supply of product name helium gas grade uhp hsn code 28042910 purity >99.999 other impurities oxygen:<2ppm, moisture: <2 ppm, thc: < 0.5 ppm, co and co2:<0.5ppm capacity 47 litre w.c cylinder gas content 7.00 cum test certificate required 2 product name argon gas grade uhp grade hsn code 28042100 purity >99.999 other impurities oxygen:<2ppm, nitrogen:<2ppm capacity 47 litre w.c cylinder gas content 7.00 cum test certificate required
