❖ Test :- CO 2 Cylinder: Weight to know weight of cylinder dependent on category of cylinder and manufacturing nation we have different weight.- General Powder Cylinder: Look at indicator at green indication it is good at red indication no longer usable, if yellow indicator there is danger of explosion- AB Powder cylinder : Get solution of AB , put in a big glass , when there is foam 15 minutes later and foam does not dissolved it is good quality .
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