If you would like to try home brewing, you need a refractometer. A refractometer allows you to measure sugar concentration in the wort. You then use this measurement to calculate the beer’s alcohol ...
The Rudolph Research J257 Wide Range Refractometer was developed by working together with laboratory refractometer users from the polymer, petroleum, petrochemical, pharmaceutical and essential oil ...
THE accompanying diagram shows the essential parts of a refractometer using the principle of phase contrast, which is new for this class of instrument. It gives relative measurements, like most of the ...
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