Refilling Of Argon Gas (Uhp) Grade (Spectrographic Quality) Purity 99.999 Percent Mingrade 1 To Is: 5760/1998 Or Latest In 15 Cylinder Alogwith Purity Certificate.(7 Cu.M Gas Should Be Refilled In Each Cylinder) Nb: Maximum Two Empty Cylinders At A Time Must Be Collected From The Cmt Lab Kgpw And The Same To Be Returned After Refilling With Purity Certificate To The Cmt Lab Kgpw Within Thirty Days From The Date Of Intimation About The Availability Of Empty Argon Gas Cylinder