90 mm Wide-Mouth Specimen Container Screw Caps — Polypropylene Copolymer, White, 72/Bag (300-9090-W3K)
Designed as replacement or spare closures for wide-mouth specimen containers, these 90 mm diameter screw caps provide a secure, threaded seal on compatible wide-mouth jars and collection containers used throughout clinical, environmental, and research laboratories. Molded from polypropylene copolymer (PPC) and supplied non-sterile in convenient 72/Bag bulk packaging, 300-9090-W3K caps are well suited to high-volume procurement where consistent closure performance and chemical compatibility matter.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-9090-W3K |
| Style | Wide-Mouth Specimen Container Screw Cap |
| Diameter | 90 mm |
| Material | Polypropylene Copolymer (PPC) |
| Color | White |
| Sterility | Non-Sterile |
| Pack Size | 72/Bag |
| Country of Origin | USA |
Applications
- Replacing worn or missing closures on wide-mouth specimen collection jars
- Sealing bulk specimen containers during environmental or water-quality sampling
- Securing wide-mouth storage jars containing dry or liquid laboratory reagents
- Clinical and pathology specimen transport where a reliable threaded closure is required
- General laboratory storage requiring a chemically resistant, re-sealable cap
Material & Chemical Resistance
Polypropylene copolymer (PPC) offers excellent resistance to aqueous solutions, dilute acids and bases, and common alcohols, making it a reliable choice for a broad range of specimen and reagent containment applications. PPC is autoclavable, allowing caps to be heat-sterilized when downstream workflows require it, even though they are supplied non-sterile. As with all polypropylene-family materials, prolonged contact with chlorinated solvents, aromatic hydrocarbons, or concentrated oxidizing acids should be avoided.
Quality & Procurement
Made in USA, Caplugs® Evergreen specimen container screw caps are produced under ISO 9001 quality management from BPA-free, phthalate-free, latex-free polypropylene copolymer 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, clinical, and grant-funded laboratories.
Frequently Asked Questions
Are these screw caps sterile?
No — they are supplied non-sterile in 72/Bag bulk packaging. However, because they are molded from polypropylene copolymer, they can be autoclaved prior to use if your workflow requires sterile closures.
How do I confirm these caps will fit my specimen containers?
These caps have a 90 mm diameter and are designed for wide-mouth screw-top specimen containers with a matching 90 mm threaded opening. Verify the thread diameter and pitch of your containers before ordering to ensure compatibility.
What chemicals are compatible with polypropylene copolymer caps?
PPC performs well with aqueous samples, dilute acids and bases, and alcohols. Avoid chlorinated solvents, aromatic hydrocarbons, and concentrated oxidizing agents, which can degrade polypropylene copolymer over time.