Quick tests for photometric analysis. Reagents and additional reagents are precisely pre-dosed for optimum accuracy and correctness of measured results. Convenient, safe removal of round cuvettes (external Ø 16 mm) from the stable box with coloured pictograms providing step-by-step instructions on the cover. Batch-specific information can be accessed via a 2D bar code on the reverse of the packaging. For example, NANOCOLOR ® round cuvette tests are suitable for use with the PF12 Plus photometer. Round cuvette test NANOCOLOR ® AOX 3 Required for determining block thermostat (e.g. NANOCOLOR ® VARIO Mini, Art. No. KEX3.1). An extension kit (Art. No. 39H9.1) is required for higher COD loads (>50 mg/l) or for a more precise AOX measuring range (0.01-0.30 mg/l).