3.5 mL Standard Transfer Pipets — Sterile, LDPE, Natural, 500/Bag (222-1577-02I)
These 3.5 mL low-density polyethylene (LDPE) transfer pipets are sterile, individually packed, and designed for general-purpose one-handed aspirate-and-transfer of aqueous samples, reagents, and biological fluids across clinical, research, and educational laboratory workflows. The standard taper tip delivers approximately 45 µL per drop, providing consistent reagent delivery without specialized equipment. Part number 222-1577-02I ships in convenient 500/Bag quantities from US stock.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 222-1577-02I |
| Capacity | 3.5 mL |
| Tip Type | Standard Taper |
| Drop Size | ~45 µL per drop |
| Material | Low-Density Polyethylene (LDPE) |
| Color | Natural |
| Sterility | Sterile — individually sterile-packed |
| Pack Size | 500/Bag |
| BPA / Phthalate / Latex | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
Applications
- Serology & blood banking: One-handed aspirate-and-transfer of serum, plasma, and antibody reagents during tube serology and antibody identification panels
- Microbiology: Aseptic transfer between culture tubes and broths — individual sterile packaging eliminates cross-contamination risk
- Histology staining: Consistent ~45 µL drop delivery for reagent dispensing onto staining trays and slides
- Cell culture: Cell suspension transfer and passaging, where LDPE's low extractable profile minimizes interference with living cells
- Urinalysis: Aspiration of urine sediment from spun tubes for microscopic examination
- Clinical chemistry: Manual reagent transfer and general assay setup across a wide range of analyte types
- Teaching & student laboratories: Single-use sterile pipets prevent cross-contamination between students without autoclaving or pre-treatment
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Serum, plasma, whole blood | Excellent — low extractables suitable for direct biological fluid contact |
| Dilute acids and bases (pH 4–12) | Excellent |
| Ethanol (<70%) | Good — short-term contact acceptable |
| Acetone / chlorinated solvents | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen transfer pipets are produced from FDA-compliant, BPA-free, phthalate-free, and latex-free LDPE resin. Each pipet is individually sterile-packed, eliminating the need for autoclaving and simplifying aseptic workflow in any setting. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, typically same business day for stocking items, with tiered pricing available for high-volume institutional, clinical, and grant-funded accounts.
Frequently Asked Questions
Are these transfer pipets sterile out of the bag?
Yes — each pipet is individually sterile-packed. No autoclaving or additional processing is required before use in aseptic protocols such as microbiology transfers or cell culture work.
Can these pipets be used with blood, serum, or plasma?
Yes. LDPE has a low extractable profile and is well suited for direct contact with biological fluids including whole blood, serum, and plasma, making these pipets appropriate for serology, blood banking, and clinical chemistry applications.
What does "natural" color mean, and does it affect visibility?
Natural refers to the unpigmented, translucent appearance of the LDPE resin. The translucency allows technicians to see fluid level and tip fill status during aspiration and dispensing.
How does the 222-1577-02I differ from the other pipets in the 222-15xx series?
This is the standard-tip member of the series, featuring a 3.5 mL capacity and a ~45 µL drop size for general-purpose work. Other members of the series include graduated, fine-tip, blood bank, and long-stem variants suited to more specialized workflows; consult the series listing to select the correct geometry for your application.