{"id":295098,"date":"2026-08-30T11:29:44","date_gmt":"2026-08-30T09:29:44","guid":{"rendered":"https:\/\/drain-master.de\/2026\/08\/30\/jak-kalibrovat-ph-metr-navod-v-6-krocich\/"},"modified":"2026-08-30T11:29:44","modified_gmt":"2026-08-30T09:29:44","slug":"jak-kalibrovat-ph-metr-navod-v-6-krocich","status":"publish","type":"post","link":"https:\/\/drain-master.de\/cs\/2026\/08\/30\/jak-kalibrovat-ph-metr-navod-v-6-krocich\/","title":{"rendered":"Jak kalibrovat pH metr: N\u00e1vod v 6 kroc\u00edch"},"content":{"rendered":"<article>\n<p class=\"intro\">pH metr nen\u00ed m\u011b\u0159ic\u00ed p\u0159\u00edstroj, kter\u00fd vybal\u00edte a nav\u017edy na n\u011bj zapomenete. Je to senzor, kter\u00fd se posouv\u00e1, a kter\u00fd v\u00e1m m\u016f\u017ee m\u011bs\u00edce dod\u00e1vat fale\u0161n\u00e1 \u010d\u00edsla, ani\u017e by cokoli vypadalo po\u0161kozen\u011b.<\/p>\n<h2>Pro\u010d se pH metr v\u016fbec posouv\u00e1<\/h2>\n<p>Srdcem ka\u017ed\u00e9ho pH metru je tenk\u00e1 sklen\u011bn\u00e1 membr\u00e1na. Ta vytv\u00e1\u0159\u00ed nepatrn\u00e9 elektrick\u00e9 nap\u011bt\u00ed, kter\u00e9 p\u0159\u00edstroj p\u0159ev\u00e1d\u00ed na hodnotu pH. Pr\u00e1v\u011b tato membr\u00e1na se \u010dasem m\u011bn\u00ed: sklen\u011bn\u00fd povrch st\u00e1rne, usazuj\u00ed se na n\u011bm zbytky \u017eivn\u00e9ho roztoku a dren\u00e1\u017en\u00ed vody a elektrolyt uvnit\u0159 se spot\u0159ebov\u00e1v\u00e1.<\/p>\n<p>Zr\u00e1dn\u00e9 na tom je: Nic z toho se neprojev\u00ed. Displej st\u00e1le zobrazuje \u010dist\u00e9 \u010d\u00edslo s desetinnou \u010d\u00e1rkou. Jen\u017ee u\u017e nen\u00ed spr\u00e1vn\u00e9. Odchylky o p\u016fl pH bodu a v\u00edce jsou u neudr\u017eovan\u00fdch elektrod zcela norm\u00e1ln\u00ed, a p\u016fl bodu rozhoduje o tom, zda va\u0161e rostlina dok\u00e1\u017ee p\u0159ij\u00edmat \u017eelezo a mangan, nebo se dostane do blokace. Jak\u00e9 hodnoty byste m\u011bli v\u016fbec c\u00edlit, najdete v pr\u016fvodci <a href=\"https:\/\/drain-master.de\/cs\/2026\/04\/07\/optimalni-ph-pro-konopi-pruvodce-pro-pudu-kokos-a-hydro\/\">optim\u00e1ln\u00edm pH pro zeminu, kokos a hydro<\/a>.<\/p>\n<h2>Co pot\u0159ebujete ke kalibraci<\/h2>\n<p>Kalibrace znamen\u00e1: Uk\u00e1\u017eete p\u0159\u00edstroji dva zn\u00e1m\u00e9 body a nech\u00e1te ho znovu prolo\u017eit jeho p\u0159\u00edmku t\u011bmito body. K tomu pot\u0159ebujete pufrovac\u00ed roztoky, kapaliny se zaru\u010den\u011b stabiln\u00ed hodnotou pH.<\/p>\n<ul>\n<li><strong>pH 7,00<\/strong> nastavuje <em>nulov\u00fd bod<\/em>. Tento roztok je nezbytn\u00fd pro ka\u017edou kalibraci, bez ohledu na typ.<\/li>\n<li><strong>pH 4,01<\/strong> nastavuje <em>strmost<\/em> v kysel\u00e9 oblasti. To je pufr pro v\u0161echny, kte\u0159\u00ed m\u011b\u0159\u00ed \u017eivn\u00fd roztok, dren\u00e1\u017en\u00ed vodu nebo z\u00e1livkovou vodu.<\/li>\n<li><strong>pH 10,01<\/strong> pot\u0159ebujete pouze, pokud pravideln\u011b m\u011b\u0159\u00edte v z\u00e1sadit\u00e9 oblasti. Pro p\u011bstov\u00e1n\u00ed je zbyte\u010dn\u00fd.<\/li>\n<\/ul>\n<p>K tomu p\u0159idejte destilovanou vodu na oplachov\u00e1n\u00ed a \u010distou, nepou\u0161t\u011bj\u00edc\u00ed vl\u00e1kna ut\u011brku. Kdo m\u011b\u0159\u00ed jen ob\u010das, dob\u0159e poslou\u017e\u00ed <a href=\"https:\/\/drain-master.de\/cs\/produkt\/sada-kalibracnich-roztoku-ph-401-700-3m-kcl-roztok-elektrolytu-250-ml\/\">sada kalibra\u010dn\u00edch roztok\u016f Apera pH<\/a>, tam jsou 4,01 a 7,00 a tak\u00e9 roztok KCl pro skladov\u00e1n\u00ed v jednom balen\u00ed.