Globe Scientific
20 µL PosiStop Pipette Tips, Graduated, Bulk Bag — Sterile & Non-Sterile, 1000/Bag | Globe Scientific
20 µL PosiStop Pipette Tips, Graduated, Bulk Bag — Sterile & Non-Sterile, 1000/Bag | Globe Scientific
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20 µL PosiStop Pipette Tips, Graduated, Bulk Bag — 1000/Bag
Globe Scientific PosiStop Pipette Tips deliver a consistent positive-stop seat on compatible micropipettes, supporting reproducible 20 µL aspiration for PCR setup, serial dilutions, and routine reagent transfer. Molded graduations let bench scientists verify draw volumes at a glance, while the bulk bag format keeps high-throughput workflows stocked at a low per-tip cost.
Technical Specifications
| Product Type | PosiStop pipette tip |
|---|---|
| Volume/Size | 20 µL |
| Material | Virgin polypropylene |
| Closure/Cap | Open tip, positive-stop seating collar |
| Graduation | Molded graduations |
| Sterility | Non-sterile or sterile (variant-dependent) |
| Pack Size | 1000 tips per bulk bag |
Available Packagings
| Packaging | SKU | Price (per bag of 1000) |
|---|---|---|
| Bulk Bag | 154005 | $17.20 |
| Bulk Bag, Sterile | 154005S | $23.40 |
Applications
- PCR and qPCR master mix and template dispensing
- Serial dilution series for assay standard curves
- Reagent aliquoting in molecular biology workflows
- Loading low-volume samples for spectrophotometry
- Enzyme and buffer additions during kit-based protocols
- General microliter transfers at the analytical bench
Quality & Procurement
Order from labsupplies.com, an authorized Globe Scientific dealer shipping from US inventory. Each bulk bag carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact our team for volume quotes on standing tip orders.
Frequently Asked Questions
What is the difference between SKU 154005 and 154005S?
Both are 20 µL graduated PosiStop tips in bags of 1000. SKU 154005 is non-sterile for general use, while 154005S is supplied sterile for nuclease-sensitive and contamination-critical applications.
Are these tips graduated?
Yes. Both packaging options feature molded graduations, allowing operators to visually confirm aspirated volume during low-volume pipetting.
How many tips are in each bag?
Each bulk bag contains 1000 tips. The listed price is per bag for both the sterile and non-sterile options.
Will PosiStop tips fit my pipette?
PosiStop tips are designed with a positive-stop collar for a consistent seat on compatible micropipettes. Confirm pipette compatibility against your instrument's tip specification before ordering.
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