โ Scribed by Rogers, Charles H.
No coin nor oath required. For personal study only.
This shows how necessary it is that the above method should be followed in detail to obtain correct results.
5 . The writer uses for these determinations an especially constructed burette of 5 mils' capacity; the graduated part of the burette is about 230 millimeters in length so that a reading of 0 . 0 2 mils can be made with accuracy. The burette delivers 5 drops to the 0. I mil. This type of burette is strongly recommended and it may be constructed from a graduated pipette. It is filled from the bottom by applying suction to a rubber tube attached to the top.
One must not confuse an acidity degree as determined by this method with the Soxhlet-Henkel degree, referred to principally in German literature. This German degree is two and a half times as great. Quite often dairymen determine milk acidity as lactic acid-ten mils milk titrated with ;", NaOH and the result multiplied by 0.9. As the acidity of fresh milk is not due to lactic acid, but principally to acid phosphates, this degree is confusing and should be discontinued.
COLUMBUS, OHIO,
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