Item Description: calibration gas mixture at aluminium canister ( 0. 5 lt ) along with fine control needle, value containin g methane: 1000 ppm, ethane; 1000 ppm, ethylene: 1000 ppm, acetylene: 1000 ppm, hydrogen: 1000 ppm, ca rbon dioxide: 5000 ppm, carbon monoxide: 5000 ppm, nitrogen: balance. specification: filling pressure- 20 kg/ sq. cm, preparation tolerence- +/- 20 %, certificate accuracy- +/- 2 %, stability- 12 months. make:- spancan or e quivalent. [ warranty period: 30 months after the date of delivery ]

Kolkata, West Bengal, India