3. PRECESSION TEST FOR UNIFORMITY OF COATING (IS:2633) :

In this instance the sample piece is subjected to dipping in Copper Sulphate

Solution four times and each dipping will be of one-minute duration.

After the fourth dip, the sample is checked for any red coloration on the surface. Cooper deposition takes place in areas where coating is not uniform.

4. PURITY OF ZINC / ALUMINIUM : We are getting Zinc/Aluminium wire tested in an external lab to ascertain the purity of Zinc, which should be 99.95% as per IS: 209. A certificate to this effect can be provided to the customer along with our test certificate if desired