{"id":105878,"date":"2023-04-15T11:38:15","date_gmt":"2023-04-15T09:38:15","guid":{"rendered":"https:\/\/www.packaging.si\/what-is-the-difference-between-a-volumetric-pipette-and-a-volumetric-flask\/"},"modified":"2026-10-26T10:35:24","modified_gmt":"2026-10-26T10:35:24","slug":"aky-je-rozdiel-medzi-odmernou-pipetou-a-odmernou-bankou","status":"publish","type":"post","link":"https:\/\/www.packaging.si\/sk\/what-is-the-difference-between-a-volumetric-pipette-and-a-volumetric-flask\/","title":{"rendered":"Ak\u00fd je rozdiel medzi odmernou pipetou a odmernou bankou?"},"content":{"rendered":"<p>Odmern\u00e1 pipeta d\u00e1vkuje jeden pevn\u00fd objem kvapaliny, zatia\u013e \u010do odmern\u00e1 banka obsahuje jeden pevn\u00fd objem a pou\u017e\u00edva sa na pr\u00edpravu roztokov s presn\u00fdm kone\u010dn\u00fdm objemom. Pipeta je kalibrovan\u00e1 na vylievanie (TD) a banka je kalibrovan\u00e1 na obsah (TC). Pri pr\u00edprave rieden\u00ed sa \u010dasto pou\u017e\u00edvaj\u00fa spolu.<\/p>\n\n<h2>\u010co rob\u00ed ka\u017ed\u00e1 \u010das\u0165 laborat\u00f3rneho skla<\/h2>\n<p>Odmern\u00e1 pipeta m\u00e1 dlh\u00fa tenk\u00fa stopku, stredn\u00fa gu\u013eu a jednu deliacu zna\u010dku nad gu\u013eou. Napln\u00edte ju tesne nad zna\u010dku, nastav\u00edte menisk na \u010diaru a nech\u00e1te kvapalinu vo\u013ene vytiec\u0165 do inej n\u00e1doby. Hrot sa na nieko\u013eko sek\u00fand prilo\u017e\u00ed na vn\u00fatorn\u00fa stenu a mal\u00e9 mno\u017estvo zost\u00e1vaj\u00face v hrote sa nevyfukuje.<\/p>\n<p>Odmern\u00e1 banka m\u00e1 ploch\u00fa z\u00e1klad\u0148u, \u0161irok\u00e9 hru\u0161kovit\u00e9 telo a dlh\u00e9 \u00fazke hrdlo s jednou kruhovou zna\u010dkou. Prid\u00e1te rozpusten\u00fa l\u00e1tku a trochu rozp\u00fa\u0161\u0165adla, rozpust\u00edte ju a potom opatrne dopln\u00edte, k\u00fdm menisk nesed\u00ed na kruhovej zna\u010dke. Z\u00e1tka umo\u017e\u0148uje prevr\u00e1ten\u00edm d\u00f4kladne premie\u0161a\u0165 obsah.<\/p>\n\n<h2>K\u013e\u00fa\u010dov\u00e9 rozdiely<\/h2>\n<table>\n<thead><tr><th>Vlastnos\u0165<\/th><th>Odmern\u00e1 pipeta<\/th><th>Odmern\u00e1 banka<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>Kalibr\u00e1cia<\/td><td>Na vylievanie (TD)<\/td><td>Na obsah (TC)<\/td><\/tr>\n<tr><td>\u00da\u010del<\/td><td>Prenos presn\u00e9ho objemu<\/td><td>Pr\u00edprava roztoku na presn\u00fd celkov\u00fd objem<\/td><\/tr>\n<tr><td>Typick\u00e9 ve\u013ekosti<\/td><td>1 a\u017e 100 ml<\/td><td>5 ml a\u017e 2 litre<\/td><\/tr>\n<tr><td>Zna\u010dka<\/td><td>Jedna zna\u010dka na stopke<\/td><td>Jedna zna\u010dka na hrdle<\/td><\/tr>\n<tr><td>Vyp\u00fa\u0161\u0165anie<\/td><td>Nech\u00e1 sa vytiec\u0165, hrot prilo\u017een\u00fd na stenu<\/td><td>Na meranie sa nevypr\u00e1zd\u0148uje; obsah sa pod\u013ea potreby vylieva<\/td><\/tr>\n<tr><td>Skladovanie