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The estimation of the total solids and solids-not-fat of milk from the density and fat content

Published online by Cambridge University Press:  01 June 2009

S. J. Rowland  and
A. W. Wagstaff
S. J. Rowland
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading
A. W. Wagstaff
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading
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Extract

The accuracy of the method specified in B.S. 734:1937 for the estimation of the total solids and solids-not-fat contents of milk from the density and fat content has been assessed by direct comparisons with the gravimetric method. A total of 2425 samples of milk, mostly from single herds, were examined in five series over different years.

The percentages of solids estimated by the density method were lower, by an average of 0·06, than those determined gravimetrically. To correct for this error, and to compensate for the lower, more accurate fat percentages arising from the recent reduction in the capacity of the Gerber milk pipette, it was proposed that the density formulae be modified to T=0·25D+l·22F+0·72 and S.N.F.=0·25D+0·22F+0·72.

These formulae were adopted in October 1957 in an amendment to the B.S. 734 published in 1955.

Type
Original Articles
Information
Journal of Dairy Research , Volume 26 , Issue 1 , February 1959 , pp. 83 - 87
Copyright
Copyright © Proprietors of Journal of Dairy Research 1959

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References

REFERENCES

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