Slide-Fix™ PAP Jar Screw Caps — HDPE, Blue, Non-Sterile, 1000/Bag (300-3531-B20)
These Slide-Fix™ PAP jar screw caps are molded from high-density polyethylene (HDPE) and designed as replacement or spare closure caps for PAP jar cytology fixative containers commonly used in histology and cytology workflows. Supplied in blue for convenient color-coded identification, part number 300-3531-B20 is packed 1000 per bag to support high-volume laboratory procurement needs. The screw-cap design provides a secure, leak-resistant closure to help contain fixative solutions during specimen transport and storage.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-3531-B20 |
| Product Type | PAP Jar Screw Cap |
| Product Line | Slide-Fix™ |
| Material | High-Density Polyethylene (HDPE) |
| Color | Blue |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| Country of Origin | USA |
Applications
- Replacement closures for PAP jar cytology fixative containers in histology and cytology laboratories
- Color-coded cap organization to differentiate specimen batches or fixative types
- Secure containment of aqueous fixative solutions during specimen transport and storage
- High-volume clinical and anatomic pathology lab consumable stocking
- General laboratory container capping where a screw-thread HDPE closure is appropriate
Material & Chemical Resistance
High-density polyethylene offers excellent general chemical resistance, including good compatibility with aqueous solutions, dilute acids and bases, and many common laboratory fixatives and buffers. HDPE is rigid yet impact-resistant and provides reliable performance across a broad range of routine laboratory chemicals. Note that HDPE is not recommended for autoclaving; for solvent-heavy applications, verify compatibility with specific reagents before use.
Quality & Procurement
Made in USA, Caplugs® Evergreen Slide-Fix™ screw caps are manufactured under ISO 9001 quality management from BPA-free, phthalate-free, latex-free HDPE resin. LabSupplies.com is an authorized dealer and ships from USA inventory, typically same business day for stocking items, with tiered pricing available for institutional and high-volume laboratory accounts.
Frequently Asked Questions
Are these screw caps sterile?
No — they are supplied non-sterile in 1000/Bag bulk packaging, which is standard for cytology fixative jar closures used in routine histology and pathology workflows.
Are these caps compatible with fixative solutions typically used in PAP jars?
HDPE offers broad chemical resistance to aqueous fixative solutions and many common laboratory reagents, making it well suited for routine PAP jar closure applications. Always verify compatibility if using unusual or highly concentrated chemical fixatives.
Why are the caps blue?
The blue color supports color-coded organization in the laboratory, allowing staff to visually differentiate jar batches, fixative types, or specimen groups at a glance — a practical benefit in busy cytology and pathology departments.