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Cobalt Glass

Product Code : EL-L-11334

Quick Answer: The Cobalt Glass is a 75 x 50 x 1 mm piece of cobalt glass used in flame testing, so that potassium can be observed even when sodium is present.

Last updated: October 2026

Key Features

Piece of cobalt glass for flame tests
Size: 75 mm long, 50 mm high, 1 mm deep
Helps reveal the lilac flame colour of potassium when sodium masks it

Technical Specifications

Specification	Value
Length	75 mm
Height	50 mm
Depth	1 mm
Product type	Flame testing

About This Product

When a flame test is used to detect potassium ions, any sodium ions present give an intense yellow that masks potassium's lilac colour, so potassium may be missed. Looking at the flame through this piece of cobalt glass makes the presence of potassium easy to observe. Export supply of the Cobalt Glass can be arranged to laboratories and schools in Venezuela, Laos, Belize, Jordan and Antigua and Barbuda.

Frequently Asked Questions

Q1. Why is cobalt glass used in flame tests?
Sodium's intense yellow flame can hide the lilac colour of potassium. Viewing the flame through cobalt glass lets potassium be seen easily.

For a quotation on the Cobalt Glass, contact School Equipments India.

Supply of Cobalt Glass from to Finland, France, Tanzania, Thailand, Sri Lanka, Congo, Costa Rica, Ivory Coast, Croatia, Cuba, Cyprus, Czech Republic, Denmark, Djibouti, Dominica, Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, United Arab Emirates (UAE, Dubai), United Kingdom (London), United States, Uruguay, Uzbekistan, Vanuatu, Belarus, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burkina Faso, Burma Myanmar, East Timor, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Estonia, Ethiopia (Addis Ababa), Fiji, Burundi, Cambodia, Cameroon, Canada, Cape Verde, Central African Republic, Chad, Chile, Colombia. Math Teaching Kit suppliers in Luxembourg, Macedonia, Madagascar, Malawi (Lilongwe), Malaysia (Kuala Lumpur), Maldives, Mali, Malta, Marshall Islands, Mauritania, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Namibia, Comoros, Congo. Math Teaching Kit manufacturers in Dominican Republic, Gabon, Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Hungary, Iceland, Indonesia, Iran, Iraq, Niger, Nigeria (Abuja), Norway, Oman, Palau, Panama, Papua New Guinea, Paraguay, Peru, Philippines (Manila), Poland, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya (Nairobi), Kiribati, Korea, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Liechtenstein, Lithuania, Mauritius, Nauru, Nepal, Netherlands, New Zealand, Nicaragua, Portugal, Qatar, Romania, Russia, Rwanda (Kigali). Math Teaching Kit exportets to Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Sudan, Spain, Sudan, Suriname, Swaziland, Sweden, Switzerland, Syria, Tajikistan, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda (Kampala), Ukraine, Venezuela, Vietnam, Yemen , Zambia (Lusaka), Zimbabwe

Cobalt Glass

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