kvapaliny<\/td><td>Nie<\/td><td>Nie na dlhodob\u00e9 skladovanie<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n<h2>Pre\u010do z\u00e1le\u017e\u00ed na TD a TC<\/h2>\n<p>Ke\u010f kvapalina zo skla vyte\u010die, zostane za \u0148ou tenk\u00fd film. Pr\u00edstroj TD je kalibrovan\u00fd s oh\u013eadom na tento film, tak\u017ee objem vytekaj\u00faci z pipety je uveden\u00fd objem. Pr\u00edstroj TC pri naplnen\u00ed po zna\u010dku obsahuje uveden\u00fd objem, ale mno\u017estvo, ktor\u00e9 mo\u017eno vylia\u0165, je o nie\u010do men\u0161ie. Preto by ste nikdy nemali pou\u017e\u00edva\u0165 banku na odmeranie objemu vylievan\u00edm.<\/p>\n<p>Obe s\u00fa ozna\u010den\u00e9 teplotou, zvy\u010dajne 20 stup\u0148ov Celzia, preto\u017ee sklo a kvapaliny sa teplom roz\u0165ahuj\u00fa. Pou\u017eitie pri ve\u013emi odli\u0161nej teplote prid\u00e1va mal\u00fa, ale re\u00e1lnu chybu.<\/p>\n\n<h2>Spolo\u010dn\u00e9 pou\u017e\u00edvanie<\/h2>\n<p>Be\u017en\u00fdm postupom je pr\u00edprava zrieden\u00e9ho \u0161tandardu. Do odmernej banky napipetujete presn\u00fd alikv\u00f3t z\u00e1sobn\u00e9ho roztoku, prid\u00e1te rozp\u00fa\u0161\u0165adlo, k\u00fdm sa menisk nedotkne zna\u010dky, banku zaz\u00e1tkujete a nieko\u013ekokr\u00e1t prevr\u00e1tite. Pipeta ur\u010duje mno\u017estvo odobrat\u00e9ho z\u00e1sobn\u00e9ho roztoku a banka kone\u010dn\u00fd objem, tak\u017ee faktor riedenia je zn\u00e1my presne.<\/p>\n<ul>\n<li>Pipetu pred plnen\u00edm opl\u00e1chnite trochou z\u00e1sobn\u00e9ho roztoku.<\/li>\n<li>Banku z\u00e1sobn\u00fdm roztokom neoplachujte; trocha vody vo vn\u00fatri nie je na \u0161kodu, preto\u017ee prid\u00e1vate rozp\u00fa\u0161\u0165adlo tak \u010di tak.<\/li>\n<li>Posledn\u00fdch nieko\u013eko mililitrov rozp\u00fa\u0161\u0165adla pridajte kvapkadlom alebo prem\u00fdvacou f\u013ea\u0161ou, aby ste neprekro\u010dili zna\u010dku.<\/li>\n<li>Mie\u0161ajte prevracan\u00edm; netraste bez sledovania zna\u010dky.<\/li>\n<\/ul>\n\n<h2>Presnos\u0165<\/h2>\n<p>Sklo triedy A m\u00e1 u\u017e\u0161ie tolerancie ne\u017e trieda B. Pipeta 10 ml triedy A m\u00e1 typicky presnos\u0165 asi 0,02 ml a banka 100 ml triedy A asi 0,08 ml. Tieto \u00fadaje sl\u00fa\u017eia ako orienta\u010dn\u00e9 a presn\u00e1 tolerancia je vytla\u010den\u00e1 alebo stanoven\u00e1 v pr\u00edslu\u0161nej norme. \u010cistota je nevyhnutn\u00e1: mastnota na vn\u00fatornom povrchu sp\u00f4sobuje, \u017ee kvapky lipn\u00fa, a deformuje menisk.<\/p>\n\n<h2>\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n<h3>M\u00f4\u017eem odmern\u00fa banku pou\u017ei\u0165 na uskladnenie roztoku?<\/h3>\n<p>Je lep\u0161ie to nerobi\u0165. Banky s\u00fa ur\u010den\u00e9 na pr\u00edpravu roztokov a dlh\u00e9 skladovanie m\u00f4\u017ee kvapalinu kontaminova\u0165 alebo lepta\u0165 sklo. Roztok prelejte do vhodnej ozna\u010denej f\u013ea\u0161e.