{"id":103882,"date":"2023-04-11T21:20:00","date_gmt":"2023-04-11T19:20:00","guid":{"rendered":"https:\/\/www.packaging.si\/?p=103882"},"modified":"2026-10-26T10:34:52","modified_gmt":"2026-10-26T10:34:52","slug":"co-je-kapatko-v-laboratori","status":"publish","type":"post","link":"https:\/\/www.packaging.si\/cs\/what-is-a-dropper-in-a-laboratory\/","title":{"rendered":"Co je kap\u00e1tko v laborato\u0159i?"},"content":{"rendered":"<p>V laborato\u0159i je kap\u00e1tko jednoduch\u00fd n\u00e1stroj pro p\u0159enos mal\u00fdch mno\u017estv\u00ed kapaliny po jedn\u00e9 kapce. Skl\u00e1d\u00e1 se z \u00fazk\u00e9 trubi\u010dky, obvykle sklen\u011bn\u00e9 nebo plastov\u00e9, s gumov\u00fdm nebo elastomerov\u00fdm bal\u00f3nkem naho\u0159e. Stisknut\u00edm a uvoln\u011bn\u00edm bal\u00f3nku se kapalina nasaje do trubi\u010dky a pot\u00e9 se vytla\u010d\u00ed v kapk\u00e1ch. Kap\u00e1tka se pou\u017e\u00edvaj\u00ed k nekritick\u00fdm \u00fakon\u016fm, jako je p\u0159id\u00e1n\u00ed roztoku indik\u00e1toru, nanesen\u00ed kapky reagencie nebo p\u0159enos mal\u00e9ho vzorku.<\/p>\n<h2>Jak vypad\u00e1 laboratorn\u00ed kap\u00e1tko<\/h2>\n<p>Laboratorn\u00ed kap\u00e1tko, naz\u00fdvan\u00e9 tak\u00e9 Pasteurova pipeta nebo kapac\u00ed pipeta, m\u00e1 z\u00fa\u017een\u00fd hrot a \u0161ir\u0161\u00ed horn\u00ed konec, na kter\u00fd nased\u00e1 gumi\u010dka. Sklen\u011bn\u00e9 proveden\u00ed je b\u011b\u017en\u00e9, proto\u017ee sklo odol\u00e1v\u00e1 mnoha rozpou\u0161t\u011bdl\u016fm a lze je \u010distit nebo sterilizovat. Jednor\u00e1zov\u00e1 plastov\u00e1 kap\u00e1tka se \u0161iroce pou\u017e\u00edvaj\u00ed tam, kde je t\u0159eba zabr\u00e1nit k\u0159\u00ed\u017eov\u00e9 kontaminaci. N\u011bkter\u00e9 lahvi\u010dky na indik\u00e1tory a reagencie jsou rovn\u011b\u017e dod\u00e1v\u00e1ny s kap\u00e1tkem zabudovan\u00fdm v uz\u00e1v\u011bru, tak\u017ee kapalinu lze d\u00e1vkovat bez samostatn\u00e9ho n\u00e1stroje.<\/p>\n<h2>K \u010demu se laboratorn\u00ed kap\u00e1tka pou\u017e\u00edvaj\u00ed<\/h2>\n<ul>\n<li>P\u0159id\u00e1v\u00e1n\u00ed kapek indik\u00e1toru p\u0159i titraci, nap\u0159\u00edklad n\u011bkolika kapek barevn\u00e9ho indik\u00e1toru do ba\u0148ky.<\/li>\n<li>Nan\u00e1\u0161en\u00ed kapek vzorku na mikroskopick\u00e9 skl\u00ed\u010dko nebo testovac\u00ed prou\u017eek.<\/li>\n<li>P\u0159enos mal\u00e9ho mno\u017estv\u00ed kapaliny mezi zkumavkami.<\/li>\n<li>\u00daprava hladiny kapaliny k rysce p\u0159id\u00e1n\u00edm posledn\u00edch kapek.<\/li>\n<li>D\u00e1vkov\u00e1n\u00ed barviv, pufr\u016f a dal\u0161\u00edch reagenci\u00ed ve v\u00fdukov\u00fdch laborato\u0159\u00edch.<\/li>\n<\/ul>\n<h2>Jak p\u0159esn\u00e9 je kap\u00e1tko?