Standard portable meters with no frills! Milwaukees durable meters for quick and reliable measurements. Milwaukees Standard meters are manufactured to be easy to use, practical and accurate. Ideal for the classroom, laboratory or for general field use. MW101 performs pH measurements with a 0.01 pH resolution and with manual temperature compensation. The meter is supplied with pH electrode and calibration solutions. MW101 is supplied complete with a SE220 pH electrode, pH 7.01 20 mL sachet of calibration solution, calibration screwdriver, 9V battery and instructions.