Use Thermo Scientific™ Orion™ AQUAfast digestion tubes, reaction tubes and liquid reagents with Orion™ AQUAfast colorimeters and Thermo Scientific™ Orion™ AquaMate Vis and UV-Vis spectrophotometers. Digestion and reaction tubes contain the precise amount of reagent, are made of special optical glass and fit the Orion™ AQUAfast COD165 thermoreactor. Digestion tubes measure COD, total nitrogen and total phosphate. Reaction tubes measure ammonia, nitrate and phosphate. Liquid reagents mix quickly and easily in solution and measure fluoride (SPADN), hydrazine and pH.

• Changes in nutrient levels can alter the delicate balance in ecosystems and contaminate drinking water
• Tube tests make it easy to determine concentrations of species in samples
• Test method: Dichromate/H₂SO₄

Limited warranty period: Subject to all warranty requirements and exclusions set out in our Terms and Conditions of Sale, this product is warranted from the date we ship the product and for 90 days thereafter.

Disclaimer to internal research use restriction: Any restrictions on the purchaser to utilise the products for internal research purposes only does not apply to the products on the web pages associated with this statement.

Digestion tube tests and reaction tube tests are preprogramed in the Orion AQ3700 meter. Some of the listed tests have only liquid components, like our AC2009 SPADNS test for fluoride, and some have liquid and powder or liquid and tablet reagents.