<p>Fehling's test for sugars. Five test tubes showing the colour changes observed when using Fehling's reagent (blue) to test for the presence of simple sugars. From left to right the test tubes contain: no sugar (control), 0.1 glucose solution (cloudy blue), 1 glucose solution (orange), 10 glucose solution (brown), and sucrose (no colour change). Fehling's reagent contains copper ions, giving it its blue colour. They oxidize the aldehyde group in glucose, forming solid copper oxide. The copper in the oxide has a lower oxidation state, causing the colour change. Sucrose has no aldehyde group. For the start of the reaction, see image A500/448.</p>
Elevate your home or office décor by adding a modern floating frame to your canvas art print. Finishing your gallery wrapped canvas with a floating frame enhances the beauty and detail of our giclée art prints. Handcrafted from solid wood, and available in multiple finish colors, there’s sure to be a frame to accent your canvas art print.
<p>Create the illusion that your new gallery wrapped canvas art is suspended in space with our premium 1.75” inch deep floating frame. With several available frame finishes to choose from, you’re sure to find the color that best accents your handcrafted art and personal décor.</p>
<p>Our floating frame prints feature giclée printed canvas produced with high quality, UV-resistant, environmentally-friendly, latex inks and artist grade, polycotton canvas. We pride ourselves on color accuracy and image clarity to ensure your new canvas print lasts for years to come.</p>
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Science
Chemistry
Andrew Lambert
Photography
