Abstract
Abstract Proof determination using a digital density meter has been difficult at temperatures other than 60°F because no single table for conversion exists as does for apparent specific gravity. The instrument operates more satisfactorily and temperature stability is easier to achieve at temperatures closer to ambient. Because 20°C is widely accepted by the scientific community as the temperature for calibration of equipment and standardization of tests, that temperature was chosen as the basis for the program the author has written to convert specific gravity (20°C/20°C) to proof. AOAC Table 52.003 was the source of data for this program. A table relating specific gravity (20°C/20°C) to proof was also generated from the formula of the International Organization of Legal Metrology (IOLM). Proofs determined using the calculator program and the tables of AOAC, IOLM, and NBS compare favorably.
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