Archive image from page 87 of Dairy chemistry; a practical handbook. Dairy chemistry; a practical handbook for dairy chemists and others having control of dairies dairychemistryp00rich Year: 1920 72 PHYSICAL DETERMINATIONS. Determination of Specific Gravity.—The lactometers used in dairy work are of two kinds, the thermo-lactometer and the ordinary lactometer. The thermo-lactometer (Fig. -4) consists of a stem on which is marked a double scale, one part reading the specific gravity, and the other the temperature on the enclosed thermometer ; a cylindrical body ; and two bulbs, the upper one b
Archive image from page 87 of Dairy chemistry; a practical handbook. Dairy chemistry; a practical handbook for dairy chemists and others having control of dairies dairychemistryp00rich Year: 1920 72 PHYSICAL DETERMINATIONS. Determination of Specific Gravity.—The lactometers used in dairy work are of two kinds, the thermo-lactometer and the ordinary lactometer. The thermo-lactometer (Fig. -4) consists of a stem on which is marked a double scale, one part reading the specific gravity, and the other the temperature on the enclosed thermometer ; a cylindrical body ; and two bulbs, the upper one being the bulb of the thermometer, and the lower one (containing mercury 6.—Vieth's Lactometer. or shot) serving for the adjustment. By its means the tem- perature and specific gravity can be read off from the same instrument. The ordinary lactometer consists of a stem carrying a scale on which the specific gravity is read ; a cylindrical, or globular, body ; and a bulb containing mercury or shot. Soxhlet's lactometer (Fig. 5) contains a scale from 25a (1-025) to 35° (1-035) divided up into suitable divisions (J or J).
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