Interference filter increases reducibility
Only when interference filters are used is it possible to ensure that their analytical methods are reproducible. All Lovibond LED photometers use high-quality interference filters with a half-width of approx. 5 nm.
Reference beam technology for spectrophotometers
Using reference beam technology, the spectrophotometers achieve maximum accuracy in the visual and non-visual wavelength range. The light source according to the model and consists of a tungsten-halogen lamp in the XD 7000, while the XD 7500 is equipped with a xenon flash lamp.
The principle of photometry
When specific reagents are added, the water sample takes on a degree of coloration that is proportional to the concentration of the parameter being measured. The photometer measures this coloration.