Biotech Single & Double Valves Gas Sampling Bag 0.1l-15l Range Aluminum Foil Gas Sampling Bag

Specifications: material: aluminum foil; capacity: 0.1L-15L; size: 6*8cm to 40*50cm; Product Name: Aluminium foil gas sampling bag; color: silver/natural metal color; Material: plastic+Aluminium foil; Model: with single valve/double valves; Package: 100pcs/pack, 10packs/carton; Certificate: ISO9001, FDA