J. P. Vyas and Co. Offers Moulded Polypropylene Gas Sampling Bulbs. J. P. Vyas and Co. Supplies Laboratory Instruments, Equipments, Fabricated Laboratory Glassware, Rare and Research Chemicals, Hospital Furnishings and allied Laboratory requirements. The Moulded Polypropylene Gas Sampling Bulbs have hemispherical ends for smooth gas flow and polypropylene stopcocks with free-turning. The Moulded Polypropylene Gas Sampling Bulbs has Ends accept of 6.4 to 9.5mm [1/4" to 3/8"] I.D tubing. The Moulded Polypropylene Gas Sampling Bulbs Tube body is 51mm [2"] O.D. X 222mm [8 3/4"] long.