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-13PAM Focusing trap, Photochemical Assessment Monitoring Stations (PAMS), for TT24-7 Price on request U-ULKIT TD automation/ULTRA-xr starter kit Price on request M-DSK15-120 Spacer disc, alum, 1.5mm, for M-CTE120I,pk 24 Price on request