Colorimeters

Biochrom WPA Colorimeter

Hach DR300 Pocket Colorimeter

Hach DR900 Multiparameter Portable Colorimeter

HANNA Ammonia High Range Checker HC (0.0 to 99.9 ppm)

HANNA Ammonia Low Range Checker HC (0.00 to 3.00 ppm)

HANNA Ammonia Medium Range Checker HC (0.00 to 9.99 ppm)