bids are invited for specific gravity and water absorption of aggregates , slum cone test with tamping rod , compaction factor test appratus of concrete , non destructive test on concrete , weight mechanical analysis using pipette method for clay and silt , determanation of liquid limit device with grooving tools casagrande apparatus , penetration test of bitumen , viscosity test of bitumen , determination of turbidity of water sample using turbidity nephelometer jackson candle turbidimeter , determination of ph of water sample ph meter colour comparator , determination of chloride content of water sample using method of titration , determination of coagulant alum dose requirement for a turbid water sample by jar test , determination of dissolved oxygen in a water sample , determination of b.o.d of waste water sample by coliform test , concrete cube mould