NKSSC-22-S 24 mm White PP Screw Cap With 15 mm Centre Hole And Natural PTFE/White Silicone Septa (CAT#: STEM-AL-0024-ZJF)

This product is a 24 mm screw closure for vial sealing and analytical sample access. It is configured as a white polypropylene cap with a 15 mm centre hole. The closure includes natural PTFE and white silicone septa. The centre-hole design allows direct needle access through the septa without removing the cap. The 24-414 thread format supports compatibility with suitable storage vials. The septa help protect samples from evaporation and contamination while allowing controlled penetration. The closure is intended for storage vial workflows requiring sealed access through a septum. This model is applicable to TOC-related methods and purge and trap techniques.

Closure Type: Screw closure
Thread Format: 24-414
Cap Size: 24 mm
Cap Material: Polypropylene (PP)
Cap Color: White
Top Design: Open top with 15 mm centre hole
Septa Material: Natural PTFE/white silicone
Septa Thickness: 3.0 mm
Septa Hardness: 45 Shore A
Application Method: TOC (EPA)
Technique: Purge and trap

Open-top structure for septa access
Polypropylene cap construction
Natural PTFE/white silicone septa configuration
Compatible with 24-414 storage vials
Supports needle penetration
Medium resealability after puncture
Helps reduce evaporation
Suitable for analytical vial workflows