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Packaging Details - Unit Type:piece
- Package Weight:0.07kg (0.15lb.)
- Package Size:10cm x 5cm x 1cm (3.94in x 1.97in x 0.39in)
Packaging Details - Unit Type:piece
- Package Weight:0.07kg (0.15lb.)
- Package Size:10cm x 5cm x 1cm (3.94in x 1.97in x 0.39in)
style="font-family:Arial;font-size:16px;">{infomodule} Please add this item to your watch list so that you can receive price update about it via email. Here is how: Click the Add to Watch List button under the Place bid or Buy It Now button. Name:Blue Welding Lens Model:647956 Specifications: Material:Blue cobalt glass Color:Blue Fire-resistance rating:2 Transmittance:5 (%) Mohs hardness:6 Size:96mm*46mm*1mm Description: Blue cobalt glass is why the blue? In fact, because the process of making glass in the process of adding cobalt ions to the special glass,the main component of cobalt aluminate, chemical formula: Al2CoO4, so the finished glass will appear blue. Blue cobalt glass because of cobalt ions because of the reason, so blue cobalt glass can filter yellow! The elemental spectrum corresponding to the cobalt element makes its absorption of blue light, that is reflection or through the blue light, and for the blue light wavelength of different yellow, cobalt elements can be completely absorbed. In the observation of the flame reaction of potassium need to pass through the blue cobalt glass, because the potassium compounds are impure, often mixed with some impurities, such as sodium ions (not easily separated), in the flame reaction, due to sodium ions Yellow, interference with the flame reaction of potassium (purple) observation, it must be yellow light filter, by the complementary principle we can see that yellow and blue complement each other, with blue cobalt glass can filter yellow light, you can clear to see the flame of potassium. Blue cobalt glass role: for filtering, from the role of color filter. Commonly used in welding masks, cement production areas, chemical experiments in the flame color reaction in the yellow filter, from the role of a color filter, which observed the real flame color. Package include: 2 x Blue Welding Lens -->
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