Appendix 4: Vehicle Use List

(presented by Hach, 1988) Hach Endpoint Color Alkalinity ~ 30 mg/L pH 4.9 pH 5.1 Light greenish blue-gray Alkalinity ~ 150 mg/L pH 4.6 pH 4.8 Light violet-gray Alkalinity ~ 500 mg/L pH 4.3 pH 4.5 Light pink Silicates or phosphates present pH 4.5 pH 4.5 Light pink 1.10 Sample Collection ................
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