3.5 mL Long Stem Transfer Pipets — LDPE, Natural, 40 µL Drop Size, 400/Bag (230-1595-020)
These 3.5 mL long stem transfer pipets from Caplugs® Evergreen are constructed from flexible low-density polyethylene (LDPE) and supplied non-sterile in bulk (400/Bag) for high-volume clinical and research laboratory use. The extended long stem geometry reaches the bottom of deep specimen containers, narrow-bore tubes, and specimen cups, enabling complete aspiration with minimal residual volume. A calibrated 40 µL drop size provides a convenient semi-quantitative volume reference for routine liquid transfer workflows.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 230-1595-020 |
| Volume | 3.5 mL |
| Transfer Pipet Type | Long Stem |
| Drop Size | 40 µL/drop |
| Graduations | None |
| Material | Low-Density Polyethylene (LDPE) |
| Color | Natural (Clear) |
| Sterility | Non-Sterile |
| BPA / Phthalate Free | Yes |
| Pack Size | 400/Bag |
| Country of Origin | USA |
Applications
- Clinical specimen transfer from deep urine cups, narrow-bore tubes, and specimen collection vessels where standard-length pipets cannot reach the bottom
- Urinalysis sample preparation and aliquoting
- Serum, plasma, whole blood, CSF, and urine transfer in clinical chemistry and toxicology workflows
- Reagent and buffer dispensing in hematology and microbiology
- General liquid handling in research and biotech laboratories requiring complete sample expulsion with minimal residual volume
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Good |
| Isopropanol | Good |
| Acetonitrile | Good |
| Aromatic solvents (toluene, xylene, etc.) | Use with caution — verify compatibility before routine use |
Quality & Procurement
Made in USA, these Caplugs® Evergreen transfer pipets are produced from BPA-free, phthalate-free LDPE resin, supporting lot traceability requirements in CAP-, CLIA-, and ISO 15189-accredited laboratories. LabSupplies.com is an authorized dealer shipping from USA inventory, typically same business day for stocking items, with tiered pricing available for institutional, hospital, and grant-funded accounts purchasing at volume.
Frequently Asked Questions
Are these transfer pipets sterile?
No — they are supplied non-sterile in 400/Bag bulk packaging. For applications requiring sterile pipets, please contact us for sterile alternatives.
Why choose a long stem design over a standard transfer pipet?
The extended long stem tip reaches the bottom of deep specimen containers, narrow-neck tubes, and specimen collection cups where a standard-length transfer pipet cannot aspirate completely. This maximizes recovery from small or limited-volume specimens and reduces residual waste.
What does the 40 µL drop size mean in practice?
The 40 µL/drop calibration means each individual drop dispensed from the tip is approximately 40 µL, giving technicians a practical semi-quantitative reference for routine transfer and dispensing tasks without requiring additional measuring equipment.
Is LDPE compatible with the biological specimens routinely handled in a clinical lab?
Yes — LDPE is non-reactive with urine, serum, plasma, whole blood, CSF, and standard laboratory buffers and reagents. It is also flexible enough to allow complete sample expulsion, which minimizes sample retention and reduces waste. Aromatic or chlorinated solvents should be evaluated separately before use.