A near infrared spectrophotometric (NIR) method was examined to confirm its applicability for measuring the major constituents in raw milk.The samples tested were collected at the National Institute of Animal Industry.The reference methods used were official analytical methods (Gerber,macro-Kjeldahl, Lane-Eynon and the standard gravimetric method) ,and the NIR instrument used was a Model 6350 (Neotec

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It has been anxiously sought to derive a formula for calculating milk solids-not-fat (SNF) in GOLDING'S plastic bead method2) by experiments.The authors' attention was pointed to the fact that the well-known lactometric methods do not differ fundamentally from the plastic bead method in the point that the solids content is calculated with observed values of fat-percent (F) and specific gravity of milk. However, in the plastic bead method, specific gravity of milk is expressed as the number of beads which sank in a milk sample. Therefore, if any formula for lactometric method be proposed, it would be easy to derive theoretically a corresponding formula for the bead method from the lactometric one.In the following paragraph, the authors will derive each corresponding formula for the plastic bead method to lactometric ones of BABCOCK and the British standard as examples.

where the ratio was 0,33 to 3, was about 85%.Individual bacterial counts of a raw milk sample was estimated from colony counts multiplied by 3.5,and each bacterial clump in raw milk consists of about 3.5 individual bacteria.