MW13 Includes Only:Two Sample Cuvettes and CapsSix powder reagents for Iodine1 x 1.5V AAA BatteryInstruction ManuaMW13 Iodine TesterThe Milwaukee MW13 Iodine Photometer lets you go digital with your testing. No more hit and miss testing with strips. Great for aquariums, labs, water conditioning, 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 ±0.1 ppm +/- 5% of reading at 25°C within minutes.Features:Fast, easy-to-read results with large digital LCD readout.Range from 0.0 to 12.5 ppm.Accurate to ±0.1 ppm or ±5% of reading at 25°C.Small and ergonomic design.No calibration needed.Reliable and repeatable measurements with no visual assessment.Adaptation of the Standard Methods for the Examination of Wastewater 18th edition DPD Method. The reaction between Iodine and the reagent causes a pink tint in the sample.Runs on 1 x AAA battery with auto shut off to extend battery life.