Tedlar PVF Gas Sampling Bag with PP valve, 5L, 3/16'' OD (4.76mm)

Spacer disc, alum, 1.5mm, for M-CTE120I,pk 24

Devex Gas sampling bags 5L, PP screw cap valve, 3/16'' OD (4.76mm)

VOC-Mole assembly, 380mm,pk10