{"id":63736,"date":"2022-04-23T16:20:06","date_gmt":"2022-04-23T21:20:06","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/when-should-i-use-a-glass-beaker\/"},"modified":"2025-01-27T06:18:05","modified_gmt":"2025-01-27T11:18:05","slug":"when-should-i-use-a-glass-beaker","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/when-should-i-use-a-glass-beaker\/","title":{"rendered":"Sklen\u011bn\u00e1 k\u00e1dinka: Kdy a pro\u010d ji pou\u017e\u00edt?"},"content":{"rendered":"<p>Sklen\u011bn\u00e9 k\u00e1dinky jsou v laborato\u0159\u00edch v\u0161udyp\u0159\u00edtomn\u00e9 a jejich pou\u017eit\u00ed je \u0161irok\u00e9.  Spr\u00e1vn\u00e9 pou\u017eit\u00ed z\u00e1vis\u00ed na konkr\u00e9tn\u00ed \u00faloze a vlastnostech experimentu.  Nen\u00ed to jen o tom, co se v k\u00e1dince d\u011bje, ale i o tom, co se d\u011bje kolem n\u00ed.<\/p>\n<p>Teplotn\u00ed odolnost a chemick\u00e1 inertnost<\/p>\n<p>Sklen\u011bn\u00e9 k\u00e1dinky, typicky vyroben\u00e9 z borosilik\u00e1tov\u00e9ho skla, vynikaj\u00ed svou vysokou teplotn\u00ed odolnost\u00ed a chemickou inertnost\u00ed.  To je kl\u00ed\u010dov\u00e9 pro mnoho aplikac\u00ed.  M\u016f\u017eete v nich zah\u0159\u00edvat roztoky, prov\u00e1d\u011bt reakce s agresivn\u00edmi chemik\u00e1liemi, a p\u0159itom minimalizovat riziko kontaminace nebo po\u0161kozen\u00ed n\u00e1doby.  Naopak, pro pr\u00e1ci s extr\u00e9mn\u011b korozivn\u00edmi l\u00e1tkami (nap\u0159. kyselina fluorovod\u00edkov\u00e1)  se sklen\u011bn\u00e9 k\u00e1dinky nehod\u00ed.<\/p>\n<p>M\u00edch\u00e1n\u00ed a m\u00edsen\u00ed<\/p>\n<p>Sklen\u011bn\u00e9 k\u00e1dinky jsou ide\u00e1ln\u00ed pro m\u00edch\u00e1n\u00ed a m\u00edsen\u00ed r\u016fzn\u00fdch l\u00e1tek. Jejich v\u00e1lcov\u00fd tvar umo\u017e\u0148uje snadn\u00e9 prom\u00edch\u00e1n\u00ed pomoc\u00ed m\u00edchac\u00ed ty\u010dinky nebo magnetick\u00e9ho m\u00edchadla.  D\u00edky transparentnosti skla je snadn\u00e9 sledovat proces m\u00edch\u00e1n\u00ed a pozorovat zm\u011bny v roztoku.  Av\u0161ak pro rozs\u00e1hl\u00e9 m\u00edsen\u00ed velk\u00fdch objem\u016f je vhodn\u011bj\u0161\u00ed pou\u017e\u00edt jin\u00e9 n\u00e1doby.<\/p>\n<p>Titrace a dal\u0161\u00ed kvantitativn\u00ed anal\u00fdzy<\/p>\n<p>D\u00edky sv\u00e9 transparentnosti a p\u0159esn\u011b definovan\u00e9mu tvaru jsou sklen\u011bn\u00e9 k\u00e1dinky vhodn\u00e9 pro titrace a dal\u0161\u00ed kvantitativn\u00ed anal\u00fdzy.  Umo\u017e\u0148uj\u00ed snadn\u00e9 ode\u010d\u00edt\u00e1n\u00ed objemu a p\u0159esn\u00e9 sledov\u00e1n\u00ed zm\u011bn indik\u00e1toru.  V kombinaci s byretami a pipetou p\u0159edstavuj\u00ed z\u00e1kladn\u00ed n\u00e1stroje pro mnoho analytick\u00fdch postup\u016f.