METGUARD 21- Multipurpose Protector

It is a multipurpose electrolytic passivating bath for Silver, Tin, Brass, Copper & Nickel which deposits a transparent, colorless inorganic protective coating on silver and silver & tin electroplate.


  • Replacement of Carcinogenic Hexavalent Chrome (Silchrome) process
  • RoHS/Reach compliance
  • Protects against atmosphere containing Hydrogen sulfide and prevents the darkening of the metal
  • No appreciable effect on the solderability and electrical conductivity of Silver and Tin.
  • No effect of heat treatment > 150 deg. cent.

Growel Advantage

  • Multipurpose Protector for Silver, Tin, Nickel, Copper, and copper alloy


Our recommendations are made in good faith and are based on our skills. However , since the conditions of use of these products are beyond our control, this information is given on the express condition and agreement that Grauer & Weil (India) Limited, will not be liable to any person by reason thereof. Nothing herein shall be deemed to be a recommendation to use any product in violation of any existing patent rights.