Lovibond Tintometer MD 100 Manual De Instrucciones página 90

Chemical Method
Zincon / EDTA
Appendix
Interferences
Removeable Interferences
• Cationics such as quaternary ammonium compounds will cause the colour to change
from rose red to purple, depending upon the level of copper present. In this event
add drops of KS89 (cationic suppressor) one at a time, until it turns orange/blue.
Note: After adding each drop, swirl the vial.
Bibliography
Photometrische Analyseverfahren, Schwedt, Wissenschaftliche Verlagsgesellschaft
mbH, Stuttgart 1989
S.M. Khopkar, Basic Concepts of Analytical Chemistry (2004), New Age International
Ltd. Publishers, New Dheli, p. 75
EN Method Reference Book 1.0
Zinc L / M405
EN
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