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The refractive index of liquid differs with temperature. It is most desirable that measurement be made under constant
temperature conditions of 20 degrees Celsius (68 degF). To achieve compensated readings of liquid samples which are
not 20 degrees C, a fused bimetal compensator has been designed into the Aquafauna refractometer. Contained in the
barrel, this device has excellent durability.Upon taking a sample under the daylight plate, the sample immediately
adopts the temperature of the instrument. If measuring heated or refrigerated samples, allow the liquid to attain
ambient temperature or wait 1 or 2 minutes after applying the sample to the prism. With the Aquafauna
refractometer, it is possible to achieve accurate temperature compensated readings of liquid samples when the instrument is between
the temperatures of 10 deg C and 30 deg C (50 deg F - 86 deg: F).
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