• Optical determination of hydrogenperoxide covering concentrations

  from 0 to 80%

Hydrogenperoxide (H­₂O₂ ) is achromatic only in the visible wavelength range between 400 and 700 nm.Depending on the concentration absorption occurs in the adjacent colordomains; for a given concentration the absorption maximum will change its position with concentration and temperature. Partially some superposition will occur with the absorption of water. The water absorption is, however, known in its temperature behavior; it can be subtracted from the hydrogenperoxide absorption. In essence then a robust spectral analysis operation can be provided. Given other substances (agents) in the solution, and assuming that their concentration is known and to have an absorption similar to hydrogenperoxide, then they can be accounted for by a zero point calibration. The hydrogenperoxide concentration can no longer be accurately observed for agents in the solution that possess an absorption in the wavelength range of  hydrogenperoxide but vary over time in their concentration.