<\/p>\n<div class=\"woocommerce columns-1 \"><ul class=\"products columns-1\">\n<li class=\"product type-product post-14921 status-publish first onbackorder product_cat-reseni product_cat-merici-zarizeni has-post-thumbnail sale taxable shipping-taxable purchasable product-type-woosb\">\n\t<a href=\"https:\/\/drain-master.de\/cs\/produkt\/sada-kalibracnich-roztoku-ph-401-700-3m-kcl-roztok-elektrolytu-250-ml\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><div class=\"woocommerce-image__wrapper\"><a href=\"https:\/\/drain-master.de\/cs\/produkt\/sada-kalibracnich-roztoku-ph-401-700-3m-kcl-roztok-elektrolytu-250-ml\/\" title=\"Sada kalibra\u010dn\u00edho roztoku Apera pH\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\n\t\n\t<div class=\"shoptimizer-plp-carousel-container\"><div class=\"shoptimizer-plp-image-wrapper\"><img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/drain-master.de\/wp-content\/uploads\/2023\/09\/ph4ph73m-kcl-solution-set-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sada kalibra\u010dn\u00edho roztoku pH 4,01\/7,00 + roztok elektrolytu 3M KCl 250 ml\" srcset=\"https:\/\/drain-master.de\/wp-content\/uploads\/2023\/09\/ph4ph73m-kcl-solution-set-300x300.jpg 300w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/09\/ph4ph73m-kcl-solution-set-150x150.jpg 150w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/09\/ph4ph73m-kcl-solution-set-800x800.jpg 800w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/09\/ph4ph73m-kcl-solution-set-600x600.jpg 600w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/09\/ph4ph73m-kcl-solution-set-768x768.jpg 768w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/09\/ph4ph73m-kcl-solution-set.jpg 1000w\" sizes=\"(max-width: 360px) 147px, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\n\t<\/div><\/div><\/a><\/div><div class=\"woocommerce-card__header\">\t\t\t\t\t\t<p class=\"product__categories\"><a href=\"https:\/\/drain-master.de\/cs\/produkt-kategorie\/merici-zarizeni\/reseni\/\" rel=\"tag\">Kalibra\u010dn\u00ed roztoky<\/a>, <a href=\"https:\/\/drain-master.de\/cs\/produkt-kategorie\/merici-zarizeni\/\" rel=\"tag\">pH a EC metry<\/a><\/p>\t\t\t\t<div class=\"woocommerce-loop-product__title\"><a tabindex=\"0\" href=\"https:\/\/drain-master.de\/cs\/produkt\/sada-kalibracnich-roztoku-ph-401-700-3m-kcl-roztok-elektrolytu-250-ml\/\" aria-label=\"Sada kalibra\u010dn\u00edho roztoku Apera pH\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">Sada kalibra\u010dn\u00edho roztoku Apera pH<\/a><\/div><\/a><p class=\"price\"><del aria-hidden=\"true\"><span class=\"woocommerce-Price-amount amount\"><bdi>37,10&nbsp;<span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&euro;<\/span><\/bdi><\/span><\/del> <span class=\"screen-reader-text\">P\u016fvodn\u00ed cena byla: 37,10&nbsp;&euro;.<\/span><ins aria-hidden=\"true\"><span class=\"woocommerce-Price-amount amount\"><bdi>33,40&nbsp;<span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&euro;<\/span><\/bdi><\/span><\/ins><span class=\"screen-reader-text\">Aktu\u00e1ln\u00ed cena je: 33,40&nbsp;&euro;.<\/span><\/p><\/a><a href=\"\/cs\/wp-json\/wp\/v2\/posts\/295098?add-to-cart=14921\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_14921\" data-quantity=\"1\" class=\"button product_type_woosb add_to_cart_button ajax_add_to_cart\" data-product_id=\"14921\" data-product_sku=\"28APE190310\" aria-label=\"Zjistit v\u00edce o &bdquo;Sada kalibra\u010dn\u00edho roztoku Apera pH&ldquo;\" rel=\"nofollow\" role=\"button\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_14921\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t<input type=\"hidden\" class=\"pmwProductId\" data-id=\"14921\">\n\t\t\t\t\t<script data-cfasync=\"false\">\n\t\t\t(window.pmwDataLayer = window.pmwDataLayer || {}).products                = window.pmwDataLayer.products || {};\n\t\t\twindow.pmwDataLayer.products[14921] = {\"id\":\"14921\",\"sku\":\"28APE190310\",\"price\":33.4,\"brand\":\"\",\"quantity\":1,\"dyn_r_ids\":{\"post_id\":\"14921\",\"sku\":\"28APE190310\",\"gpf\":\"woocommerce_gpf_14921\",\"gla\":\"gla_14921\",\"dm_de_post_id\":\"14773\"},\"is_variable\":false,\"type\":\"woosb\",\"name\":\"Sada kalibra\u010dn\u00edho roztoku Apera pH\",\"category\":[\"Kalibra\u010dn\u00ed roztoky\",\"pH a EC metry\"],\"is_variation\":false};\n\t\t\t\t\twindow.pmw_product_position = window.pmw_product_position || 1;\n\t\twindow.pmwDataLayer.products[14921]['position'] = window.pmw_product_position++;\n\t\t\t\t<\/script>\n\t\t<\/div><\/li>\n<\/ul>\n<\/div>\n<h2>Jedno-, dvou- nebo t\u0159\u00edbodov\u00e1 kalibrace?