Photometric determination of AOX. • AOX determination is carried out in 3 steps: 1. Solid phase extraction with NANOSORB for AOX. 2. Decomposition of the concentrated adsorber medium. 3. Determination as chloride with reagent set NANOCOLOR® AOX 3. • Type: tube test 0-07. • Range: 0.1 - 3.0 mg/l AOX; 0.01 - 0.3 mg/l AOX. • Sufficient for: 20 determinations. • Sea water suitability: yes, with 200 ml of rinsing solution.