Summary for nickel thickness measurement Discussion
Nickel thickness measurement is the focus of this question about using an HQT-IA colorimetric thickness tester on nickel plating over brass. Haroldas Juknevicius asked whether the electrolyte should contain both reagents listed in the tester’s table—80 g NH4NO3 and 40 g NaSCN per liter—or whether only one should be used. The excerpted reply does not answer the technical question directly; it only notes interest in the method and says the responder has never heard of colorimetric thickness testing. Because no corrective guidance is given in the thread excerpt, the practical takeaway is that the user’s interpretation of the table remains unresolved here and would need confirmation from the tester instructions or manufacturer.
Q. Hello, I am measuring nickel plating on brass using HQT-IA colorimetric thickness tester. My question is what type of electrolyte should I use? Table provided with the tester states that 80g NH4NO3 and 40g NaSCN should be dissolved in 1 L solution. Do I dissolve both NH4NO3 and NaSCN in 1 L of distilled water? Or do I only choose 1 of the specified reagents for the measurement? Thank you in advance.
Haroldas Juknevicius
– Vilnius, Lithuania
January 19, 2022
January 2022
? Hi. This is interesting to me because I’ve never heard of colorimetric thickness testing.
Luck & Regards,

Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
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