supply of (1) empty gas cylinder of capacity 10 kgs. for storing of refrigerant gas r22 / r407c (2) empty gas cylinder of capacity 45 kgs. for storing of refrigerant gas r22 / r407c , empty gas cylinder of capacity 10 kgs. for storing of refrigerant gas r22 / r407c conforming to is:3196 (part 2) - 2006 and valve confirming to is : 3224 (latest). all cylinders shall be fitted with neck collar, valve, valve protection cap, valve operating key(for each cylinder) etc. note:- (1) test certificat e of each cylinder from nabl/govt. accredited lab to be submitted along with the material supplied. (2) all cylinders should be marked (engraved) with isi marked, cylinder number, cylinder capacity, type of gas and test date etc. are to be punched on the cylinder body. (3) cylinders must have laser qr code wit h following details as such type of gas,pressure rating, hydro test date, date of manufacturing, manufactures agency name,owner agency any other required [ warranty period: 30 months after the date of delivery ] ] , empty gas cylinder of capacity 45 kgs. for storing of refrigerant gas r22 / r407c conforming to is:3196 (part 2) - 2006 and valve confirming to is : 3224 (latest). all cylinders shall be fitted with neck collar, valve, valve protection cap, valve operating key(for each cylinder) etc. note:- (1) test certificat e of each cylinder from nabl/govt. accredited lab to be submitted along with the material supplied. (2) all cylinders should be marked (engraved) with isi marked, cylinder number, cylinder capacity, type of gas and test date etc. are to be punched on the cylinder body. (3) cylinders must have laser qr code wit h following details as such type of gas,pressure rating, hydro test date, date of manufacturing, manufactures agency name,owner agency any other required [ warranty period: 30 months after the date of delivery ] ]