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4、/IDF , -. ISO 6731/IDF 21 IDF 21B:1987. ISO 6731/IDF 212012 1 , ( ) Milk, cream and evaporated milk. Determination of total solids content. (Reference method) 1 201401011 , . 2 - . 2.1 (total solids content): , - , . . - , 1 , - . (), - () . , , , , . 3 (102 2) C. 4 , . . 4.1 . 4.2 , (, ). 4.3 , . 4
5、4 , , , - (102 2) C . 4.5 , 20 25 , 50 75 , ( , ), . 1 ISO 6731/IDF 212012 2 4.6 4.6.1 , 35 C 40 C. 4.6.2 , 40 C 60 C. 4.7 (; . 6.1). 5 , . ISO 707/IDF 50 1. , . 6 6.1 20 C25 C. , - . , . - , 35 C - 40 C (4.6.1) , - . 20 C 25 C. . , - , . 6.2 35 C - 40 C (4.6.1). - , , . 20 C - 25 C. -, , , . , - .
6、 6.3 , . , - , - -, . - . (4.6.2) - 40 C 60 C. 15 . 2 - 20 C 25 C. . , . 7 7.1 (4.5) (4.4) 1 . (4.2). ( 30 ) - ISO 6731/IDF 212012 3 0,1 . 7.2 0,1 1 5 ( ) (7.1). - , . 3 5 3 , . 7.3 7.3.1 (4.3) , . 30 . 7.3.2 (4.4) 2 . (4.2). 7.3.3 ( 30 ) 0,1 . 7.3.4 , 1 . . , 7.3.3, 0,1 . 7.3.5 , 7.3.4, , - 1 . . 8 8.1 , %, , m0 (7.1), ; m1 , (8.2), ; m2 , (7.3.5), . 0,01 % . 8.2 95 %- 3, ISO 5725:1986 2. 8.2.1 , - - , - 100 20 : - 0,10 ; - 0,20 ; - 0,30 . 8.2.2
