Globe Scientific
20 µL Filter Pipette Tips, Low-Retention, Sterile — PosiStop, Bulk Bag 1000/Pack | Globe Scientific
20 µL Filter Pipette Tips, Low-Retention, Sterile — PosiStop, Bulk Bag 1000/Pack | Globe Scientific
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PosiStop 20 µL Low-Retention Filter Pipette Tips, Sterile, Graduated — Bulk Bag of 1000
The PosiStop Filter Pipette Tip delivers aerosol-barrier protection and low-retention performance for trace-sensitive workflows. Engineered for PCR and qPCR setup, nucleic acid handling, and sample dilution, these 20 µL sterile tips minimize carryover and cross-contamination while ensuring full sample recovery at small volumes.
Technical Specifications
| Product Type | Filter Pipette Tip (Aerosol Barrier) |
| Volume/Size | 20 µL |
| Material | Virgin Polypropylene |
| Closure/Cap | Integrated PosiStop barrier filter |
| Graduation | Graduated |
| Surface | Low-retention |
| Sterility | Sterile |
| Pack Size | Bulk bag, 1000 tips/bag |
Available Packagings
| Bulk Bag, Sterile (1000/bag) | 154305S | $96.00 |
Applications
- PCR and qPCR reaction setup requiring aerosol-barrier protection
- Low-volume nucleic acid (DNA/RNA) transfer and dilution series
- Sample loading where carryover contamination must be eliminated
- Trace-level reagent dispensing benefiting from low-retention surfaces
- Quantitative pipetting of viscous or protein-rich samples
- Molecular diagnostics and sequencing library preparation
Quality & Procurement
Globe Scientific PosiStop tips ship from US inventory through labsupplies.com, an authorized dealer. Each bag carries a lot number supporting traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact us for volume quotes on standing orders.
Frequently Asked Questions
What does the low-retention surface improve at 20 µL?
The hydrophobic, low-retention finish reduces liquid adhesion to the tip wall, improving sample recovery and pipetting accuracy for small, precious, or surfactant-containing volumes.
Are these tips supplied sterile and nuclease-free?
Yes. SKU 154305S is supplied sterile in a bulk bag of 1000, suitable for PCR, qPCR, and molecular biology workflows requiring contamination control.
How does the PosiStop barrier prevent contamination?
The integrated filter blocks aerosols and liquid from reaching the pipette shaft, preventing sample-to-sample carryover and protecting the instrument from cross-contamination.
How are the tips packaged?
They are supplied as a bulk bag of 1000 tips rather than racked, an economical format for high-throughput labs that refill their own racks or boxes.
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