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Attivo 2 anni, 9 mesi fa
A refractometer is a simple instrument used for measuring concentrations of aqueous solutions. It requires only a few drops of liquid, and is used throughout the food, agricultural, chemical, and manufacturing industries.
A lensmeter or lensometer, also known as a focimeter or vertometer,[1][2] is an ophthalmic instrument. It is mainly used by […] Visualizzare
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