The SE220 probe is designed for use with the Milwaukee MW101 and MW102 PRO pH Meters. The SE220 probe makes pH testing easy and requires very little maintenance. Top features include: Double Junction The double junction design reduces risk of clogging. Gel filled Using a gel removes the need to maintain the electrolyte levels. Resin body The ULTEM resin body is highly durable, chemically resistant and protects against accidental damage, good for lab and general purpose applications. ULTEM while generally resistant, may not perform well in highly concentrated or strong alkaline environments. Care and Use Properly maintaining your pH probe will give you fast, accurate results for longer. Here are our top four tips. 1. Always store with the cap full of buffer or storage solution not water. 2. Clean your probe regularly by soaking in cleaning solution. 3. Calibrate after cleaning and/or storage before testing to adjust for changes in the pH probe sensor. 4. Gently stir the probe in the sample for a faster result. Specifications for Milwaukee MW600 PRO Body: ULTEM Resin Reference: Double, Ag/AgCl Junction: Cloth, single Electrolyte: Gel Range: 0-14 pH Tip Shape: Sphere Diameter: 0.5 inches Dimensions: 4.7 inches / 6.4 inches Operating Temperature: -5 to 70°C (23 to 158°F) MAX Pressure: 2 BAR Cable Length: 3.3 feet Connection: BNC