liquid indicator

liquid indicator

A device, frequently combined with a strainer, located in the liquid line of a refrigeration system and having a sight port by which the liquid flow may be observed for presence of bubbles.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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The headphone jack will also be where the liquid indicator is located, which was formerly in the docking port.
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The excess liquid indicator fluid flows into a smaller indentation via a channel.
Tools for environmental health
If you suspect that the oysters were recently washed, lay the pH test strip directly on the oysters, or, if available, use several drops of a pH liquid indicator (available in hardware or garden stores) or methyl-red indicator solution.
Some simple field tests for use in food inspections
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