<\/h2>\n<table>\n<thead>\n<tr>\n<th>Postup<\/th>\n<th>Co koriguje<\/th>\n<th>Kdy je smyslupln\u00e1<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Jednobodov\u00e1<\/strong> (pouze 7,00)<\/td>\n<td>pouze nulov\u00fd bod<\/td>\n<td>Rychl\u00e1 kontrola mezi m\u011b\u0159en\u00edmi, pokud od posledn\u00ed pln\u00e9 kalibrace uplynulo jen n\u011bkolik dn\u00ed<\/td>\n<\/tr>\n<tr>\n<td><strong>Dvoubodov\u00e1<\/strong> (7,00 + 4,01)<\/td>\n<td>nulov\u00fd bod a strmost<\/td>\n<td>standard pro p\u011bstov\u00e1n\u00ed, akvaristiku a jez\u00edrka, sem pat\u0159\u00edte<\/td>\n<\/tr>\n<tr>\n<td><strong>T\u0159\u00edbodov\u00e1<\/strong> (+ 10,01)<\/td>\n<td>nulov\u00fd bod a strmost v cel\u00e9m rozsahu<\/td>\n<td>laborato\u0159, pokud m\u011b\u0159\u00edte jak kysel\u00e9, tak z\u00e1sadit\u00e9 roztoky<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Pro p\u011bstov\u00e1n\u00ed je dvoubodov\u00e1 kalibrace spr\u00e1vnou cestou. Bude v\u00e1s st\u00e1t dv\u011b minuty a je rozd\u00edlem mezi m\u011b\u0159en\u00edm a odhadem.<\/p>\n<h2>Kalibrace v 6 kroc\u00edch<\/h2>\n<ol>\n<li><strong>P\u0159elijte \u010derstv\u00e9 pufry.<\/strong> Nalijte mal\u00e9 mno\u017estv\u00ed pH 7,00 a pH 4,01 do dvou \u010dist\u00fdch k\u00e1dinek. Nikdy nekalibrujte p\u0159\u00edmo v z\u00e1sobn\u00ed l\u00e1hvi a nikdy nelijte pou\u017eit\u00fd pufr zp\u011bt, jedin\u00e1 kapka zp\u011btn\u00e9ho toku zkaz\u00ed celou l\u00e1hev.<\/li>\n<li><strong>Opl\u00e1chn\u011bte elektrodu.<\/strong> Opl\u00e1chn\u011bte destilovanou vodou, pot\u00e9 opatrn\u011b osu\u0161te. Net\u0159ete: Sklen\u011bn\u00e1 membr\u00e1na se po\u0161kr\u00e1be a staticky nabije, co\u017e zp\u016fsob\u00ed, \u017ee nam\u011b\u0159en\u00e1 hodnota bude minuty kol\u00edsat.<\/li>\n<li><strong>Za\u010dn\u011bte s pH 7,00.<\/strong> Pono\u0159te elektrodu, dokud nebude membr\u00e1na, mal\u00fd sv\u011btl\u00fd krou\u017eek na stonku, zcela zakryta. Kr\u00e1tce zam\u00edchejte, pot\u00e9 dr\u017ete v klidu a po\u010dkejte, dokud se hodnota neust\u00e1l\u00ed. Spus\u0165te kalibra\u010dn\u00ed re\u017eim a potvr\u010fte.<\/li>\n<li><strong>Mezit\u00edm znovu opl\u00e1chn\u011bte.<\/strong> Op\u011bt destilovan\u00e1 voda, op\u011bt osu\u0161te. Kdo tento krok p\u0159esko\u010d\u00ed, p\u0159enese pufr 7 do pufru 4, a kalibruje p\u0159\u00edstroj na hodnotu, kterou u\u017e nikdy neuvid\u00ed.<\/li>\n<li><strong>Opakujte s pH 4,01.<\/strong> Stejn\u00fd postup, stejn\u00e1 trp\u011blivost. Potvr\u010fte a\u017e tehdy, kdy\u017e je zobrazen\u00ed stabiln\u00ed po n\u011bkolik sekund.<\/li>\n<li><strong>Dokon\u010dete a zkontrolujte.<\/strong> Ulo\u017ete kalibraci, opl\u00e1chn\u011bte elektrodu a znovu ji pono\u0159te do pufru 7. Pokud p\u0159\u00edstroj nyn\u00ed ukazuje 7,0 (nebo 7,00), v\u0161e fungovalo. Pokud se odchyluje, byl pufr star\u00fd nebo elektroda pot\u0159ebuje \u00fadr\u017ebu.<\/li>\n<\/ol>\n<h3>Nezapome\u0148te na teplotu<\/h3>\n<p>Pufrovac\u00ed roztoky maj\u00ed svou ud\u00e1vanou hodnotu p\u0159i 25 \u00b0C. Pokud l\u00e1hev stoj\u00ed ve studen\u00e9m sklep\u011b a vzorek v tepl\u00e9m stanu, m\u011b\u0159\u00edte dva r\u016fzn\u00e9 sv\u011bty. V\u0161echna za\u0159\u00edzen\u00ed Apera \u0159ady 20 a 60 maj\u00ed automatickou teplotn\u00ed kompenzaci, kter\u00e1 to matematicky vyrovn\u00e1v\u00e1. P\u0159esto plat\u00ed: Pufr a vzorek by m\u011bly m\u00edt p\u0159ibli\u017en\u011b stejnou teplotu, ne\u017e za\u010dnete kalibrovat.<\/p>\n<h2>Jak \u010dasto mus\u00edte kalibrovat?