The food safety control system (Hazard Analysis and Critical Control Point, HACCP) is a system that manages the acceptance, processing, manufacturing, storage and transportation of food raw materials. It is used to prevent and control food safety hazards. It is currently generally recognized as the best system in the world. food safety control methods.
A salinity meter typically measures salinity levels using conductivity, an assessment of the concentration of ions in a substance. You can calculate the amount of ions in a sample based on its ability to conduct electrical current in a specific area. The measurement involves conducting an electric current between two electrodes in the substance to be tested. The more ions there are, the higher the conductivity, and vice versa.
The salinity meter is equipped with sensors, measurement circuits and data processing devices, which can directly convert and process the measured data, and present the salinity content directly to the user, who can read the data directly on the panel.
Clean the refractometer lens surface. Use a dropper to draw about 2 to 3 ml of liquid and put it on the lens. Turn on the spotlight, drip seawater onto the eyepiece, and then gently cover the spotlight. Align the refractometer's focus plate toward the light source, keeping the eyepieces close to and parallel to your eyes. Observe the scale on the refractometer through the observation window and record the test value.
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