Colorimeters & Photometers

YSI 9500 Photometer YSI 9500 Photometer

Colorimeters allow you to easily take readings directly in the field for multiple parameters. YSI offers tablet, powder and liquid reagents. Several YSI reagents follow EPA approved methods. Our powder pack reagents are also 37% larger than other brands and the easy to open pouches have a pre-tear notch. In addition, they have angled corners so no reagent stays in the pouch. Some of the reagents can also be used in other manufacturer's instruments.

The pHotoFlex line of colorimeters is the newest addition to Xylem's full range of colorimeters. These rugged, waterproof, multiparameter colorimeters are ideal for laboratory and field testing. If you are interested in measuring chlorine or COD only, you might be interested in our single parameter colorimeters, YSI 900 Chlorine Colorimeter and YSI 910 COD.

  • Colorimeters
  • Photometers
  • Spectrophotometers
910 COD Colorimeter

YSI 910 COD Colorimeter

The YSI 910 COD (Chemical Oxygen Demand) Colorimeter is ideal for any application. This portable instrument allows you to easily take readings for COD.

YSI 900 Chlorine Colorimeter

YSI 900 Chlorine Colorimeter

The YSI 900 Free and Total chlorine colorimeter is ideal for any application. This portable instrument allows you to easily take readings directly in the field or lab.

YSI 9500 Photometer

YSI 9300 + 9500 Photometer

The YSI 9300 and YSI 9500 are economical photometers in small packages for any application. These portable photometers allow you to easily take readings directly in the field for 100+ parameters.

WTW photoLab® 7600 UV-VIS

WTW photoLab® 7100 (VIS) & PhotoLab 7600 (UV/VIS) Spectrophotometers

The spectrophotometers photoLab® 7100 VIS and photoLab® 7600 UV-VIS combine routine analysis with spectral analysis and pioneering procedure OptRF.
The new reference beam optics together with a new brilliant colour display turn hard work into fun: clearly-arranged, color-coded, fast and comfortable.