<\/h2>\n<p>Neexistuje pevn\u00e9 \u010d\u00edslo, ale u\u017eite\u010dn\u00e9 pravidlo:<\/p>\n<ul>\n<li><strong>Denn\u00ed pou\u017eit\u00ed:<\/strong> jednou t\u00fddn\u011b pln\u011b kalibrovat, k tomu kr\u00e1tk\u00e1 kontrola v pufru 7 p\u0159ed pracovn\u00edm dnem.<\/li>\n<li><strong>M\u011b\u0159en\u00ed jednou a\u017e dvakr\u00e1t t\u00fddn\u011b:<\/strong> ka\u017ed\u00e9 dva a\u017e \u010dty\u0159i t\u00fddny.<\/li>\n<li><strong>V\u017edy okam\u017eit\u011b:<\/strong> po del\u0161\u00ed dob\u011b nepou\u017e\u00edv\u00e1n\u00ed, po v\u00fdm\u011bn\u011b elektrody, po m\u011b\u0159en\u00ed ve vysoce zat\u00ed\u017een\u00fdch vzorc\u00edch a v\u017edy, kdy\u017e v\u00e1s hodnota p\u0159ekvap\u00ed.<\/li>\n<\/ul>\n<p>Posledn\u00ed bod je nejd\u016fle\u017eit\u011bj\u0161\u00ed. Pokud va\u0161e dren\u00e1\u017en\u00ed voda najednou ukazuje hodnotu, kter\u00e1 neodpov\u00edd\u00e1 va\u0161emu substr\u00e1tu, prvn\u00ed ot\u00e1zka nikdy nezn\u00ed \u201eCo d\u011bl\u00e1 moje rostlina?&#8220;, ale \u201eKdy jsem naposledy kalibroval?&#8220;. Teprve pot\u00e9 m\u00e1 smysl hledat p\u0159\u00ed\u010diny, nap\u0159\u00edklad v na\u0161em \u010dl\u00e1nku o tom, co d\u011blat, kdy\u017e je <a href=\"https:\/\/drain-master.de\/cs\/2026\/04\/07\/nizke-ph-odtoku-priciny-reseni-pro-konopi\/\">pH dren\u00e1\u017ee p\u0159\u00edli\u0161 n\u00edzk\u00e9<\/a>.<\/p>\n<h2>P\u011bt nej\u010dast\u011bj\u0161\u00edch chyb<\/h2>\n<ul>\n<li><strong>\u2705 Star\u00fd pufrovac\u00ed roztok.<\/strong> Otev\u0159en\u00e9 l\u00e1hve absorbuj\u00ed CO\u2082 ze vzduchu, co\u017e sni\u017euje hodnotu. Zvl\u00e1\u0161t\u011b pufry 7 a 10 st\u00e1rnou rychle. Napi\u0161te datum na l\u00e1hev, vym\u011b\u0148te ji asi po p\u016fl roce, nebo d\u0159\u00edve, pokud se objev\u00ed z\u00e1kal nebo vlo\u010dky.<\/li>\n<li><strong>\u2705 Neoplachov\u00e1no.<\/strong> Nej\u010dast\u011bj\u0161\u00ed chyba v\u016fbec a ta s nejv\u011bt\u0161\u00edm dopadem. Oplachujte mezi ka\u017ed\u00fdm krokem, nejen na za\u010d\u00e1tku.<\/li>\n<li><strong>\u2705 Potvrzeno p\u0159\u00edli\u0161 brzy.<\/strong> Zest\u00e1rl\u00e1 elektroda pot\u0159ebuje a\u017e minutu, ne\u017e se hodnota skute\u010dn\u011b ust\u00e1l\u00ed. Kdo stiskne \u201eOK&#8220; po p\u011bti sekund\u00e1ch, kalibruje na mezistav.<\/li>\n<li><strong>\u2705 Voda z kohoutku k oplachov\u00e1n\u00ed.<\/strong> Voda z kohoutku obsahuje rozpu\u0161t\u011bn\u00e9 soli a m\u00e1 vlastn\u00ed hodnotu pH. P\u0159en\u00e1\u0161\u00ed p\u0159esn\u011b to, co jste cht\u011bli opl\u00e1chnout. Destilovan\u00e1 nebo demineralizovan\u00e1 voda je povinn\u00e1.<\/li>\n<li><strong>\u2705 Such\u00e1 elektroda.<\/strong> Vysu\u0161en\u00e1 sklen\u011bn\u00e1 membr\u00e1na se \u010dasto u\u017e ned\u00e1 \u010dist\u011b kalibrovat. Jak tomu p\u0159edej\u00edt, se dozv\u00edte v na\u0161em \u010dl\u00e1nku o <a href=\"https:\/\/drain-master.de\/cs\/2026\/08\/30\/skladovani-a-pece-o-ph-elektrodu-5-nejdrazsich-chyb\/\">spr\u00e1vn\u00e9m skladov\u00e1n\u00ed a \u00fadr\u017eb\u011b pH elektrody<\/a>.<\/li>\n<\/ul>\n<h2>Kdy\u017e se kalibrace neda\u0159\u00ed<\/h2>\n<p>Pokud v\u00e1\u0161 p\u0159\u00edstroj odm\u00edt\u00e1 kalibraci nebo hodnota po ka\u017ed\u00e9m pokusu sk\u00e1\u010de jinam, t\u00e9m\u011b\u0159 nikdy to nen\u00ed chyba p\u0159\u00edstroje, ale elektrody. U model\u016f s pevn\u011b zabudovanou elektrodou, jako je <a href=\"https:\/\/drain-master.de\/cs\/produkt\/ph20-value-ph-pocket-meter\/\">kapesn\u00ed pH metr Apera PH20 Value<\/a>, to nakonec znamen\u00e1 nov\u00fd p\u0159\u00edstroj. U \u0159ady 60 je elektroda spot\u0159ebn\u00ed d\u00edl, kter\u00fd si sami vym\u011bn\u00edte b\u011bhem n\u011bkolika minut, <a href=\"https:\/\/drain-master.de\/cs\/produkt\/nahradni-ph-elektroda-apera-pro-ph60-ph60-e\/\">n\u00e1hradn\u00ed pH elektroda Apera pro PH60 (PH60-E)<\/a> stoj\u00ed zlomek ceny nov\u00e9ho m\u011b\u0159ic\u00edho p\u0159\u00edstroje.