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 ...

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WHEN using a refractometer, it is important that a representative sample of grass is taken from each crop. Juice is extracted by mincing or preferably by freezing the sample (200-300g) for about six ...

The realization you didn’t protect your engine from freezing temps comes with a moment of truth: It could be that the engine froze but the casting plugs did their job, requiring you to simply hammer ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Warren P. Valentine began making ...