Heaters use the best methods to evenly increase the temperature for samples contained in test tubes, beakers, flasks, and crucibles. Spirit lamps, gas burners, heating mantles, hot air dryers, hotplates apparatuses may use gas or electric power to generate heat required. Ceramic and insulated steel designs provide stable heating sources while still delivering on user safety or lab efficiency. The selection of heaters will accommodate any vessel being used and the procedure requirements.