Determining the true color units (CU) where 1 CU equals 1ppm of platinum
Method Abstract #121
Scope and Application
This method conforms to Standard Method 2120 C and EPA Method 110.2. It determines the true color units (CU) where 1 CU equals 1ppm of platinum. Color (or True Color) is used as a general indicator of the quality of water.
Method Summary
This method employs an industry leading spectrophotometer completely controlled by the MANTECH software including automated calibrations and audit trail. In general, 410nm is the selected wavelength; however, additional wavelengths may be used such as 455, 410 and 440 all while the sample is in the cuvette.
Sample Calibration Curve
Method Performance
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