VWR volatile organic analysis vials cap and septa I-Chem™ Open-Top Septa Caps, 24-414mm, bonded Processed to meet EPA Performance Based Specifications for Volatile Organic Analysis Includes: Cap only Compatible with: For use with Aijiren Tech VOA Vials, bottles and jars. 297-2414 closures are compatible with loose septa Cat. Nos. 288