{"id":2728,"date":"2016-05-16T17:51:09","date_gmt":"2016-05-16T16:51:09","guid":{"rendered":"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/?p=2728"},"modified":"2016-05-17T16:50:38","modified_gmt":"2016-05-17T15:50:38","slug":"filtratge-amb-puntes-de-pipeta","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/modul-b\/filtratge-amb-puntes-de-pipeta\/","title":{"rendered":"Filtratge amb puntes de pipeta."},"content":{"rendered":"<p><a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-02.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"  wp-image-2729 aligncenter\" src=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-02-484x1024.jpg\" alt=\"\" width=\"203\" height=\"429\" srcset=\"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-02-484x1024.jpg 484w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-02-142x300.jpg 142w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-02.jpg 1996w\" sizes=\"auto, (max-width: 203px) 100vw, 203px\" \/><\/a>Aquesta nova t\u00e8cnica de filtraci\u00f3 l&#8217;he pogut desenvolupar en les FCT (formaci\u00f3 en centres de treball). Aquesta permet recuperar el residu s\u00f2lid adherida al filtre (cercle blanc dins de la pipeta en la fotografia), a m\u00e9s de fer una filtraci\u00f3 normal i corrent.<\/p>\n<p>Resulta d&#8217;un muntatge molt senzill. Consta d&#8217;una punta de pipeta amb un filtre, una altra punta de pipeta d&#8217;uns 10 mL on se li ha retallat la punta per poder-hi posar la punta de pipeta amb filtre\u00a0i un pot, on se li foreda el seu tap per tal de que pugui circular l&#8217;aire.<\/p>\n<p><!--more-->La t\u00e8cnica en si \u00e9s molt senzilla i molt \u00fatil ja que et permet tant filtrar la teva mostra i recuperar el residu s\u00f2lid per an\u00e0lisis posteriors.<\/p>\n<p>Comen\u00e7arem doncs, activant el filtre per a que la mostra traspassi el filtre i comenci\u00a0la filtraci\u00f3. Per fer-ho,amb una xeringa s&#8217;injectar\u00e0 aire a pressi\u00f3 tal i com veiem a la imatge que ve a continuaci\u00f3.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-01.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-2730  aligncenter\" src=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-01-941x1024.jpg\" alt=\"\" width=\"285\" height=\"310\" srcset=\"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-01-941x1024.jpg 941w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Activacio-01-276x300.jpg 276w\" sizes=\"auto, (max-width: 285px) 100vw, 285px\" \/><\/a>Un cop el l\u00edquid travessa el filtre, ja s&#8217;estableix un flux continu. Un cop fet aix\u00f2 hem d&#8217;esperar a que es filtri tota la mostra abocada a la punta de pipeta m\u00e9s gran connectada a la m\u00e9s petita (la que t\u00e9 el filtre). Aix\u00f2 ens permet fer moltes filtracions a la vegada, jo per exemple he arribat a fer 50. Nom\u00e9s s&#8217;ha de controlar que no pari el flux, aix\u00f2 pot passar si hi ha molta mat\u00e8ria en suspensi\u00f3, circula poc aire&#8230; El que s&#8217;ha de fer es tornar a fer pressi\u00f3 amb la xeringa.<\/p>\n<p>Un cop feta la filtraci\u00f3, procedim a la recuperaci\u00f3 del residu s\u00f2lid. Amb la mateixa xeringa utilitzada per fer pressi\u00f3, l&#8217;omplirem amb una mica d&#8217;aigua destil\u00b7lada, empalmem la punta de la pipeta amb el filtre posada del rev\u00e9s i fem pressi\u00f3 per a que l&#8217;aigua destil\u00b7lada traspassi el filtre i arrossegui\u00a0els s\u00f2lids adherits al filtre.<\/p>\n<p><a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Recup-03.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"  wp-image-2731 aligncenter\" src=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Recup-03-768x1024.jpg\" alt=\"\" width=\"254\" height=\"338\" srcset=\"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Recup-03-768x1024.jpg 768w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2016\/05\/Recup-03-225x300.jpg 225w\" sizes=\"auto, (max-width: 254px) 100vw, 254px\" \/><\/a>D&#8217;aquesta manera podem fer an\u00e0lisis tan del residu s\u00f2lid com del filtrat, \u00e9s una t\u00e8cnica molt senzilla i a la vegada molt \u00fatil.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aquesta nova t\u00e8cnica de filtraci\u00f3 l&#8217;he pogut desenvolupar en les FCT (formaci\u00f3 en centres de treball). Aquesta permet recuperar el [&hellip;]<\/p>\n","protected":false},"author":41,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[268,174],"tags":[283],"class_list":["post-2728","post","type-post","status-publish","format-standard","hentry","category-fct","category-modul-b","tag-microbiologia"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/posts\/2728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/users\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/comments?post=2728"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/posts\/2728\/revisions"}],"predecessor-version":[{"id":2867,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/posts\/2728\/revisions\/2867"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/media?parent=2728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/categories?post=2728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/tags?post=2728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}