purchase of mustard cake , laying and jointing pvc pipe . heading , mustard cake physical quality: the material should be free from adulterants , insects , fungal infestation , rancid odour and urea . chemical quality: moisture maximum 10% crude protein+ crude fat minimum 40% on dm basis . note: mustard cake containing more than 12% moisture and less than 37% crude protein + crude fat on dm basis will not be accepted . the percentage cut will be imposed if the material is found below the prescribed specifications . , zinc sulphate ( monohydrate ) , plastering in c . m 1:5-12 mm thick with including cost and conveyance of all materials and including all labour charges etc complete