Slide-Fix™ PAP Jar Screw Caps — HDPE, Red, Non-Sterile, 1000/Bag (300-3531-R20)
These Slide-Fix™ PAP jar screw caps are molded from high-density polyethylene (HDPE) in a distinctive red color, designed as replacement or spare closures for standard PAP (Papanicolaou staining) jars used in histology and cytology workflows. Supplied non-sterile in bulk (1000/Bag), part number 300-3531-R20 is well suited for high-throughput staining labs that require reliable, color-coded jar management at scale.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-3531-R20 |
| Product Type | PAP Jar Screw Cap |
| Brand Line | Slide-Fix™ |
| Material | High-Density Polyethylene (HDPE) |
| Color | Red |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| Country of Origin | USA |
Applications
- Closing and sealing PAP staining jars during cytology and histology slide preparation
- Color-coded organization of fixative or staining solution jars across multiple staining runs
- Replacement caps for worn or misplaced closures on existing PAP jar inventories
- High-volume slide processing workflows requiring bulk cap availability
- General laboratory jar closure where a screw-cap HDPE closure is appropriate
Material & Chemical Resistance
High-density polyethylene (HDPE) provides good general chemical resistance to a broad range of aqueous solutions, dilute acids and bases, and many common laboratory reagents, making it a practical choice for PAP staining environments that routinely handle fixatives and staining solutions. HDPE is more rigid than low-density polyethylene and maintains its shape under normal handling conditions; however, HDPE is not recommended for autoclaving and may be affected by prolonged exposure to concentrated oxidizing acids or halogenated solvents.
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 — the caps are supplied non-sterile in 1000/Bag bulk packaging, which is standard for high-throughput histology and cytology staining applications where sterility is not a requirement.
What is the significance of the red color?
The red color supports color-coded organization of PAP staining jars, helping laboratory staff quickly distinguish between jars containing different solutions or at different stages of a staining protocol.
Are HDPE caps compatible with common PAP staining fixatives and reagents?
HDPE offers good general resistance to aqueous fixatives and many standard staining reagents. For concentrated oxidizing acids or halogenated solvents, compatibility should be verified before use, as these can degrade polyethylene over time.