{"id":7527,"date":"2020-06-05T11:16:00","date_gmt":"2020-06-05T18:16:00","guid":{"rendered":"https:\/\/www.vernier.com\/til\/?p=7527"},"modified":"2020-09-21T10:54:40","modified_gmt":"2020-09-21T17:54:40","slug":"does-the-bacterial-filter-used-with-the-spirometers-filter-out-viruses","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/7527","title":{"rendered":"Does the bacterial filter used with Vernier spirometers filter out viruses?"},"content":{"rendered":"<p>The MicroGard<sup>\u00ae <\/sup>bacterial filter that is used with all Vernier spirometers is effective at filtering both bacteria and many viruses. In independent tests, this filter has shown to have a bacterial filtering efficiency (BFE) and viral filtration efficiency (VFE) that is greater than 99.99% and 99.95% respectively. The viral filtration efficiency tests were performed using bacteriophage virus, which is one of the smallest known viruses at 0.027 microns. For comparison, HIV viruses are 0.042 microns and Hepatitis C viruses are 0.03 micron in size. The COVID-19 virus (SARS-CoV-2) is reported to be 0.12 microns. Bacteria are much larger than viruses.&nbsp;<\/p>\n<p>For comparison. N95 masks filter particles down to 0.1 microns with 95% efficiency.&nbsp;<\/p>\n<p>To order bacterial filters see <a href=\"https:\/\/www.vernier.com\/product\/disposable-bacterial-filters-for-spirometer-10-pack\/\"><a href=\"https:\/\/www.vernier.com\/product\/disposable-bacterial-filters-for-spirometer-10-pack\/\">https:\/\/www.vernier.com\/product\/disposable-bacterial-filters-for-spirometer-10-pack\/<\/a><\/a><\/p>\n<p>For information on how to clean the flow head of the Spirometer (SPR-BTA), see <a href=\"https:\/\/www.vernier.com\/til\/4463\"><a href=\"https:\/\/www.vernier.com\/til\/4463\">https:\/\/www.vernier.com\/til\/4463<\/a><\/a><\/p>\n<p>For information on sterilizing and disinfecting sensors see <a href=\"https:\/\/www.vernier.com\/til\/6551\"><a href=\"https:\/\/www.vernier.com\/til\/6551\">https:\/\/www.vernier.com\/til\/6551<\/a><\/a><\/p>\n<p>More information about the MicroGard<sup>\u00ae<\/sup> bacterial filter can be found at the link below:<\/p>\n<div class=\"wp-block-file\"><a href=\"https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2020\/06\/MicroGard-772505-1-1.pdf\">MicroGard-772505-1-1<\/a><a href=\"https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2020\/06\/MicroGard-772505-1-1.pdf\" class=\"wp-block-file__button\" download>Download<\/a><\/div><\/p>","protected":false},"excerpt":{"rendered":"<p>The MicroGard\u00ae bacterial filter that is used with all Vernier spirometers is effective at filtering both bacteria and many viruses. In independent tests, this filter&#8230;<\/p>\n","protected":false},"author":8971,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[2106],"class_list":["post-7527","post","type-post","status-publish","format-standard","hentry","tag-filter"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/7527","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/8971"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=7527"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/7527\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=7527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=7527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=7527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}