12 mm Plug Caps, Clear PE — Test Tube Closure, 1000/Case | Globe Scientific

12 mm Clear Plug Caps for Test & Culture Tubes — 1000/Case

These 12 mm Clear Plug Caps from Globe Scientific deliver a secure push-in seal for standard 12 mm laboratory test and culture tubes. Ideal for sample storage, short-term specimen transport, and routine culture work, the snug-fit design reduces evaporation and contamination during handling and incubation.

Technical Specifications

Available Options

Applications

• Sealing 12 mm test tubes for sample storage
• Capping culture tubes during incubation and transport
• Reducing evaporation in short-term specimen holding
• Minimizing airborne contamination of open tubes
• Routine microbiology and general bench workflows
• Temporary closure of aliquoted reagents in 12 mm tubes

Quality & Procurement

Order through labsupplies.com, an authorized Globe Scientific dealer shipping from US inventory. Each case carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available on request for higher-volume purchasing.

Frequently Asked Questions

What tube diameter do these caps fit?

They are designed as a push-in plug for tubes with a 12 mm outer rim, giving a snug interference fit on standard 12 mm test and culture tubes.

Are these caps sterile?

No. The 12 mm plug caps are supplied non-sterile. If sterility is required, validate an autoclave or alternative sterilization protocol appropriate for polyethylene before use.

How many caps come in a pack?

SKU 118139C is sold as a case of 1000 caps at $39.20 per case, making it suitable for high-throughput labs that close many tubes daily.

What material are the caps made from?

The caps are molded from polyethylene, a flexible plastic that conforms to the tube rim for a reliable push-in seal while remaining easy to remove and reseat.