Gas Burners, Bunsen Burners
Laboratory Gas Burners - applications
Gas burners are important items of laboratory equipment for achieving high temperatures in the laboratory, such as for the flame treatment or sterilisation of laboratory vessels and instruments or inoculation loops. Our laboratory gas burners by the manufacturers WLD-TEC or BOCHEM are suitable for almost all flame-requiring applications in the laboratory, whereby the safety gas burners are mainly used in chemical laboratories, in research institutions in the fields of biotechnology, microbiology or cell biology, as well as in universities, specialist colleges and school laboratories. A Bunsen burner is a small gas burner, which in addition to the Teclu burner is often used on the laboratory bench for the brief heating of substance samples or fluids, and is employed above all in the case of preliminary samples in analytical chemistry, such as blowpipe analysis, borax or phosphorous bead testing and flame testing. Additionally, laboratory gas and Bunsen burners are also used to heat various dishes in molecular kitchens.
Bunsen Burner - function
Bunsen burners are usually operated with town gas, natural gas, propane or butane. According to the functional principle of a jet pump, the relevant combustion gas itself draws in the required combustion air via a small opening. In terms of construction a traditional Bunsen burner usually comprises a burner base, a gas-regulating screw, gas nozzle, burner tube, flue attachment, gas and airs supplies. Classic Bunsen burners consist of an approximately 15 cm long metal pipe, at the upper end of which the gas is ignited by a match, gas lighter or flint. Advanced safety Bunsen burners such as the Flame 100 start immediately at the press of a button. Optionally this laboratory gas burner can also be operated via a foot pedal or an external IR motion sensor. Furthermore, in modern Bunsen burners a grid or fine drilled holes prevent(s) flash-back of the flame into the burner. In the combustion tube/flue the gas flows upwards and is regulated at the lower end of the burner with a gas regulator screw. This screw is conical and closes off the gas supply. The laboratory gas burner stands on a heavy metal base which ensures that the Bunsen burner stands securely on the laboratory bench. The air and combustion gas supply is attached to this base. Connected to the gas tap is a flexible gas pipe through which the gas is supplied. Oxygen enters the Bunsen burner through the air-regulating screw. When this is opened and the oxygen mixes with the combustion gas within the burner, a blue, very hot, pre-mix flame is produced. The flame heat can be regulated between 350 and approx. 1000°C, in the case of the Teclu burner 1300°C. Without the supply of air the flame is yellow and not as hot. When the opening is closed, the combustion gas only mixes with the oxygen at the upper outlet of the burner tube and reaches lower temperatures, whereby such a yellow diffusion flamed can be up to 900°C cooler.
Laboratory Gas and Bunsen Burners - start-up procedure
When starting up a gas burner in the laboratory it must be ensured that the air-regulating screw and gas-regulating screw are closed. It must then be checked that the energy supply to the laboratory gas burner is connected and the flue of the Bunsen burner is firmly attached to the threaded section. The gas burner start-up procedure is generally as follows: open the main gas valve and switch on the electric gas safety device; check that the air and gas-regulating screws are closed; open the gas-regulating screw slightly and immediately ignite the emerging gas; open the gas and air-regulating screws until the required flame is produced. Switching off of the laboratory gas burner generally takes place in the corresponding manner; close the air and then the gas-regulating screw, close the gas valve at the workplace on the laboratory bench; switch off the electrical main safety device and check all the gas taps.
Laboratory Gas and Bunsen Burner - accessories
Our high-quality laboratory gas burners and Bunsen burners are characterised by their maximum degree of safety, extreme convenience and economical energy consumption - as well as the possibility of changing or adding individual components. Depending on the gas burner and manufacturer you can order many different replacement parts and gas burner accessories. Our Bunsen burner ranges includes, for example, gas cartridges, gas hoses, ceran protection plates, safety hoses, IR movement sensors, foot pedals, inoculation loop holders, safety adapters, wind protection or stainless steel burner heads and many other components for the laboratory gas burners we have on offer.