Confusion still exists about the difference between the terms LSF and LSHF in the case of many data, signal and control cables.

LSF stands for ‘Low Smoke and Fume’ and is a somewhat meaningless term applying to products that are often PVC based, which may emit up to 22% Hydrogen Chloride (HCl) gas when burned and give off black smoke. Hydrogen Chloride gas can be deadly to people and damage sensitive equipment and black smoke can obscure exit routes in the event of a fire.

By way of comparison, standard PVC gives off up to 28% HCl. LSHF cables (Low Smoke Halogen Free) are those which emit no more than 0.5% HCl when burned. There is a significant difference between the two products and it is vital that specifiers know which they are choosing.

If the installation is in a public building such as an airport, hospital, prison or hotel, where the evacuation of people may be restricted or sensitive property could be damaged by fumes in the event of fire, you will almost certainly need a LSHF (Low Smoke Halogen Free) cable.

See the difference for yourself by watching our lighter test

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