Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: MBT71_1L Availability: In the manufacturer's stock Price on request - + Recommended C-HSINS2-4 Spacer for Agitator, to accommodate for 2mL vials, pk 4 Price on request C-TAD-01 Tube Adaptor, for connection of 1/4" tubes to 1/8" flexible tubing Price on request T-7CUS cust packed cold trap, TT24-7 Price on request