The future has arrived: Optical reagent-free measurement of COD, nitrate and nitrite (OptRF)

• Faster than the fastest digestion
• No costs, as no reagents or chemicals are required
• Environmentally friendly and no health hazards

For the standard parameters COD, nitrate, and nitrite, a spectrum in the UV range is evaluated using complex algorithms based on reference spectra. The result is put out directly as a concentration reading, without the use of reagents. No potassium dichromate, no digestion – for quick testing. The composition of the water is very important for this calculation, since water is not equal to water.

The OptRF methods are currently being developed for sewage plant outlets. They can be optimised for the respective municipal wastewater matrix by user calibration via reference values performed with standard procedures like test kits. Depending on the composition of surface waters, the methods can be used here as well after testing and verifying with reference procedures. Being lightweight and powered by a car battery, photoLab® 7600 UV-VIS can be operated On-site easily.

UVT and SAC

For the UV-Disinfection as well as for monitoring of organic pollution, these two parameters constantly gain importance: 5 programs with and without turbidity correction are offered. You will find all important information about SAC in the following article as part of the photometry dictionary: b  “SAC is not equal to SAC”.

Well-proven routine analysis and wide-ranging application support

Simple measuring: WTW PhotoLab 7100 VIS from 190 – 1100 nm supports the fastest and affordable routine analytics by using barcoded test kits and round and rectangular cuvettes, just like the VIS version photoLab® 7100. More than 250 methods are available for water analytics, galvanics and general lab analytics.

Environmental parameters, such as chlorophyll, and application procedures for the food and beverage industry are supported by programmed methods and comprehensive programming options. With its multi-wavelength, spectral and kinetic measurements, this meter is suitable for mixed applications as well as research.

PhotoLab® colour: Colour measurement instead of colour perception

The PC software PhotoLab® Colour + Data spectral offers comprehensive colour measurement and convenient data management.

IQ LabLink

IQ LabLink provides an outstanding connection between IQ Sensor Net and lab measurement, ensuring top measurement reliability. Measurement data from IQ Sensor Net sensors (VARiON) can be transferred directly via USB stick into photoLab 7600 UV-VIS and back, eliminating cable tangles and ensuring faultless operation thanks to sensor identification.