![]() Viscosity η, the value in milliseconds (mPa Firstly put the rotor of the viscometer into the sample solution and then start the viscometer, rotating for 1 min, when the display value is stable, read the viscosity.ĭirect reading, that is, the viscosity of the sample value. Use the Viscometer LVT to test the Viscosity. Take out of the thermostatic waterbath and stir by hand for 10s.Ĩ). Move off the blender and put the glass bottle into thermostatic waterbath(25℃士0.2℃) for 1 hour.ħ). If the sample is not dissolved completely, continue to stir for 0.5 hour.Ħ). Start stirring and add the test sample slowly, adjust the speed to 900 r/min士100r./min, stirring for 2 hours.ĥ). Put the blender into glass bottle, mixing blade is about 10mm far from the bottom of the cup.Ĥ). Add 495g of 1% solution or 490g of 2% solution water into glass bottle.ģ). Weigh about 5g sample of 1% solution or 10g sample of 2% solution, accurate to 1mg.Ģ). Blender: stainless steel or glass (see the following picture), under the different load connected in a to 900 r/min and 100 r/min variable speed motor rotation.ġ). The diameter of the top is the same as the diameter of end, volume is 500mL.Ĥ). Glass cup: diameter is about 90mm, height is about 120mm. Rotary viscosimeter: Numerical rotary viscosimeter or pointer rotary viscosimeter.Ģ). Eg: Hoppler viscometer, Brookfield LVT, DVT viscometer, NDJ-79 viscometer, etc. Besides, if you have special requests, we can also do test based on your suggestion. Normally, lower viscosity CMC is measured in 4% or 10% solution Middle and high viscosity ismeasured in 1% or 2% solution. Viscosity can be measured in 1%, 2%, 4% and 10% aqueous solutions based on customer production requests. Viscosity is the most critical index of food grade CMC, so we would like to introduce the testing method of food grade Sodium CMC here. Sodium Carboxymethyl Cellulose(SCMC) is one type of most popular thickener, emulsifier and is widely used in various types of foods, such as ketchup, mayonnaise, yogurt and milk, etc.
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