tender for non destructive testing penetrants, group i conforming to is 12889-1989 with non-aqueous wet developer. packing : each setcomprising three items in four cans in the ratio 1:1:2, the penetrant, penetrant remover and developer all in aerosol cans of 500 ml capacityeach. the material content in each aerosol can 80+/-3percent by volume and the ratio of the product to the propellant 3:1 +/- 3 percent. as perspecn. ratio 1:1:2 .
