procurement of a double stage regulator for carrier gas cylinder for the gas chromatograph at hurl gorakhpur , double stage regulator for carrier gas cylinder for the gas chromatograph , pressure reducing regulator-non hydrocar , pressure reducing regulator- hydrocarbon , auto-change over regulator , flexible hoses pipe of 1mt length with s , flexible hoses pipe of 1mt length with s , manual gas change over regulator-complet , sulfinert regulator dual stage cga 660 , regulator dual stage for acetylene , regulator dual stage for nitrous oxide , regulator dual stage for argon , regulator dual stage for oxygen , 1/4 ball valve with tube fittings , 1/4 ball valve with female fitting , 1/4 three way ball valve with tube fitt , 1/4 bsp m / f check valve , 1/4 bsp f check valve . , standard fittings like nuts, ferrules, u