<\/h2>\n<p>Kap\u00e1tko nen\u00ed m\u011b\u0159ic\u00ed p\u0159\u00edstroj. Velikost kapky z\u00e1vis\u00ed na kapalin\u011b, teplot\u011b, tvaru hrotu a \u00fahlu a rychlosti stisknut\u00ed bal\u00f3nku. Orienta\u010dn\u011b d\u00e1v\u00e1 mnoho vodn\u00fdch kapalin asi 20 kapek na ml, ale tato hodnota se v\u00fdrazn\u011b li\u0161\u00ed a nem\u00e1 se pou\u017e\u00edvat pro kvantitativn\u00ed pr\u00e1ci. Kdy\u017e pot\u0159ebujete definovan\u00fd objem, pou\u017eijte m\u00edsto toho odm\u011brnou pipetu, d\u011blenou pipetu, byretu nebo nastavitelnou mikropipetu.<\/p>\n<h3>Kap\u00e1tko ve srovn\u00e1n\u00ed s m\u011b\u0159ic\u00edmi pipetami<\/h3>\n<table>\n<thead>\n<tr><th>N\u00e1stroj<\/th><th>Typick\u00e9 pou\u017eit\u00ed<\/th><th>P\u0159esnost<\/th><\/tr>\n<\/thead>\n<tbody>\n<tr><td>Kap\u00e1tko<\/td><td>P\u0159id\u00e1v\u00e1n\u00ed kapek, p\u0159enos mal\u00fdch mno\u017estv\u00ed<\/td><td>Pouze p\u0159ibli\u017en\u00e1<\/td><\/tr>\n<tr><td>D\u011blen\u00e1 pipeta<\/td><td>Odm\u011b\u0159ov\u00e1n\u00ed prom\u011bnn\u00fdch objem\u016f<\/td><td>Dobr\u00e1, z\u00e1vis\u00ed na t\u0159\u00edd\u011b<\/td><\/tr>\n<tr><td>Odm\u011brn\u00e1 pipeta<\/td><td>D\u00e1vkov\u00e1n\u00ed jednoho pevn\u00e9ho objemu<\/td><td>Vysok\u00e1<\/td><\/tr>\n<tr><td>Byreta<\/td><td>Titrace s \u0159\u00edzen\u00fdm p\u0159id\u00e1v\u00e1n\u00edm<\/td><td>Vysok\u00e1<\/td><\/tr>\n<\/tbody>\n<\/table>\n<h2>Spr\u00e1vn\u00e9 pou\u017eit\u00ed kap\u00e1tka<\/h2>\n<ol>\n<li>Stiskn\u011bte bal\u00f3nek p\u0159ed pono\u0159en\u00edm hrotu do kapaliny.<\/li>\n<li>Pono\u0159te hrot a pomal\u00fdm uvol\u0148ov\u00e1n\u00edm bal\u00f3nku nasajte kapalinu nahoru.<\/li>\n<li>Dr\u017ete kap\u00e1tko svisle hrotem dol\u016f, aby kapalina netekla do bal\u00f3nku.<\/li>\n<li>Jemn\u00fdm stisknut\u00edm vypou\u0161t\u011bjte po jedn\u00e9 kapce.<\/li>\n<li>Hrot p\u0159ed pou\u017eit\u00edm s jinou kapalinou opl\u00e1chn\u011bte nebo vym\u011b\u0148te.<\/li>\n<\/ol>\n<p>Nikdy nenechte kapalinu vniknout do gumov\u00e9ho bal\u00f3nku. N\u011bkter\u00e1 rozpou\u0161t\u011bdla mohou pry\u017e nabobtnat nebo rozlo\u017eit a zbytky mohou kontaminovat dal\u0161\u00ed vzorek.<\/p>\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<h3>Je laboratorn\u00ed kap\u00e1tko tot\u00e9\u017e co pipeta?<\/h3>\n<p>Kap\u00e1tko je jednoduch\u00e1 forma pipety, ale nen\u00ed kalibrovan\u00e9. M\u011b\u0159ic\u00ed pipety jsou ozna\u010deny nebo kalibrov\u00e1ny na ur\u010dit\u00fd objem.<\/p>\n<h3>Lze kap\u00e1tko pou\u017e\u00edt opakovan\u011b?<\/h3>\n<p>Sklen\u011bn\u00e1 kap\u00e1tka lze d\u016fkladn\u011b vy\u010distit a znovu pou\u017e\u00edt. Plastov\u00e1 kap\u00e1tka b\u00fdvaj\u00ed jednor\u00e1zov\u00e1. Pro ka\u017edou reagencii pou\u017e\u00edvejte \u010dist\u00e9, abyste zabr\u00e1nili kontaminaci.<\/p>\n<h3>Pro\u010d kapalina kape z hrotu?