Quick view Remove from Compare Compare Items Foil Gas Sampling Bag, 7" x 7" 1 L, CHROMSPEC, with Roberts Nickel Plated On/Off Valve with 1/4" Barbed Stem & Jaco Fitting with Septum SKU : TDPA0707RJS Log in for pricing Pending approval CHROMSPEC TDPA0707RJS Foil Gas Sampling Bag, 7" x 7" 1 L, CHROMSPEC, with Roberts Nickel Plated On/Off Valve with 1/4" Barbed Stem & Jaco Fitting with Septum