... /KG, 0.06%≤PH3 content in acetylene max.,0.1%≤H2S content in acetylene max,7-15mm,Gas Yield≥290L/KG, 0 ... /KG, 0.06%≤PH3 content in acetylene max.0.1%≤H2S content in acetylene max.25-50mm or 50-80mmGas Yield≥295L ... /KG, 0.06%≤PH3 content in acetylene max.0.1%≤H2S content in acetylene max.Net in 100kg or 50kg new iron ... are stored in a dry,cool and ventilated place. High class Calcium Carbide