<\/h3>\n<p>Tepl\u00fd vzduch v trubi\u010dce se roztahuje, nebo m\u00e1 kapalina n\u00edzk\u00e9 povrchov\u00e9 nap\u011bt\u00ed. Dr\u017ete kap\u00e1tko svisle a nedr\u017ete trubi\u010dku celou rukou, kter\u00e1 ji oh\u0159\u00edv\u00e1.<\/p>\n<h2>V\u00fdb\u011br kap\u00e1tek pro v\u00e1\u0161 produkt<\/h2>\n<p>Laboratorn\u00ed kap\u00e1tka a kapac\u00ed pipety pou\u017e\u00edvan\u00e9 v obalech produkt\u016f jsou bl\u00edzc\u00ed p\u0159\u00edbuzn\u00ed, ale obalov\u00e9 verze jsou p\u0159izp\u016fsobeny uz\u00e1v\u011bru lahvi\u010dky. Kombinuj\u00ed sklen\u011bnou pipetu, gumi\u010dku a uz\u00e1v\u011br se z\u00e1vitem DIN18 a slou\u017e\u00ed k d\u00e1vkov\u00e1n\u00ed kosmetiky, dopl\u0148k\u016f stravy a olej\u016f, nikoli k laboratorn\u00edmu m\u011b\u0159en\u00ed. K dispozici jsou d\u011blen\u00e9 a laserem zna\u010den\u00e9 pipety, pokud chcete viditeln\u00e9 zna\u010dky jako orienta\u010dn\u00ed pomoc p\u0159i d\u00e1vkov\u00e1n\u00ed uveden\u00e9m na etiket\u011b.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.packaging.si\/cs\/kategorie-produktu\/lahvicky-pro-kapatka-din18-gl18\/\">Kapac\u00ed lahvi\u010dky<\/a><\/li>\n<li><a href=\"https:\/\/www.packaging.si\/cs\/sestavte-si-kapatko\/\">Sestavte si sadu kap\u00e1tka<\/a><\/li>\n<li><a href=\"https:\/\/www.packaging.si\/cs\/obchod\/\">Prohl\u00e9dnout obchod<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>In a laboratory, a dropper is a simple tool for transferring small amounts of liquid one drop at a time. It is made of a narrow tube, usually glass or plastic, with a rubber or elastomer bulb at the top. Squeezing and releasing the bulb draws liquid into the tube and then expels it as&#8230;<\/p>","protected":false},"author":1,"featured_media":107589,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[216],"tags":[],"class_list":["post-103882","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-droppers-and-pipettes"],"_links":{"self":[{"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/posts\/103882","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/comments?post=103882"}],"version-history":[{"count":1,"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/posts\/103882\/revisions"}],"predecessor-version":[{"id":901974,"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/posts\/103882\/revisions\/901974"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/media\/107589"}],"wp:attachment":[{"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/media?parent=103882"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/categories?post=103882"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.packaging.si\/cs\/wp-json\/wp\/v2\/tags?post=103882"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}