Classic laboratory Bunsen burners designed for everyday heating, sterilization, and flame tests. Adjustable air ports let you quickly tune from a luminous yellow safety flame to a tight, efficient blue cone for complete combustion. Stable bases and rugged metal construction stand up to frequent student use. When connected to a properly regulated fuel source, burners reach temperatures up to 1560 °C and support continuous operation. Always follow approved lighting procedures and open-flame safety rules.