Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: HEDMBT71_1L Availability: In the manufacturer's stock Price on request - + Recommended T-8MAT Materials emissions cold trap, TT24-7 Price on request SERLFP-5003 Spare back pressure adapter, ACTI-VOC Price on request 1235 BALLOONS FOR GAS SAMPLING, 8Liters Price on request