Globe Scientific
20 µL Filter Pipette Tips, Graduated PosiStop Barrier — Bulk & Sterile, 1000/Bag | Globe Scientific
20 µL Filter Pipette Tips, Graduated PosiStop Barrier — Bulk & Sterile, 1000/Bag | Globe Scientific
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20 µL PosiStop Filter Pipette Tips, Graduated Aerosol Barrier — 1000/Bag
The Globe Scientific PosiStop Filter Pipette Tip 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.
Each 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.
Technical Specifications
| Product Type | PosiStop Filter Pipette Tip (aerosol barrier) |
| Volume/Size | 20 µL |
| Material | Virgin polypropylene; hydrophobic filter |
| Closure/Cap | Not applicable (pipette tip) |
| Graduation | Graduated |
| Sterility | Available non-sterile or sterile |
| Pack Size | 1000 tips per bulk bag |
Available Packagings
| Bulk Bag | 154205 | $84.40 |
| Bulk Bag, Sterile | 154205S | $90.00 |
Applications
- PCR and qPCR master mix and template setup
- Nucleic acid extraction and DNA/RNA handling
- Low-volume reagent dispensing under 20 µL
- Trace-level analytical and forensic sample prep
- Cell culture and microbiology aliquoting requiring sterile tips
- Serial dilutions where aerosol carryover must be prevented
Quality & Procurement
labsupplies.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.
Frequently Asked Questions
What is the difference between SKU 154205 and 154205S?
Both 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.
Do these tips prevent aerosol contamination?
Yes. The integrated hydrophobic PosiStop filter blocks aerosols and liquid from reaching the pipette barrel, protecting both samples and instruments during pipetting.
Are the tips universally compatible with micropipettes?
The 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.
Is tiered pricing available for large orders?
Yes. Institutional and grant-funded tiered pricing applies to both the bulk and sterile bags. Contact labsupplies.com with your volume requirements for a quote.
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