... of calcium for you. Specification: 1).Gas yield: 280L/KG,290L/KG,295L/KG2).Sizes:4-7mm;7-15mm;15-25mm;25 ... new iron drums without pallets 4-7mm Gas Yield≥280L/KG, 0.06%≤PH3 content in acetylene max.,0.1%≤H2S ... content in acetylene max, 7-15mm,Gas Yield≥290L/KG, 0.06%≤PH3 content in acetylene max.0.1%≤ ... H2S content in acetylene max. 15-25mm,Gas Yield≥290L/KG, 0.06%≤PH3 content in acetylene max.0.1%≤H2S ...