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  2. Traditional handheld refractometer - Wikipedia

    en.wikipedia.org/wiki/Traditional_handheld...

    A traditional handheld refractometer is an analog instrument for measuring a liquid's refractive index. It works on the critical angle principle by which lenses and prisms project a shadow line onto a small glass reticle inside the instrument, which is then viewed by the user through a magnifying eyepiece.

  3. Refractometer - Wikipedia

    en.wikipedia.org/wiki/Refractometer

    Gemstone refractometers are available both as classic optical instruments and as electronic measurement devices with a digital display. [3] In marine aquarium keeping, a refractometer is used to measure the salinity and specific gravity of the water. In the automobile industry, a refractometer is used to measure the coolant concentration.

  4. Digital handheld refractometer - Wikipedia

    en.wikipedia.org/wiki/Digital_handheld_refractometer

    Digital handheld refractometers are generally more precise than traditional handheld refractometers, but less precise than most benchtop refractometers. They also may require a slightly larger amount of sample to read from since the sample is not spread thinly against the prism.

  5. Refractometry - Wikipedia

    en.wikipedia.org/wiki/Refractometry

    Refractometers are frequently used by grape growers and kiwifruit growers for Brix testing of sucrose levels in their fruit. Refractometry is also used in the gelatin industry. To convert the RI of a gelatin sol (reported in Brix) to a gelatin concentration, one need only multiply by eight-tenths (0.8). A sol with a 10.0 RI would therefore be 8 ...

  6. Category:Refractometers - Wikipedia

    en.wikipedia.org/wiki/Category:Refractometers

    Download as PDF; Printable version; ... Pages in category "Refractometers" ... Traditional handheld refractometer

  7. Is It Safe to Use Expired Vitamins? The Truth About Vitamin ...

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    There are some vitamins that come with special storage instructions, so it’s important to thoroughly read labels, Davis-Cadogan says. For example, probiotics —which are usually sold in the ...

  8. Should You Stop Drinking Coffee Every Day? Experts Weigh In - AOL

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    There are a handful of things most of us do every day upon waking up: brush our teeth, scroll on our phones, enjoy a cup of coffee.For many, that cup of coffee is a non-negotiable, whether you ...

  9. New Year's resolutions for pet owners to make (and keep!) in 2025

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    It’s never too old to teach your pet a new hobby (or trick). For example, if you have a dog breed that’s made for running, like an aerodynamic sighthound or an energetic springer spaniel, the ...

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