3” Spin-Klin Battery 2016
Page 11 of 13
Cleaning Complex Deposits
If the composition of the deposit is not known, perform the following test:
Take 5 discs for the test.
Soak 2 discs in a 5% Sodium Hypochlorite Solution.
Preparation of the solution:
Pour 1 cup of water into a small container, then add 1 cup of Sodium
Hypochlorite (10% NaOCl)
Soak 2 discs in a 5% Hydrochloric Acid Solution.
Preparation of the solution:
Pour 2½ cups (= 500ml) of water into a small container, then add carefully
½ cup (= 100ml) of Hydrochloric Acid (30% HCl).
Keep one disc as a control.
Observe the cleaning process:
If one of the solutions removes all the deposit, clean the discs in that solution per the instructions above.
If neither solution removes the deposit completely, continue with the test procedure.
Remove the discs from both solutions, rinse them well with water and soak them in the second solution: put the
two discs, which have been in the Sodium Hypochlorite Solution, in the Hydrochloric Acid Solution, and the other
way around.
Check the cleaning process:
If one of the treatments removes all the deposit, clean all the discs following the same two-step procedure in the
exact same order. Rinse the discs well between the two cleaning processes.
If the deposit hasn’t been completely removed, send a set
of untreated discs to the laboratory for further
examination.