<\/p>\n<h3>M\u00f4\u017eem odmern\u00fa banku zahrieva\u0165?<\/h3>\n<p>Vyhnite sa tomu. Zahrievanie a ochladzovanie m\u00f4\u017ee trvalo zmeni\u0165 objem skla, \u010do zni\u010d\u00ed kalibr\u00e1ciu.<\/p>\n<h3>Pre\u010do nevyfukujem posledn\u00fa kvapku odmernej pipety?<\/h3>\n<p>Kalibr\u00e1cia u\u017e tento mal\u00fd zvy\u0161ok zoh\u013ead\u0148uje, tak\u017ee jeho vyf\u00faknut\u00edm by sa vydalo o m\u00e1lo viac.<\/p>\n\n<h2>V\u00fdber kvapkadiel pre v\u00e1\u0161 produkt<\/h2>\n<p>Laborat\u00f3rne pipety a banky s\u00fa presn\u00e9 n\u00e1stroje. Kvapkadlo na f\u013ea\u0161ti\u010dke produktu funguje inak: je to zostava sklenenej pipety, gumi\u010dky a uz\u00e1veru, ktor\u00e1 d\u00e1vkuje kvapalinu po kvapk\u00e1ch a nie je kalibrovan\u00e1 na certifikovan\u00fd objem. Packaging.si montuje kvapkadl\u00e1 DIN18 v Slovinsku a dod\u00e1va zodpovedaj\u00face jant\u00e1rov\u00e9 sklenen\u00e9 f\u013ea\u0161ti\u010dky od 5 do 100 ml.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.packaging.si\/sk\/obchod\/\">Nav\u0161t\u00edvte obchod Packaging.si<\/a><\/li>\n<li><a href=\"https:\/\/www.packaging.si\/sk\/kategoria-produktu\/diely-a-komponenty\/\">Pipety, gumi\u010dky a uz\u00e1very<\/a><\/li>\n<li><a href=\"https:\/\/www.packaging.si\/sk\/kontaktujte-nas\/\">Vy\u017eiadajte si bezplatn\u00e9 vzorky<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>A volumetric pipette delivers one fixed volume of liquid, while a volumetric flask contains one fixed volume and is used to prepare solutions of a precise final volume. The pipette is calibrated to deliver (TD), and the flask is calibrated to contain (TC). They are often used together when making dilutions. What each piece of&#8230;<\/p>","protected":false},"author":1,"featured_media":108246,"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":[237],"tags":[],"class_list":["post-105878","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glass-pipettes"],"_links":{"self":[{"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/posts\/105878","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/comments?post=105878"}],"version-history":[{"count":1,"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/posts\/105878\/revisions"}],"predecessor-version":[{"id":901995,"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/posts\/105878\/revisions\/901995"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/media\/108246"}],"wp:attachment":[{"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/media?parent=105878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/categories?post=105878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.packaging.si\/sk\/wp-json\/wp\/v2\/tags?post=105878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}