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refractometer

sjsheng

By sjsheng,
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hotsoup Newbie

hotsoup

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If u happen to measure SG with hydrometer in different water temperture, readings will vary. Retrometer will provide a more constant and accurate reading regardless of water temperture. That's why the price is so..much apart

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Tanzy Newbie

Tanzy

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The refractive index of water is affected by density of the water which is affected by temperature therefore even when using a refractometer you must note the temperature to convert S.G. into salinity.

If you are interested in this phenomenen, you can search on Lorentz-Lorenz relation which describes the relationship between refraction of light and the density of a translucent body.

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