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 M-SPFSC-250 SPF Sample Cutter and Mat, for high temp Micro-chamber Price on request C-VAC-FULL-ARR-KI Vacuum SPME Arrow Full Starter Kit Price on request P-00030 VOC-Mole assembly, 830mm,pk10 Price on request