2.5x and 5x magnification. LED illumination. For Seniors Sewing Cross Stitch Embroidery. Our most sold Sewing Magnifier in our online store. This is one of ...

To remove smudges and oils that may have come in contact with the lenses, spray them with a small amount of optical cleaning fluid. Wipe down the lenses using a ...

Urine is a complex organic chemical mixture containing primarily phosphocreatine - a chemical containing phosphorous - as well as urea and creatinine. After the urine is deposited and biological breakdown begins, these chemicals create ammonia and other nitrogen-based compounds that deliver the strong smell associated with urine. Un-Duz-It Unleashed eliminates all three compounds and removes the odors generated as well as the pigments excreted with the urine.

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After cleaning with Unleashed, the area may still glow when observed under UV light. (Actually, the correct term is “fluoresce” - the treated area is reflecting the UV light back to your eyes as visible light.) This fluorescing is not due to the presence of urine in that spot, but from phosphorous left over from the breakdown of phosphocreatine by Unleashed. During that process the phosphorous becomes chemically bonded to the fibers as a dye would. Just like a dye, the phosphorous is now part of the surface of the fibers, and it is quite difficult to remove it without damaging the existing dyes on those fibers.

This innovative optical fiber was created from a unique glass for maximum flexibility — allowing you to bend, curve and wrap it around almost anything, while ...

FRESNEL LENS Sizes, Quantities, and Costs. Number in U.S.. ORDER, Radius mm, Radius inches, Height inches, Weight in Pounds, Number Built, 1900, 1922, 1945 ...

Think of it this way: phosphorous is used in LEDs and fluorescent light bulbs to cause them to glow and produce light. And we all know that there is no urine in LEDs or in fluorescent light bulbs!

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Light rays that pass through a lens' edges tend to focus at an offset from those passing through its center, creating an unpleasant blur in spherical lenses ...

Fortunately, there is little need to remove the phosphorus as it has no odor and leaves no visible stain. Unleashed has fundamentally altered the chemistry of the original urine deposit so that no urine odors can be produced.

Magnification Useful calculators and formulae. Notes: 1: Atmospheric seeing conditions (the sky) often limits the maximum usable magnification to 250-350x.

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Want more urine stain and odor removal tips? See Part 1 and Part 2 of our "Proven Process to Remove Pet Urine from Carpets" NEWS series.

Aug 2, 2012 — Field number is the diameter of the eyepiece lens and is most often expressed in millimeters. Field of View (FOV) is the amount of the object ...

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You may have used a UV light to detect urine spills in carpets, upholstery and flooring. But why does urine glow like that? And more importantly, why do urine spots sometimes still glow under UV after they’ve been treated? We asked Werner Buchman, chief chemist with Legend Brands, to explain.