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Have two model,one have print function and the other one have no print function.Can test amylase activity in grain and judge sprout degree of injury.According to GB/T103612008,the accuracy is high. .In particular wheat flour test. It is the necessary quality examination instrument in grain stores, domain, bread flour processing, food processing and so on.
Grain dust(such as wheat flour) suspension paste in boiling water bath.Because alphaamylase activity is different,the starch in pasting is liquidfied in various degree.The liquidfied degree is different, pasting falling speed is different.The falling number indicate the difference of alphaamylase activity.If the falling number is lower,the alpha-amylase activity is higher.