UniClean 284
Electrolytical cleaner for zinc die castings, brass and copper
Version: 01
Doc.-No.: 5200
Page: 6 / 7
Released on:
Released by:
10.11.2011
BTT CSP
10. Analytical Instructions
Content of Uniclean 284 by Titration
Version: 01
Doc.-No.: A0001583-01
Principle: pH Titration
Reagents required*:
•
0.1 M Hydrochloric acid standard solution
•
0.1 % Bromocresol green indicator solution (ethanol)
•
DI water
Please follow the general regulations for hazardous materials in the Material safety
data sheets!
The analytical procedure is to be followed exactly.
Be sure to observe all local regulations concerning the permitted limits for
pollutants.
Procedure for potentiometric pH-Titration
•
2.0** ml of sample solution are given into a suitable beaker
•
the solution is filled up to approx. 100 mL with DI water and
•
is titrated with 0.1 M HCl standard solution via titration processor equipped with a pH-electrode to
determine the second EP.
Titration parameters:
Delay (starting conditions) 30 s
Signal drift 50 mV/min
Measurement point density 4 (medium)
Min. vol. increment 10µL
(Metrohm Tiamo settings “optimal”)
UniClean 284
Electrolytical cleaner for zinc die castings, brass and copper
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