. Milk. Milk. 174 MILK per cent, of the fat fails to appear in the column for this reason. Van Slyke gives the following method to separate the fat more completely from the mixture: "Use 20 sulphuric acid, whirl the bottles at full speed for. three to five minutes longer than usually, and read the fat at a temperature of 130° to 140° F. Steam tur- bine testers which keep the bottles hot give the best ; When carried out carefully the Babcock test gives results which differ but slightly from results obtained by the ether extraction method. The following figures given by Le
. Milk. Milk. 174 MILK per cent, of the fat fails to appear in the column for this reason. Van Slyke gives the following method to separate the fat more completely from the mixture: "Use 20 sulphuric acid, whirl the bottles at full speed for. three to five minutes longer than usually, and read the fat at a temperature of 130° to 140° F. Steam tur- bine testers which keep the bottles hot give the best ; When carried out carefully the Babcock test gives results which differ but slightly from results obtained by the ether extraction method. The following figures given by Leach show the compar-. Fig. 64.—Test bottles used with skimmed milk and whey. Each division of the scale represents per cent, on the neck of the bottle at the right. On the two bottles at the left each division represents per cent. fat. (Circular of Information No. 27, July, 1911, Univ. of Wis. Agri. Exp. Sta.) ative accuracy of fat determinations by the Babcock method with the results obtained by the Adams-Soxhlet method: FAT DETERMINATIONS COMPAHING THE BABCOCK METHOD WITH THE ADAMS- SOXHLET METHOD Adams-Soxhlet method, Babcock method, Kind of milk. per cent. fat. per cent. fat. Wholemilk—1 2 Watered milk—1 2. 70 2 70 2 Skimmed milk—1 2 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Heinemann, Paul Gustav. Philadelphia and London, W. B. Saunders Company
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