MW10 Includes Only:Two Sample Cuvettes and CapsSix powder reagents for Free Chlorine1 x 1.5V AAA BatteryInstruction ManualMW10 Chlorine PhotometerThe Milwaukee MW10 Free Chlorine Photometer lets you go digital with your testing. No more hit and miss testing with strips. Great for agriculture, aquariums, aquaculture & coral, labs, water treatment, classroom and more. This meter is also ideal for educators that want their students to learn the basics of water quality analysis to apply in the real world.Simply add the reagent and get a digital reading accurate to ±0.03 ppm within minutes.Features: Fast, easy-to-read results with large digital LCD readout.Range from 0.00 to 2.50 ppm.Accurate to ±0.03 ppm or ±3% of reading at 25 °C.Small and ergonomic design.No calibration needed.Reliable and repeatable measurements with no visual assessment.Runs on 1 x AAA battery with auto shut off to extend battery life.Adaptation of the USEPA Method 330.5. The reaction between Free Clorine and DPD causes a slight pink tint in the sample.