Quick and easy determination of active oxygen. Features: • This test strip is for the fast and easy determination of active oxygen or potassium monopersulfate (MPS) respectively, e.g. in swimming pools. The easy Dip & Read procedure provides reliable results within 30 seconds. • So-called active oxygen is used in swimming pools as an alternative to chlorine for disinfection purposes. Therefore MPS is often added to the water. • The respective content can be easily determined with the test strip to assure a safe disinfection. Specifications. • Type: Semi-quantitative test strip • Presentation: Tube of 100 test strips • Color reaction: yellow → green • Gradation: 0 · 4 · 8 · 15 · 25 mg/L KMPS • REF: 91349