<\/p>\n<p>P\u0159esn\u011b to je jeden z d\u016fvod\u016f, pro\u010d se p\u0159\u00edplatek za pr\u00e9miovou t\u0159\u00eddu vyplat\u00ed pro ty, kdo m\u011b\u0159\u00ed \u010dasto. Kter\u00fd p\u0159\u00edstroj je pro v\u00e1s vhodn\u00fd, jsme propo\u010d\u00edtali v <a href=\"https:\/\/drain-master.de\/cs\/2026\/08\/30\/apera-ph20-nebo-ph60-uprimne-srovnani\/\">srovn\u00e1n\u00ed PH20 a PH60<\/a>.<\/p>\n<div class=\"woocommerce columns-1 \"><ul class=\"products columns-1\">\n<li class=\"product type-product post-90005 status-publish first onbackorder product_cat-hodnota-ph product_cat-merici-zarizeni has-post-thumbnail sale taxable shipping-taxable purchasable product-type-simple\">\n\t<a href=\"https:\/\/drain-master.de\/cs\/produkt\/kapesni-ph-metr-apera-ph60-premium\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><div class=\"woocommerce-image__wrapper\"><a href=\"https:\/\/drain-master.de\/cs\/produkt\/kapesni-ph-metr-apera-ph60-premium\/\" title=\"Kapesn\u00ed pH metr Apera PH60 Premium\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\n\t\n\t<div class=\"shoptimizer-plp-carousel-container\"><div class=\"shoptimizer-plp-image-wrapper\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kapesn\u00ed pH metr Apera PH60 Premium\" srcset=\"https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-300x300.jpg 300w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-600x600.jpg 600w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-768x768.jpg 768w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-990x990.jpg 990w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-441x441.jpg 441w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-100x100.jpg 100w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-800x800.jpg 800w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60-150x150.jpg 150w, https:\/\/drain-master.de\/wp-content\/uploads\/2024\/10\/PH60.jpg 1000w\" sizes=\"(max-width: 360px) 147px, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\n\t<\/div><\/div><\/a><\/div><div class=\"woocommerce-card__header\">\t\t\t\t\t\t<p class=\"product__categories\"><a href=\"https:\/\/drain-master.de\/cs\/produkt-kategorie\/merici-zarizeni\/hodnota-ph\/\" rel=\"tag\">pH metry<\/a>, <a href=\"https:\/\/drain-master.de\/cs\/produkt-kategorie\/merici-zarizeni\/\" rel=\"tag\">pH a EC metry<\/a><\/p>\t\t\t\t<div class=\"woocommerce-loop-product__title\"><a tabindex=\"0\" href=\"https:\/\/drain-master.de\/cs\/produkt\/kapesni-ph-metr-apera-ph60-premium\/\" aria-label=\"Kapesn\u00ed pH metr Apera PH60 Premium\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">Kapesn\u00ed pH metr Apera PH60 Premium<\/a><\/div><\/a><p class=\"price\"><del aria-hidden=\"true\"><span class=\"woocommerce-Price-amount amount\"><bdi>124,95&nbsp;<span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&euro;<\/span><\/bdi><\/span><\/del> <span class=\"screen-reader-text\">P\u016fvodn\u00ed cena byla: 124,95&nbsp;&euro;.<\/span><ins aria-hidden=\"true\"><span class=\"woocommerce-Price-amount amount\"><bdi>112,95&nbsp;<span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&euro;<\/span><\/bdi><\/span><\/ins><span class=\"screen-reader-text\">Aktu\u00e1ln\u00ed cena je: 112,95&nbsp;&euro;.<\/span><\/p><\/a><a href=\"\/cs\/wp-json\/wp\/v2\/posts\/295098?add-to-cart=90005\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_90005\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"90005\" data-product_sku=\"28APE190022\" aria-label=\"P\u0159idat do ko\u0161\u00edku: &ldquo;Kapesn\u00ed pH metr Apera PH60 Premium&rdquo;\" rel=\"nofollow\" data-success_message=\"&ldquo;Kapesn\u00ed pH metr Apera PH60 Premium&rdquo; byl p\u0159id\u00e1n do ko\u0161\u00edku\" role=\"button\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_90005\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t<input type=\"hidden\" class=\"pmwProductId\" data-id=\"90005\">\n\t\t\t\t\t<script data-cfasync=\"false\">\n\t\t\t(window.pmwDataLayer = window.pmwDataLayer || {}).products                = window.pmwDataLayer.products || {};\n\t\t\twindow.pmwDataLayer.products[90005] = {\"id\":\"90005\",\"sku\":\"28APE190022\",\"price\":112.95,\"brand\":\"\",\"quantity\":1,\"dyn_r_ids\":{\"post_id\":\"90005\",\"sku\":\"28APE190022\",\"gpf\":\"woocommerce_gpf_90005\",\"gla\":\"gla_90005\",\"dm_de_post_id\":\"89361\"},\"is_variable\":false,\"type\":\"simple\",\"name\":\"Kapesn\u00ed pH metr Apera PH60 Premium\",\"category\":[\"pH metry\",\"pH a EC metry\"],\"is_variation\":false};\n\t\t\t\t\twindow.pmw_product_position = window.pmw_product_position || 1;\n\t\twindow.pmwDataLayer.products[90005]['position'] = window.pmw_product_position++;\n\t\t\t\t<\/script>\n\t\t<\/div><\/li>\n<\/ul>\n<\/div>\n<h2>Samotn\u00e1 kalibrace nesta\u010d\u00ed<\/h2>\n<p>Perfektn\u011b kalibrovan\u00fd p\u0159\u00edstroj p\u0159esto dod\u00e1 nesmysly, pokud vzorek nen\u00ed vhodn\u00fd. Kdo m\u011b\u0159\u00ed pH z podmisky, ve kter\u00e9 st\u00e1la voda a odpa\u0159ila se, m\u011b\u0159\u00ed koncentrovan\u00e9 soli a usazeniny z minul\u00e9ho t\u00fddne, nikoli stav ko\u0159enov\u00e9 z\u00f3ny.<\/p>\n<p>Spolehliv\u00fd vzorek je \u010derstv\u00fd, poch\u00e1z\u00ed p\u0159\u00edmo z kv\u011btin\u00e1\u010de a nep\u0159i\u0161el do styku s ni\u010d\u00edm jin\u00fdm. P\u0159esn\u011b pro to je DrainMaster navr\u017een: Zachyt\u00ed dren\u00e1\u017en\u00ed vodu \u010dist\u011b, tak\u017ee ji m\u016f\u017eete odebrat, ani\u017e byste museli zvedat t\u011b\u017ek\u00e9 kv\u011btin\u00e1\u010de. Jak to vypad\u00e1 v praxi, ukazuje \u010dl\u00e1nek <a href=\"https:\/\/drain-master.de\/cs\/2023\/04\/27\/mereni-bez-stresu-hodnoty-ph-a-ec-bez-zvedani-kvetinace\/\">M\u011b\u0159en\u00ed pH a EC hodnot, ani\u017e byste zvedali kv\u011btin\u00e1\u010d<\/a>.<\/p>\n<div class=\"woocommerce columns-1 \"><ul class=\"products columns-1\">\n<li class=\"product type-product post-7400 status-publish first instock product_cat-podlozka product_cat-zahradni-potreby has-post-thumbnail taxable shipping-taxable purchasable product-type-simple\">\n\t<a href=\"https:\/\/drain-master.de\/cs\/produkt\/stojan-na-odkapavani-drainmaster\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><div class=\"woocommerce-image__wrapper\"><a href=\"https:\/\/drain-master.de\/cs\/produkt\/stojan-na-odkapavani-drainmaster\/\" title=\"DrainMaster v\u010d. z\u00e1chytn\u00e9 vany (konfigurovateln\u00e1 velikost sady)\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><div class=\"shoptimizer-plp-carousel-container\"><div class=\"shoptimizer-plp-image-wrapper\"><img decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"DrainMaster Jednotliv\u00e1 sada\" srcset=\"https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-300x300.jpg 300w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-1019x1024.jpg 1019w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-768x771.jpg 768w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-1529x1536.jpg 1529w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-990x994.jpg 990w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-441x443.jpg 441w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-100x100.jpg 100w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2-150x151.jpg 150w, https:\/\/drain-master.de\/wp-content\/uploads\/2023\/04\/DrainMaster-Set_2.jpg 1991w\" sizes=\"(max-width: 360px) 147px, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\n\t<\/div><\/div><\/a><\/div><div class=\"woocommerce-card__header\">\t\t\t\t\t\t<p class=\"product__categories\"><a href=\"https:\/\/drain-master.de\/cs\/produkt-kategorie\/zahradni-potreby\/podlozka\/\" rel=\"tag\">Podmisky pod kv\u011btin\u00e1\u010de<\/a>, <a href=\"https:\/\/drain-master.de\/cs\/produkt-kategorie\/zahradni-potreby\/\" rel=\"tag\">P\u011bstitelsk\u00e9 p\u0159\u00edslu\u0161enstv\u00ed<\/a><\/p>\t\t\t\t<div