COD Colorimetric Tubes, 0-5-10-13-20-50-100 mg/L (CAT#: STEM-AL-3989-ZJF)

COD Colorimetric Tubes is designed for rapid colorimetric screening of chemical oxygen demand in water samples. The sealed tube contains the reagents required for the stated test procedure. Sample is drawn or added to the tube according to the supplied method. Color development is compared with a reference chart to obtain a concentration interval. The semi-quantitative format provides a rapid result without a separate analytical instrument. Individual tube construction supports transport and field operation. The documented reaction time and sample pH conditions should be observed. Sealed packaging helps preserve reagent integrity during storage. The product supports preliminary water-quality assessment across the stated range.

Measured Parameter: chemical oxygen demand
Detection Range: 0-5-10-13-20-50-100 mg/L
Package: 50 tests/box
Shelf Life: 12 months
Storage: Ambient temperature in a dark, dry place

Preloaded colorimetric tube format
Visual comparison with a reference chart
Rapid semi-quantitative result
No separate analytical instrument required
Compact tubes support field use
Sealed packaging protects reagents
Defined concentration intervals simplify screening