is the wavelength the photometer uses to measure the concentration of a substance in the sample.

The reagents on the test strip and the substance to test in the sample undergoing a chemical reaction causing a colour change.
This colour change is changing the intensity of a light beam the photometer is sending through the sample.
Out of this intensity change and the wave lenght the photometer can calculate the concentration of a substance in the sample.


eXact iDip Smart Photometer

iDip with Smartphone

The exciting eXact iDip Smart Photometer System  by ITS, Inc. harnesses the power of smart devices and the simplicity of design to handle the heavy lifting of complex water testing.

The smart phone app is designed to work seamlessly with the waterproofed handheld unit with parameter information, data storage and GPS tracking included.


Bottle with Nitrate testrips

The eXact Strip Micro Nitrate test strip comes in a bottle with 50 test strips.

Range: 0.25 - 32.0ppm (freshwater) 4 - 100ppm (marinewater)

Best Accuracy: ± 15%

Test Time: 20 seconds

Please pay attention to the manual. The test procedure is different for freshwater and saltwater!

eXact Chlorine Plus Photometer

eXact Chlorine Plus Photometer

The eXact® Chlorine Plus Photometer is the perfect tool for testing drinking water, pool water, spa water or process water.
Instead the 10ml sample other brands needing the eXact Chlorine Plus Photometer needs only 4ml. This is saving testing chemicals.

The eXact® Chlorine Plus Photometer test procedure for free chlorine, combined chlorine and total chlorine is compliant to USEPA, DIN 38408-G4 and ISO 7393/2. The test results are accepted by nearly all health departments.


Bottle with pH testrips

The eXact Strip Micro pH test strip comes in a bottle with 100 test strips.

Range: 6.0 – 8.5pH

Best Accuracy: ± 0.2pH

Test Time: 20 seconds