Apera Instruments, AI3153, LabSen 823 Professional 3-in-1 pH/Temp. Electrode for Milk, Cream, YogurtBacked by proprietary Swiss sensor technologies and materials, the LabSen 823 Combination pH/Temperature Electrode/Probe is designed for testing pH for dairy products such as milk, cream, yogurt, and other liquid food such as mayonnaise, jam, BBQ sauce, syrup, etc.Silver Ion Trap Reference System+Protelyte Electrolyte- The LabSen 823 pH/Temperature Electrode/Probe adopts a Silver Ion Trap reference system and Protelyte reference solution. On top of the Long-Life reference system, a silver ion trap is added to prevent the junction from being blocked or contaminated by proteins.LabSen unique blue hemispherical glass membrane- faster response time, better repeatability, and built tough, highly resistant to general impact (totally differentiates from the traditional fragile glass bulb membrane); and can be tested in high temperature samples (up to 225°F).Patented pH/Temperature combination structure- The temperature element is placed in an independent cavity under the pH glass membrane. With the built-in heat conducting medium, the temperature sensing speed can be increased by 40%, hence the response time and stability of the pH electrode are greatly improved.Compatible with Apera Instruments' meters such as PH700, SX823-B, MP511,PH800, and PC800. May NOT work with other brands' meters because the temperature unit might be incompatible.Features:Proprietary pH sensor technology and materials from SwitzerlandDesigned for milk and other liquid food that contain proteinsSilver Ion Trap Reference System + Protelyte reference solution, preventing the electrode being contaminated by proteinsPatented pH/Temperature combination structure, increasing the temperature respond time by 40% compared to conventional isolated built-in thermistorUnique LabSen hemispherical glass membrane, which has a faster response rate, better repeatability, and built tough.