2019/09/20 · September 20, 2019. Sarah Brudenell. The DR900 by Hach is a robust, portable colorimeter, capable of performing many dozens of different tests, supporting the Hach chemistry type. It can accept a number of different sizes cuvettes/samples cells –. 1 inch round sample cells. 1cm sample cells. 16mm COD/TNT vials. Hach DR900 colorimeter.
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