<\/p>\n<p>Porovn\u00e1n\u00ed s jin\u00fdmi materi\u00e1ly<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Materi\u00e1l<\/th>\n<th>V\u00fdhody<\/th>\n<th>Nev\u00fdhody<\/th>\n<th>Vhodn\u00e9 pro<\/th>\n<th>Nevhodn\u00e9 pro<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Sklo (borosilik\u00e1tov\u00e9)<\/td>\n<td>Vysok\u00e1 teplotn\u00ed odolnost, chemick\u00e1 inertnost, transparentnost<\/td>\n<td>K\u0159ehk\u00e9, snadno se rozbije<\/td>\n<td>Zah\u0159\u00edv\u00e1n\u00ed roztok\u016f, titrace, reakce s chemik\u00e1liemi<\/td>\n<td>Reakce s HF, vysokotlak\u00e9 aplikace<\/td>\n<\/tr>\n<tr>\n<td>Plast (polypropylen)<\/td>\n<td>Lehk\u00e9, odoln\u00e9 proti rozbit\u00ed, levn\u00e9<\/td>\n<td>Ni\u017e\u0161\u00ed teplotn\u00ed odolnost, m\u00e9n\u011b chemicky inertn\u00ed<\/td>\n<td>M\u00edch\u00e1n\u00ed, skladov\u00e1n\u00ed<\/td>\n<td>Zah\u0159\u00edv\u00e1n\u00ed, reakce s rozpou\u0161t\u011bdly<\/td>\n<\/tr>\n<tr>\n<td>Kov (nerezov\u00e1 ocel)<\/td>\n<td>Odoln\u00e9, vhodn\u00e9 pro vysok\u00e9 teploty<\/td>\n<td>Netransparentn\u00ed, m\u016f\u017ee reagovat s n\u011bkter\u00fdmi chemik\u00e1liemi<\/td>\n<td>Zah\u0159\u00edv\u00e1n\u00ed, m\u00edch\u00e1n\u00ed, skladov\u00e1n\u00ed<\/td>\n<td>Titrace, kvantitativn\u00ed anal\u00fdzy<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Bezpe\u010dnostn\u00ed aspekty<\/p>\n<p>P\u0159i pr\u00e1ci se sklen\u011bn\u00fdmi k\u00e1dinkami je nutn\u00e9 db\u00e1t na bezpe\u010dnost.  Je d\u016fle\u017eit\u00e9 je pou\u017e\u00edvat opatrn\u011b, aby se zabr\u00e1nilo rozbit\u00ed a poran\u011bn\u00ed.  V\u017edy je nutn\u00e9 pou\u017e\u00edvat ochrann\u00e9 pom\u016fcky, jako jsou ochrann\u00e9 br\u00fdle a rukavice.<\/p>\n<p>Z\u00e1v\u011brem, sklen\u011bn\u00e9 k\u00e1dinky jsou univerz\u00e1ln\u00ed a nepostradateln\u00e9 n\u00e1doby v laborato\u0159i.  Jejich pou\u017eit\u00ed je z\u00e1visl\u00e9 na specifick\u00fdch po\u017eadavc\u00edch experimentu, p\u0159i\u010dem\u017e je d\u016fle\u017eit\u00e9 zv\u00e1\u017eit jejich vlastnosti, v\u00fdhody a nev\u00fdhody v porovn\u00e1n\u00ed s jin\u00fdmi materi\u00e1ly.  Spr\u00e1vn\u00e1 manipulace a dodr\u017eov\u00e1n\u00ed bezpe\u010dnostn\u00edch p\u0159edpis\u016f jsou kl\u00ed\u010dov\u00e9 pro bezpe\u010dnou a efektivn\u00ed pr\u00e1ci.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sklen\u011bn\u00e9 k\u00e1dinky jsou v laborato\u0159\u00edch v\u0161udyp\u0159\u00edtomn\u00e9 a jejich pou\u017eit\u00ed je \u0161irok\u00e9. Spr\u00e1vn\u00e9 pou\u017eit\u00ed z\u00e1vis\u00ed na konkr\u00e9tn\u00ed \u00faloze a vlastnostech experimentu. Nen\u00ed to jen o tom, co se v k\u00e1dince d\u011bje, ale i o tom, co se d\u011bje kolem n\u00ed. Teplotn\u00ed odolnost a chemick\u00e1 inertnost Sklen\u011bn\u00e9 k\u00e1dinky, typicky vyroben\u00e9 z borosilik\u00e1tov\u00e9ho skla, vynikaj\u00ed svou vysokou teplotn\u00ed<\/p>\n","protected":false},"author":1,"featured_media":20077,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-63736","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/63736","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=63736"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/63736\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/20077"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=63736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=63736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=63736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}