Page 21 - WHITE BOOK

Graph #2 Shows there are levels of copper exceeding 1000 ppm while the iron concentration remainslowintherangeofsampleswithlessthan100ppmcopper. TheHerguthInductively Coupled Plasma (ICP) elemental analysis indicates that the zinc concentration correlates with copper concentration (Graph #2), but it doesn’ t necessarily show a correlation between a range of copper concentration and an increased iron content (Graph #3).
Given the unpredictable system parameters it would likely be misleading to attempt to use a copper or zinc concentration as a cutoff point for expenditure of antioxidants or system problems.
1200
1000
800
600
400
200
0
Copper vs. Zinc Trend
Lab No.
Zinc ppm
Copper ppm
Linear (Zinc ppm) Linear (Copper ppm)
.
GRAPH # 2
Data Sorted by Copper Levels....y axis = parts per million of indicated element
1200
1000
800
600
400
200
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Iron vs Copper and Zinc
Sample #
Copper
Iron
Zinc
GRAPH #3
Data Sorted by Mileage...y axis = 1,000 of Miles on System
101 Corporate Place Vallejo, CA 94590 800-645-5227 www.Herguth.com
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724681
724683
724685
724687
724689
724691
724693
724695
724697
724699
724700A
724701
724703
724697A 724696A
724699A 724683A
724688A 724689A
724682A
ppm
ppm