Mechatest Liquid Sampling Solutions - GC VIAL Liquid samplers. Liquid bottle sampler GC VIAL configuration, closed loop sampling with needles, cap and septa principle, sample volumes 50 - 1000 cc.Bottle liquid process samplers, Spot Grab sampling Systems, Liquid samplers for bottle neck and cap GL32, GL45, 28 mm and 36 mm Dopak bottles.Total sampling solutions TSS, Sampling Systems