3.5 mL Standard Transfer Pipets — LDPE, Natural, 45 µL Drop Size, 500/Bag
These Caplugs® Evergreen 3.5 mL disposable transfer pipets are made from low-density polyethylene (LDPE) and calibrated to deliver a 45 µL drop size, making them a reliable choice for routine specimen transfer and reagent dispensing in clinical and research laboratories. Supplied non-sterile in a 500/Bag bulk format, part number 230-1577-020 keeps high-volume workflows stocked without frequent reorder interruptions. LDPE construction provides the flexibility needed for complete sample expulsion and low sample retention across a broad range of clinical specimens and standard reagents.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 230-1577-020 |
| Volume | 3.5 mL |
| Transfer Pipet Type | Standard |
| Drop Size | 45 µL/drop |
| Graduations | None |
| Material | Low-Density Polyethylene (LDPE) |
| Color | Natural (Clear) |
| Sterility | Non-Sterile |
| Pack Size | 500/Bag |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- Clinical specimen transfer — urine, serum, plasma, whole blood, and CSF handling in urinalysis, chemistry, and hematology workflows
- Reagent dispensing for routine clinical chemistry and microbiology assays
- Serial dilutions and sample preparation where approximate 45 µL/drop volume delivery is acceptable
- High-volume disposable pipet supply in busy reference laboratories and hospital labs processing large daily specimen loads
- Single-use specimen handling in blood bank and clinical pathology to eliminate cross-contamination risk between samples
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Good |
| Isopropanol | Good |
| Acetonitrile | Good |
| Aromatic / chlorinated solvents | Not recommended — use with caution |
Quality & Procurement
Made in USA, these Caplugs® Evergreen transfer pipets are produced from BPA-free, phthalate-free LDPE resin with lot-level quality controls that ensure consistent pipet geometry, material integrity, and 45 µL drop-size calibration across every bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered pricing available for clinical labs, hospital systems, and institutions managing high-volume disposable supply needs.
Frequently Asked Questions
Are these transfer pipets sterile?
No — these pipets are supplied non-sterile. They are intended for routine specimen transfer and reagent dispensing applications where sterility is not required. If your protocol requires sterile transfer pipets, please contact us for sterile alternatives.
What does the 45 µL drop size mean in practice?
The 45 µL/drop calibration provides a semi-quantitative volume reference — each drop expelled from the tip delivers approximately 45 µL. This is useful for workflows that require consistent approximate volume delivery, such as adding drops of reagent or specimen, but it is not a substitute for graduated or precision pipetting when exact volumes are critical.
Why is LDPE a good material for clinical transfer pipets?
Low-density polyethylene is soft and flexible, which allows technicians to fully expel specimens with minimal residual volume left in the bulb. LDPE is also broadly compatible with aqueous clinical specimens — including urine, serum, plasma, and whole blood — as well as common laboratory buffers and dilute acids and bases, making it well suited to everyday clinical lab use.
How are these pipets packaged, and is the bag resealable?
Each order contains 500 pipets per bag. The bulk bag format is designed to support high-volume laboratory workflows and reduce per-unit cost. For specific packaging details such as resealability, please reach out to our customer service team before placing your order.