refilling of medical grade carbon dioxide gas 6, 9, 23 and 31 kgs. (w.c.) cylinders and refilling of medical grade nitrogen gas 47 liters (w.c.) at kem hospital. , miscellineous services , refilling charge for medical grade carbon dioxide gas cylinder capacity 31 k.g. , refilling charge for medical grade carbon dioxide gas cylinder capacity 23 k.g , refilling charge for medical grade carbon dioxide gas cylinder capacity 09 k.g. , refilling charge for medical grade carbon dioxide gas cylinder capacity 06 k.g. , refilling charge for medical grade nitrogen gas cylinder capacity 47 ltrs. , delivery charges(including pickup empty cylinders from hospital and delivery of refilled cylinders)