3.5 mL Fine Tip Transfer Pipets — LDPE, Natural, 20 µL Drop, Non-Sterile, 500/Bag (230-1590-020)
These 3.5 mL fine tip transfer pipets feature a narrow-bore orifice that delivers a controlled 20 µL drop, making them the preferred choice for precision spot dispensing, slide preparation, and reagent application in clinical and research workflows. Constructed from flexible low-density polyethylene (LDPE), the soft body allows complete sample expulsion with minimal residual retention. Part number 230-1590-020 is supplied non-sterile in a bulk 500/Bag format to support high-throughput laboratory operations.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 230-1590-020 |
| Volume Capacity | 3.5 mL |
| Tip Style | Fine Tip |
| Drop Size | 20 µL/drop |
| Graduations | None |
| Material | Low-Density Polyethylene (LDPE) |
| Color | Natural (Clear) |
| Sterility | Non-Sterile |
| BPA / Phthalate Free | Yes |
| Pack Size | 500/Bag |
| Country of Origin | USA |
Applications
- Cytology and hematology slide preparation — controlled 20 µL drop placement minimizes specimen spreading errors
- Urinalysis specimen transfer and reagent dispensing onto dipstick or microscopy slides
- Microbiology reagent dot application and spot inoculation workflows
- Serum, plasma, whole blood, urine, and CSF specimen transfer in clinical chemistry
- General liquid handling tasks requiring a fine-bore, low-retention disposable pipet
- High-volume clinical labs needing a cost-effective bulk supply of single-use transfer pipets
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 manufactured from BPA-free, phthalate-free LDPE resin. LabSupplies.com is an authorized dealer carrying USA inventory, with same-business-day shipping available for stocking items and tiered volume pricing for clinical laboratories, hospitals, and research institutions with recurring consumable needs.
Frequently Asked Questions
Are these transfer pipets sterile?
No — they are supplied non-sterile and are intended for general clinical and laboratory specimen transfer applications where sterility is not required. If your protocol requires sterile pipets, please contact us about sterile transfer pipet options.
What makes a fine tip different from a standard transfer pipet tip?
The narrow-bore fine tip orifice produces a smaller, more controlled drop — calibrated at 20 µL per drop — compared to the larger drops delivered by standard-bore transfer pipets. This makes fine tip pipets particularly well suited for slide preparation, spot dispensing, and any workflow where drop size consistency affects specimen or assay quality.
Can LDPE pipets be used with biological specimens such as urine, blood, or CSF?
Yes. LDPE is non-reactive with the full range of common clinical specimens — including urine, serum, plasma, whole blood, and cerebrospinal fluid — as well as standard laboratory buffers and dilute reagents. For organic solvents such as aromatic or chlorinated compounds, a different material may be more appropriate.
How many pipets come in a bag, and is bulk pricing available?
Each bag contains 500 pipets. LabSupplies.com offers tiered pricing for high-volume and institutional purchasers; contact our team for quotes on multi-bag or standing-order arrangements.