3.5 mL Graduated Transfer Pipets — Sterile, LDPE, Natural (222-1580-02I) | 500/Bag
These 3.5 mL graduated transfer pipets deliver flexible, one-hand liquid handling with printed volume graduation marks on the bulb and/or stem, allowing analysts to read approximate delivered volumes — typically in 0.5 mL increments — without a separate measuring vessel. Manufactured from low-density polyethylene (LDPE) for smooth, progressive bulb compression, each pipet is individually sterile-packed and supplied 500 per bag. The natural (translucent) color maximizes visibility of the liquid meniscus and the printed graduation marks during use.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 222-1580-02I |
| Capacity | 3.5 mL |
| Tip Type | Graduated |
| Tip Detail | Standard taper tip with printed graduation marks on bulb and/or stem |
| Graduation Increment | 0.5 mL |
| Drop Size | ~40 µL per drop |
| Material | Low-Density Polyethylene (LDPE) |
| Color | Natural (translucent) |
| Sterility | Sterile — individually sterile-packed |
| Pack Size | 500/Bag |
| BPA / Phthalate / Latex | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
Applications
- Blood banking & plasma volume dispensing: Read the required plasma or serum volume directly on the bulb or stem graduation marks, then dispense to a tube panel — no volumetric pipette required.
- Serology reagent dispensing: Antibody screening and crossmatch setup benefit from the ~40 µL drop size combined with on-body volume verification for dose confirmation.
- Manual ELISA setup: Deliver approximate antigen or antibody coating volumes to microplate wells without transferring to a separate measuring vessel first.
- Microbiology broth dilutions: Perform serial dilutions in tubes with volume marks serving as a quick visual reference for each transfer step.
- Clinical point-of-care & manual test kits: Individual sterile packaging satisfies single-use aseptic requirements; graduated marks support volume-read workflows at the bench.
- Quality control sample preparation: Add known approximate volumes of QC material to panel tubes while reducing handling steps in manual workflows.
- Teaching & student laboratories: Graduation marks provide a practical tool for volume estimation exercises and student pipetting technique training.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers and saline | Excellent |
| Serum, plasma, and whole blood | Excellent — low extractable profile |
| Dilute acids and bases | Good |
| Biological reagents and culture media | Good |
| Ethanol and isopropanol (dilute) | Good — short-term contact |
| Aromatic solvents (toluene, xylene) | Not recommended |
| Chlorinated solvents (chloroform, DCM) | Not recommended |
| Acetone and ketones | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen graduated transfer pipets are produced from FDA-compliant LDPE resin that is BPA-free, phthalate-free, and latex-free. Individual sterile packaging eliminates the need for autoclaving and ensures each pipet is ready to use directly from the bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with same-business-day dispatch available for stocking items and tiered volume pricing for institutional, clinical, and grant-funded laboratories.
Frequently Asked Questions
Are these transfer pipets individually sterile, or is the entire bag sterile?
Each pipet is individually sterile-packed, so technicians can open single units as needed without compromising the sterility of the remaining pipets in the bag — ideal for point-of-care and aseptic workflows.
How precise are the graduated volume marks?
The printed graduation marks are intended for approximate volume delivery in 0.5 mL increments. They are suitable for clinical, serology, and blood banking workflows where a volumetric-grade measurement is not required, but a visual volume check is necessary before or during dispensing.
Can these pipets be used with solvents such as acetone or chloroform?
No. LDPE is not resistant to aromatic or chlorinated solvents, nor to ketones such as acetone. These pipets are designed for aqueous biological matrices — serum, plasma, buffers, and similar reagents — where LDPE's low extractable profile and flexibility are the primary advantages.
How does part number 222-1580-02I differ from the other pipets in the Caplugs® Evergreen 222-15xx series?
The 222-1580-02I is the graduated format in the series, distinguished by its on-body volume graduation marks for approximate volume reading. Other members of the series include standard, blood bank, fine tip, and long stem formats, each optimized for a different application or drop-size requirement.