Globe Scientific
200 µL Filter Pipette Tips, Graduated PosiStop Barrier — Bulk, Racked & Sterile, 1000/Pack | Globe Scientific
200 µL Filter Pipette Tips, Graduated PosiStop Barrier — Bulk, Racked & Sterile, 1000/Pack | Globe Scientific
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200 µL PosiStop Graduated Filter Pipette Tips — Bulk, Racked & Sterile, 1000/Pack
The Globe Scientific PosiStop Filter Pipette Tip delivers reliable aerosol-barrier protection for 200 µL pipetting in sensitive molecular workflows. Engineered with a hydrophobic self-sealing barrier, these graduated tips guard pipettes against sample carryover during PCR setup, nucleic acid extraction, and infectious-sample handling. Choose bulk, sterile, or racked formats to match throughput and contamination-control needs.
Technical Specifications
| Product Type | PosiStop aerosol barrier filter pipette tip |
|---|---|
| Volume/Size | 200 µL |
| Material | Virgin polypropylene with hydrophobic filter |
| Closure/Cap | Self-sealing aerosol barrier (PosiStop) |
| Graduation | Graduated |
| Sterility | Sterile and non-sterile options |
| Pack Size | 1000 tips per pack (bulk bag/1000 or 10 racks of 96/box) |
Available Packagings
| Packaging | SKU | Price (per pack) |
|---|---|---|
| Bulk Bag, 1000/bag | 154220 | $85.30 |
| Bulk Bag, Sterile, 1000/bag | 154220S | $90.90 |
| Racked, Sterile, 96/rack, 10 racks/box | 154220RS | $127.80 |
| GreenRack, Sterile, 96/rack, 10 racks/box | 154220ERS | $113.80 |
Applications
- PCR and qPCR reaction setup requiring aerosol contamination control
- DNA and RNA extraction and purification protocols
- Next-generation sequencing library preparation
- Handling of radioactive or infectious specimens
- Clinical and diagnostic sample dispensing on automated and manual pipettes
- Cell culture media transfer where sterility is critical
Quality & Procurement
Globe Scientific tips ship from US inventory through labsupplies.com, an authorized dealer. Each bag, rack box, and case carries lot numbers, supporting full traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available for repeat and high-volume procurement on request.
Frequently Asked Questions
Are these PosiStop filter tips certified free of DNase, RNase, and pyrogens?
Sterile variants are manufactured for molecular biology use and are purity-validated for the absence of DNase, RNase, and endotoxin. Confirm lot-specific documentation through labsupplies.com before validation-critical workflows.
What is the difference between the standard racked and GreenRack formats?
Both supply 96 tips per rack across 10 racks per box. The GreenRack uses a reduced-plastic, more sustainable rack design, lowering packaging waste and per-pack cost while maintaining the same tip geometry and sterility.
Will the 200 µL tips fit standard micropipettes?
These are universal-fit 200 µL tips compatible with most common single- and multichannel pipettes in that range. Verify seal and fit with your specific pipette brand prior to large-scale ordering.
How does the PosiStop barrier prevent contamination?
A hydrophobic self-sealing filter blocks aerosols and liquid from reaching the pipette shaft. This stops sample-to-sample carryover and protects the instrument, which is essential in PCR and trace-level assays.
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