3 Analysis Sample
3.1 the aqueous solution in each part, add milk 0.0001 M of acid 3 - hydroxy - 2 - แนฟทาลี Inca carboxylic herb A large enough shake for 10 minutes. To achieve completely
3 complexes.2 adjust the pH in the range 4.50 edge 0.05 using 0.1 M of acetic / buffer acetate 1 ml, and adjust the volume with water DI to volume 25.00 ml
3.3 take a sample of milk powder and milk sterilization Wright 7 parts. To measure the light intensity by the machine full auto โรมิ. λ. Excitation 366 nm and emission 460 nm
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