{"id":5551,"date":"2026-06-24T09:05:29","date_gmt":"2026-06-24T01:05:29","guid":{"rendered":"https:\/\/www.bacintl.com\/?p=5551"},"modified":"2026-06-24T08:43:26","modified_gmt":"2026-06-24T00:43:26","slug":"what-are-the-applicable-scenarios-for-negative-pressure-laminar-flow-workstations-and-vertical-flow-workstations","status":"publish","type":"post","link":"https:\/\/www.bacintl.com\/ar\/what-are-the-applicable-scenarios-for-negative-pressure-laminar-flow-workstations-and-vertical-flow-workstations\/","title":{"rendered":"What are the applicable scenarios for negative pressure laminar flow workstations and vertical flow workstations?"},"content":{"rendered":"<p>I. Vertical Flow Workbench (Positive Pressure Class 100 Cleanroom)<br \/>\nApplicable Scenarios:<br \/>\nCore Feature: Internal positive pressure, clean air flows vertically downward, only protecting the samples but not the operators, no dust\/toxic substance leakage protection capability.<br \/>\nApplicable Conditions:<br \/>\nAseptic and dust-free, non-toxic material operations<br \/>\nBiological: Cell culture, tissue inoculation, common bacterial strain purification, sterile medium preparation (non-positive pathogenic bacteria)<br \/>\nPharmaceutical: Ordinary sterile formulation preparation, excipient packaging, sterile equipment organization<br \/>\nElectronic\/Optical: Chips, circuit boards, lenses, precision components assembly, dust-free inspection<br \/>\nAgriculture: Cultivation of tissue cultures, sterile inoculation operations<br \/>\nOnly needed to prevent external dust from contaminating the products, without generating dust, aerosols, or toxic volatile substances in the process<br \/>\nProhibited Usage Scenarios:<br \/>\nHighly active drug weighing, powder packaging, hormones\/anti-tumor drugs, heavy metals, allergenic dust, pathogenic bacteria, volatile toxic reagents. Dust will spread outward and harm the operators.<br \/>\nII. Negative Pressure Laminar Flow Workbench (Negative Pressure Weighing Hood \/ Negative Pressure Workstation)<br \/>\nApplicable Scenarios:<br \/>\nCore Feature: Cabinet internal negative pressure, vertical laminar flow protection for products, continuous inward suction of the operation surface to prevent dust leakage, while protecting people, the environment, and samples, with exhaust filtration.<br \/>\nApplicable Conditions:<br \/>\nPharmaceutical GMP powder processes (most commonly used)<br \/>\nHighly active drugs, hormones, anti-tumor drugs, antibiotics, allergenic raw materials, weighing, sampling, pulverization, packaging<br \/>\nHigh dusting materials such as herbal powder, chemical raw materials, pigment dust, etc. operations<br \/>\nHigh-risk microbial experiments<br \/>\nPositive bacteria, viruses, pathogenic bacteria, fungal spores operations (equivalent to secondary biological safety protection), preventing aerosol diffusion from contaminating the laboratory<br \/>\nChemical, laboratory toxic material handling<br \/>\nHeavy metal powders, chemical dyes, fragrant allergenic powder, trace toxic solid reagents weighing<br \/>\nAll processes with dust, prone to generating aerosols, and with occupational exposure risks<br \/>\nNot Recommended Scenarios:<br \/>\nOnly ordinary aseptic liquid operations, dust-free clean assembly, using ordinary vertical flow workbench is more cost-effective and does not require negative pressure equipment. <br \/>\nScene Comparison Summary<\/p>\n<table style=\"border-collapse: collapse; width: 100%; height: 72px;\" border=\"1\">\n<tbody>\n<tr style=\"height: 24px;\">\n<td style=\"width: 50%; height: 24px;\">Equipment<\/td>\n<td style=\"width: 50%; height: 24px;\">Core Application Scenarios<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 50%; height: 24px;\">Vertical flow workbench<\/td>\n<td style=\"width: 50%; height: 24px;\">Cell culture, sterile solution preparation, electronic dust-free assembly, plant tissue culture, etc. &#8211; all dust-free and non-toxic clean operations.<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 50%; height: 24px;\">Negative pressure laminar flow workbench<\/td>\n<td style=\"width: 50%; height: 24px;\">Powder weighing and packaging, highly active raw materials, pathogenic bacteria operation, handling of heavy metals \/ allergenic dusts<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>I. Vertical Flow Workbench (Positive Pressure Class 100 Cleanroom) Applicable Scenarios: Core Feature: Internal positive pressure, clean air flows vertically downward, only protecting the samples but not the operators, no dust\/toxic substance leakage protection capability. Applicable Conditions: Aseptic and dust-free, non-toxic material operations Biological: Cell culture, tissue inoculation, common bacterial strain purification, sterile medium preparation [&hellip;]<\/p>","protected":false},"author":12,"featured_media":5552,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[92],"tags":[],"class_list":["post-5551","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-technology"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/comments?post=5551"}],"version-history":[{"count":1,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5551\/revisions"}],"predecessor-version":[{"id":5553,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/posts\/5551\/revisions\/5553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/media\/5552"}],"wp:attachment":[{"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/media?parent=5551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/categories?post=5551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bacintl.com\/ar\/wp-json\/wp\/v2\/tags?post=5551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}