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Your Safer Source for Science
Address Flinn Scientific Canada, Inc. 175 Longwood Road South Hamilton, ON L8P 0A1
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Item #: AP1058

Price: $76.40

In Stock.

Cobalt glass plates are high quality, dark blue cobalt glass filters, not just blue glass like other low-cost alternatives. The plates are available in three sizes.

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Item# AP1057 AP1058 AP1059
Size 2" x 2" 3" x 3" 4" x 4"
Package Size Pkg. of 6 Pkg. of 6 Pkg. of 6
Price $47.15 $76.40 $115.00
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Product Details

High quality, dark blue cobalt glass filter-not just blue glass like other low-cost alternatives. In flame tests, a mixture of sodium and potassium salts will produce an orange flame. This is because sodium's orange flame masks potassium's violet flame. If viewed through this filter, the orange color is blocked so that a violet-colored flame can be seen.