Tender For supply of nitric acid technical grade conforming to is: 264 in 25 kg packing in non returnable carbouys , sodiumhydroxideflakes (caustic soda flakes) as per is: 252- 73, sodiumhydroxide (as naoh) 95% min i , sodium dichromate conforming to is: 249 in 5kg packing , hydroflouric acid 40% min ar grade aqueous as per is - 10332