Features:Fast easy to read results with large duel level digital LCD readout.Extreme accuracy to ±0.01 pH / +/- 0.2 mv / +/- 1 mV / ISE +/-0.5% Full Scale / +/-0.4°C (+/-0.8°F). Extended range (-2.00 pH to 16.00 pH).Lightweight and small bench footprint.ISE calibration up to 2 points.Easy measurement: just place the pH electrode and temp. probe in the sample, gently stir and wait for the reading to stabilize.Simple push button, automatic up to 3 point pH calibration for increased accuracy.Up to 7 selectable pH calibration buffers (4.01, 6.86, 7.01, 9.18, 10.01 and 12.45).Refillable, double junction, lab grade pH electrode for low maintenance and high performance with a screw on cap to ensure proper storage.Automatic Temperature compensation (ATC). Logging-on-Demand feature up to 50 samples per parameter.Alphanumeric LCD display messages for friendly, intuitive information, warnings and error messagesInternal clock date to keep track of different time-dependent functions (calibration, timestamp,calibration time out).Dedicated GLP key function.3 feet probe cables for extra flexibility when testingThe Milwaukee MW160 4-in-1 MAX pH/OPR/ISE/Temp. Logging Bench Meter has won fans around the world with its reliable, fast, simple operation as well as a tough, sleek, lightweight design with a small lab space footprint. It is cccurate to ±0.01 pH with automatic or manual temperature compensation, and built in dedicated GLP key. In addition, up to 3-point automatic calibration and 7 selectable buffer standards makes the MW160 MAX ideal for use by brewers, wine makers, growers, labs, food processing, water treatment and many other applications with challenging pH measurement needs.The Milwaukee MW160 4-in-1 MAX pH/ORP/ISE/Temp Logging Bench Meter is preferred by people testing all types of samples viscus or not, in a variety of applications that cause other pH meters and electrodes to fail. The MA917B/1 Milwaukee double junction electrode is refillable and easy to clean. From brewers and wine makers to hydroponic growers, labs and water treatment, the MW160 MAX is your Bench Meter for fast, accurate readings.People choose the MW160 4-in-1 MAX pH/ORP/ISE/Temp Logging Meter to improve the accuracy of their testing program. With up to 3 point calibration and 7 standard buffer choices, the meter can be quickly calibrated to a higher accuracy compared with 1 or 2 point calibration. The MW160 MAX meter is accurate to ±0.01 pH. 5x more accurate than some alternative meters. Have a need to read ISE? The MW160 MAX has a simple BNC connection for any parameter.The MW160 MAX pH/OPR/ISE/Temp Logging Bench Meter comes with the Milwaukee refillable glass MA917B/1 pH electrode and has a BNC connector allowing easy interchange to any pH Milwaukee electrode. This is Milwaukee's top selling lab grade electrode for a reason. Designed to be both low maintenance (refillable) and able to withstand more challenging samples (double junction). The MA917B/1 is ideal for use in beer making, winemaking and hydroponics, environmental labs and many other applications. Have a need for an ISE application? Quickly connect the ISE BNC to the meter and off you go.The reference junction is a small hole that allows the meter to compare the sample to a reference. The reading is generated based on the electrical difference between the sample and reference. If the junction hole gets clogged, the pH electrode will no longer function.To minimize clogging the pH probe needs to be kept hydrated. Long periods of dry storage will damage the sensitivity of the probe. Allowing the probe to dry out may also result in the junction hole getting clogged. Storing in pH probe storage solution MA9015 or pH calibration buffers will help address both these issues. Do not store in tap water or DI water. This will damage the sensitivity of the probe. The best way to store the probe is with the probe's cap filled with storage solution or calibration buffer and the cap tightened to prevent leakage. It is also recommended that to store the electrode upright to further reduce the potential for leakage.