BURNERS •
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LAB EQUIPMENT
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Best Seller
BUNSEN BURNERS
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D
Natural gas is almost Practical entirely methane. Burners are therefore designed Information for the high calorific value (approximately 38 MJm-3) of this gas. The delivery pressure of natural gas is approximately 2 x 103 Pa (Nmv). Bottled gases liquify at a fairly low temperature and can be easily stored and transported in steel cylinders. The principal gases used are propane (C3 H8) and butane (C4 H10). The gas cylinders must always be used with a suitable pressure reducing valve and regulator which is available from the suppliers of the gas. The calorific value of propane is 93.2 MJm-3 and its normal delivery pressure is 3500 Pa (Nm-2). Butane has a calorific value of 119.3MJm-3 and has a delivery pressure of about 2750 Pa (Nm-2). The Natural Gas Bunsen Burner burns approximately 108 litres per hour of natural gas. The Bottled Gas Bunsen Burner burns approximately 144 litres per hour of bottled gas.
A Electric Burner Designed to carry out all the experiments that a Bunsen burner can without the use of a gas supply. The electric burner is supplied with a protection grill that, when attached, minimises the risk of accidental burns. There is a threaded hole in the top plate for a support rod and the outer cover provides holes for the attachment of support trays. Examples of experiments which can be carried out using the electric burner: Combustion of magnesium and other metals, reduction of cupric oxide, boiling water, dehydration of copper sulphate crystals. Specification • Temperature of heater: up to 920ºC • Four insulating shoes • Power on and heating indicators • Temperature control dial • The separate electric casing avoids any accident due to liquid spillage
• Weight: approximately 2kg • Overall dimensions: L310 x W200 x H110mm • Rating: 500W • Power requirements: 220 - 240V
B8L76958
Bottled Gas B8A57253
each £7.65
B8R01914
each £154.99
B Bunsen Burner, Natural Gas Nickel-plated burner tube with rotatable air regulator and a cylindrical rifled connector, mounted on an enamelled pressed-steel base. Burner tube: 100 x 13mm, height x diameter, base: 80mm diameter. Overall height: 140mm, connector: 10mm o.d.
C Triangular Tripod Stand Triangular top, stainless steel. Length of one side: 130mm, height: 200mm.
B8A88973
B8A57241
each £12.16
B8R01874
pack 10 £69.99
each £4.75
D Triangular Flat Top Tripod Stand Triangular top. Length of side: 125mm, height: 200mm.
B8A88997
Natural Gas
pack 10 £74.99
each £5.25
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