Color Disc for measuring Tannin Lignin, 0-15, 0-150 mg/L. Used in test kit Model TA-3, Prod. No. 193701.
Benefits
The most accurate visual test kit method, Hach color discs provide fast, accurate comparisons.
A product of decomposed plant material, tannin occurs in natural waters and is used for boiler and cooling tower water treatment, dyeing, ink manufacture, tanning, and paper sizing.
Lignin, also a plant product, is found in paper pulp manufacturing waste.
Tannin and lignin are analyzed together and reported as mg/L tannic acid.