class=\"woocommerce-loop-product__title\"><a tabindex=\"0\" href=\"https:\/\/drain-master.de\/cs\/produkt\/stojan-na-odkapavani-drainmaster\/\" aria-label=\"DrainMaster v\u010d. z\u00e1chytn\u00e9 vany (konfigurovateln\u00e1 velikost sady)\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">DrainMaster v\u010d. z\u00e1chytn\u00e9 vany (konfigurovateln\u00e1 velikost sady)<\/a><\/div><\/a><p class=\"price\"><span class=\"woocommerce-Price-amount amount\"><bdi>21,99&nbsp;<span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&euro;<\/span><\/bdi><\/span><\/p><\/a><a href=\"\/cs\/wp-json\/wp\/v2\/posts\/295098?add-to-cart=7400\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_7400\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"7400\" data-product_sku=\"DM-01\" aria-label=\"P\u0159idat do ko\u0161\u00edku: &ldquo;DrainMaster v\u010d. z\u00e1chytn\u00e9 vany (konfigurovateln\u00e1 velikost sady)&rdquo;\" rel=\"nofollow\" data-success_message=\"&ldquo;DrainMaster v\u010d. z\u00e1chytn\u00e9 vany (konfigurovateln\u00e1 velikost sady)&rdquo; byl p\u0159id\u00e1n do ko\u0161\u00edku\" role=\"button\">P\u0159idat do ko\u0161\u00edku<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_7400\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t<input type=\"hidden\" class=\"pmwProductId\" data-id=\"7400\">\n\t\t\t\t\t<script data-cfasync=\"false\">\n\t\t\t(window.pmwDataLayer = window.pmwDataLayer || {}).products                = window.pmwDataLayer.products || {};\n\t\t\twindow.pmwDataLayer.products[7400] = {\"id\":\"7400\",\"sku\":\"DM-01\",\"price\":21.99,\"brand\":\"\",\"quantity\":1,\"dyn_r_ids\":{\"post_id\":\"7400\",\"sku\":\"DM-01\",\"gpf\":\"woocommerce_gpf_7400\",\"gla\":\"gla_7400\",\"dm_de_post_id\":\"1813\"},\"is_variable\":false,\"type\":\"simple\",\"name\":\"DrainMaster v\u010d. z\u00e1chytn\u00e9 vany (konfigurovateln\u00e1 velikost sady)\",\"category\":[\"Podmisky pod kv\u011btin\u00e1\u010de\",\"P\u011bstitelsk\u00e9 p\u0159\u00edslu\u0161enstv\u00ed\"],\"is_variation\":false};\n\t\t\t\t\twindow.pmw_product_position = window.pmw_product_position || 1;\n\t\twindow.pmwDataLayer.products[7400]['position'] = window.pmw_product_position++;\n\t\t\t\t<\/script>\n\t\t<\/div><\/li>\n<\/ul>\n<\/div>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Mohu si pufrovac\u00ed roztok p\u0159ipravit s\u00e1m?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">Technicky ano, prakticky ne. Pufrovac\u00ed roztok mus\u00ed udr\u017eet svou hodnotu pH s p\u0159esnost\u00ed na dv\u011b desetinn\u00e1 m\u00edsta a zachovat ji i p\u0159i teplotn\u00edch v\u00fdkyvech. To doma nedos\u00e1hnete ani citronovou \u0161\u0165\u00e1vou, ani octem. Hotov\u00e9 roztoky jsou dohledateln\u00e9 k norm\u00e1l\u016fm, levn\u00e9 a dlouho trvanliv\u00e9, \u0161et\u0159it zde je nejdra\u017e\u0161\u00ed cesta k chybn\u00fdm nam\u011b\u0159en\u00fdm hodnot\u00e1m.<\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Sta\u010d\u00ed jednobodov\u00e1 kalibrace s pH 7?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">Pouze jako mezikontrola. Pufr 7 koriguje nulov\u00fd bod, tedy posun cel\u00e9 m\u011b\u0159ic\u00ed p\u0159\u00edmky. Strmost, jak siln\u011b p\u0159\u00edstroj reaguje na zm\u011bnu pH, z\u016fst\u00e1v\u00e1 nedot\u010dena. P\u0159esn\u011b ta se v\u0161ak m\u011bn\u00ed se st\u00e1rnut\u00edm elektrody. Kdo m\u011b\u0159\u00ed v kysel\u00e9 oblasti, pot\u0159ebuje proto pufr 4,01.<\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Jak dlouho vydr\u017e\u00ed otev\u0159en\u00fd pufrovac\u00ed roztok?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">Orienta\u010dn\u011b asi p\u016fl roku po prvn\u00edm otev\u0159en\u00ed, pokud je l\u00e1hev skladov\u00e1na v chladu, temnu a t\u011bsn\u011b uzav\u0159en\u00e1. Pufry 7,00 a 10,01 st\u00e1rnou rychleji ne\u017e 4,01, proto\u017ee absorbuj\u00ed CO\u2082 ze vzduchu. Z\u00e1kal, vlo\u010dky nebo usazeniny jsou jist\u00fdm znamen\u00edm k vylit\u00ed, zakalen\u00fd pufrovac\u00ed roztok spolehliv\u011b zkalibruje v\u00e1\u0161 p\u0159\u00edstroj \u0161patn\u011b.