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1: Under Reject: The product weighs 84.9 g or less 2: Under OK: The product weighs 85 g, but less than 95 g 3: Valid: The product weighs 96 g, but less than 105 g 4: Over OK: The product weighs 105 g, and less than 114 g 5: Over Reject: The product weighs over the 115 g limit
It is usual for hydrometers to be used with dense liquids to have the mark 1.000 (for water) near the top of the stem, and those for use with lighter liquids to have 1.000 near the bottom. In many industries a set of hydrometers is used (1.0–0.95, 0.95–.) to have instruments covering the range of specific gravities that may be encountered.