Introduction: Water activity is a parameter that characterizes the energy state of the water in the sample. By measuring the water activity of the sample, the stability of the sample and whether the growth of microorganisms is inhibited can be judged, so as to evaluate the safe shelf life of the product and evaluate the packaging material , To evaluate the product formula. The measurement principle of water activity: In a closed space, the ratio of the equilibrium vapor pressure of a sample to the saturated vapor pressure of pure water at the same temperature is the water activity of the sample, in aw. Application range of water activity: control microbial growth; calculate product shelf life; packaging method/material selection; adjust product formula; water migration/chemical reaction; Technical features: 5-inch touch screen, resolution 480*854 pixels Chinese interface, easy to operate Preheat samples in advance, saving testing time Using the fast balance method to quickly detect the water activity of the sample, Built-in Peltier, precise control of detection temperature Infrared temperature sensor measures sample temperature 2000 groups of test data can be stored Operator authority classification Multi-point calibration, 11 kinds of standard solutions can be used for full range calibration Detection accuracy: 0.005aw @25℃ Resolution: 0.001aw Temperature control accuracy: 0.2℃ Temperature resolution: 0.1℃ Size: length 34*width 23*height 17CM Weight: 4.7 kg
Introduction: Water activity is a parameter that characterizes the energy state of the water in the sample. By measuring the water activity of the sample, the stability of the sample and whether the growth of microorganisms is inhibited can be judged, so as to evaluate the safe shelf life of the product and evaluate the packaging material , To evaluate the product formula. The measurement principle of water activity: In a closed space, the ratio of the equilibrium vapor pressure of a sample to the saturated vapor pressure of pure water at the same temperature is the water activity of the sample, in aw. Application range of water activity: control microbial growth; calculate product shelf life; packaging method/material selection; adjust product formula; water migration/chemical reaction;
