The Campingaz Labogaz 470 is a compact portable Bunsen burner that screws onto Campingaz valve cartridges (CV 270 Plus, CV 300 Plus and CV 470 Plus). It gives a steady, adjustable flame for laboratories, schools, jewellers, opticians and hobby workshops, for jobs such as heating liquids in flasks and test tubes or bending glass tubing, without a fixed gas line. Because it uses a valve cartridge, the burner can be removed before the cartridge is empty and refitted later. It burns about 55 g of gas an hour, measures 73 x 65 x 105 mm and weighs 380 g. The cartridge shown in the photo is sold separately.