<\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Co znamen\u00e1 strmost nebo hodnota slope?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">Strmost popisuje, jak siln\u011b nap\u011bt\u00ed elektrody reaguje na zm\u011bnu o jednu jednotku pH. Zdrav\u00e1 elektroda se pohybuje p\u0159ibli\u017en\u011b mezi 95 a 103 procenty teoretick\u00e9 hodnoty. Pokud klesne v\u00fdrazn\u011b pod tuto hranici, m\u011b\u0159en\u00ed se stane pomal\u00fdm a nep\u0159esn\u00fdm, to je okam\u017eik, kdy je t\u0159eba prov\u00e9st \u010di\u0161t\u011bn\u00ed nebo elektroda dos\u00e1hla konce sv\u00e9 \u017eivotnosti.<\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Mus\u00edm po ka\u017ed\u00e9 v\u00fdm\u011bn\u011b elektrody znovu kalibrovat?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">Ano, bez v\u00fdjimky. Kalibra\u010dn\u00ed data v p\u0159\u00edstroji popisuj\u00ed starou elektrodu, nikoli novou. Nechte \u010derstvou elektrodu p\u0159ed prvn\u00ed kalibrac\u00ed n\u011bkolik hodin kondicionovat v roztoku KCl pro skladov\u00e1n\u00ed, pot\u00e9 kalibrujte ve dvou bodech. Bez tohoto kroku m\u011b\u0159\u00edte s nov\u00fdm senzorem a charakteristikami star\u00e9ho.<\/p>\n<\/details>\n<details style=\"border: 1px solid #e5e7eb; border-radius: 8px; margin-bottom: 8px; overflow: hidden;\">\n<summary style=\"padding: 14px 18px; cursor: pointer; font-weight: 600; font-size: 1.05em; background: #fafafa; list-style: none;\">Pro\u010d se moje hodnota odchyluje i p\u0159es \u010derstvou kalibraci?<\/summary>\n<p style=\"padding: 14px 18px; margin: 0; color: #555; line-height: 1.6; border-top: 1px solid #e5e7eb;\">Pak je to v\u011bt\u0161inou chyba vzorku, nikoli p\u0159\u00edstroje. Voda, kter\u00e1 st\u00e1la v podmisce, je koncentrovan\u00e1 odpa\u0159ov\u00e1n\u00edm a sm\u00edchan\u00e1 se star\u00fdmi zbytky hnojiv. Tak\u00e9 p\u0159\u00edli\u0161 mal\u00e9 mno\u017estv\u00ed vzorku, ve kter\u00e9m se membr\u00e1na zcela nepono\u0159\u00ed, poskytuje nepou\u017eiteln\u00e9 hodnoty. Zm\u011b\u0159te \u010derstv\u00fd vzorek p\u0159\u00edmo z kv\u011btin\u00e1\u010de, pak je hodnota zpravidla spr\u00e1vn\u00e1.<\/p>\n<\/details>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>pH metr m\u011b\u0159\u00ed jen tak p\u0159esn\u011b, jak p\u0159esn\u00e1 byla jeho posledn\u00ed kalibrace. Tento n\u00e1vod ukazuje dvoubodovou kalibraci krok za krokem \u2013 a chyby, kter\u00fdch se dopou\u0161t\u011bj\u00ed i zku\u0161en\u00ed p\u011bstitel\u00e9.<\/p>\n","protected":false},"author":1,"featured_media":295371,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"Jak kalibrovat pH metr: N\u00e1vod v 6 kroc\u00edch","rank_math_description":"Kalibrace pH metru snadno: Dvoubodov\u00e1 kalibrace krok za krokem, spr\u00e1vn\u00e9 pufrovac\u00ed roztoky, interpretace strmosti a jak se vyhnout 5 nej\u010dast\u011bj\u0161\u00edm chyb\u00e1m.","rank_math_focus_keyword":"Kalibrace pH metru","footnotes":""},"categories":[487],"tags":[],"class_list":["post-295098","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-cs"],"_links":{"self":[{"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/posts\/295098","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/comments?post=295098"}],"version-history":[{"count":0,"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/posts\/295098\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/media\/295371"}],"wp:attachment":[{"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/media?parent=295098"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/categories?post=295098"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/drain-master.de\/cs\/wp-json\/wp\/v2\/tags?post=295098"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}