{"product_id":"globe-tip-154205","title":"20 µL Filter Pipette Tips, Graduated PosiStop Barrier — Bulk \u0026 Sterile, 1000\/Bag | Globe Scientific","description":"\u003ch2\u003e20 µL PosiStop Filter Pipette Tips, Graduated Aerosol Barrier — 1000\/Bag\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGlobe Scientific PosiStop Filter Pipette Tip\u003c\/strong\u003e is a 20 µL graduated barrier tip engineered to block aerosols and liquid carryover during sensitive pipetting. Lab teams rely on it for PCR and qPCR setup, nucleic acid handling, and trace-contaminant analysis where sample-to-sample integrity is critical.\u003c\/p\u003e\n\u003cp\u003eEach graduated tip delivers clear volume reference at the bench, while the integrated hydrophobic filter guards pipette barrels from biological and chemical contamination. Choose the non-sterile bulk bag for routine work or the certified sterile bag for cleaner workflows.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePosiStop Filter Pipette Tip (aerosol barrier)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e20 µL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eVirgin polypropylene; hydrophobic filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eNot applicable (pipette tip)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGraduation\u003c\/td\u003e\n\u003ctd\u003eGraduated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eAvailable non-sterile or sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000 tips per bulk bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAvailable Packagings\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBulk Bag\u003c\/td\u003e\n\u003ctd\u003e154205\u003c\/td\u003e\n\u003ctd\u003e$84.40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBulk Bag, Sterile\u003c\/td\u003e\n\u003ctd\u003e154205S\u003c\/td\u003e\n\u003ctd\u003e$90.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePCR and qPCR master mix and template setup\u003c\/li\u003e\n\u003cli\u003eNucleic acid extraction and DNA\/RNA handling\u003c\/li\u003e\n\u003cli\u003eLow-volume reagent dispensing under 20 µL\u003c\/li\u003e\n\u003cli\u003eTrace-level analytical and forensic sample prep\u003c\/li\u003e\n\u003cli\u003eCell culture and microbiology aliquoting requiring sterile tips\u003c\/li\u003e\n\u003cli\u003eSerial dilutions where aerosol carryover must be prevented\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.com is an authorized Globe Scientific dealer shipping from US inventory. Every bag carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available on bulk and sterile configurations.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the difference between SKU 154205 and 154205S?\u003c\/h3\u003e\n\u003cp\u003eBoth are 20 µL graduated PosiStop filter tips packed 1000 per bulk bag. SKU 154205 is non-sterile, while 154205S is supplied sterile for contamination-sensitive workflows.\u003c\/p\u003e\n\u003ch3\u003eDo these tips prevent aerosol contamination?\u003c\/h3\u003e\n\u003cp\u003eYes. The integrated hydrophobic PosiStop filter blocks aerosols and liquid from reaching the pipette barrel, protecting both samples and instruments during pipetting.\u003c\/p\u003e\n\u003ch3\u003eAre the tips universally compatible with micropipettes?\u003c\/h3\u003e\n\u003cp\u003eThe 20 µL tip fits most standard micropipettes designed for this volume range. Confirm fit against your pipette's tip specification before standardizing across a fleet.\u003c\/p\u003e\n\u003ch3\u003eIs tiered pricing available for large orders?\u003c\/h3\u003e\n\u003cp\u003eYes. Institutional and grant-funded tiered pricing applies to both the bulk and sterile bags. 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