Globe Scientific
20 µL Pipette Tips, PosiStop Low-Retention, Sterile Graduated — Bulk Bag, 1000/Bag | Globe Scientific
20 µL Pipette Tips, PosiStop Low-Retention, Sterile Graduated — Bulk Bag, 1000/Bag | Globe Scientific
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PosiStop 20 µL Low-Retention Sterile Pipette Tips, Graduated — Bulk Bag, 1000/Bag
The PosiStop 20 µL Low-Retention Pipette Tip delivers consistent micro-volume dispensing for qPCR setup, nucleic acid extraction, and reagent serial dilutions. Its low-retention surface minimizes sample film, recovering more of every microliter where viscous or protein-rich samples cling to standard polypropylene. Graduation marks aid quick volume confirmation at the bench.
Technical Specifications
| Product Type | Low-retention pipette tip |
|---|---|
| Volume/Size | 20 µL |
| Material | Polypropylene, low-retention surface |
| Closure/Cap | N/A (open tip) |
| Graduation | Graduated |
| Sterility | Sterile |
| Pack Size | 1000 tips per bulk bag |
Available Packagings
| Packaging | SKU | Price (per bag) |
|---|---|---|
| Bulk Bag, Sterile — 1000/bag | 154105S | $30.30 |
Applications
- qPCR and PCR master-mix assembly requiring precise small-volume transfers
- Nucleic acid and protein sample handling where surface retention skews recovery
- Serial dilution preparation for standard curves and assay validation
- Reagent aliquoting into microplates and microcentrifuge tubes
- Enzyme and antibody dispensing where sample conservation matters
- Genomics and molecular biology workflows demanding sterile consumables
Quality & Procurement
Globe Scientific PosiStop tips ship from US inventory through labsupplies.com, an authorized dealer. Bags carry lot numbers supporting traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our procurement team for volume quotes and standing-order arrangements.
Frequently Asked Questions
What makes these tips low-retention?
The tip surface is engineered to reduce liquid adhesion, so viscous, protein-rich, or detergent-containing samples release fully rather than leaving a residual film. This improves recovery and pipetting accuracy at the 20 µL scale.
Are the tips supplied sterile?
Yes. SKU 154105S is supplied sterile in a bulk bag of 1000 tips, suitable for molecular biology and cell-culture workflows that require contaminant-free consumables.
Are these tips graduated?
Yes. Graduation marks are molded onto each tip, allowing rapid visual confirmation of aspirated volume directly at the bench.
How are these tips sold and tracked?
Tips are sold per bag of 1000. Each bag carries a lot number for traceability, supporting documentation needs in accredited laboratory environments.
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