Purpose This standard applies to a type of naphtha (fuel) intended for use in catalytic heaters and in pressurized appliances that use naphtha, such as cookers, lanterns, heaters and blowtorches. The limit values prescribed in this standard are intended to allow the use of naphtha (fuel) in catalytic heaters. The use of other fuels in catalytic heaters, for example fuels with a higher boiling temperature range, higher vapor pressures or higher sulfur contents could result in poor performance or make the heater unsafe. operation of a device. Testing and evaluating a product against this standard may require the use of materials or equipment that may be hazardous. This document does not intend to cover all aspects related to the safety of its use. It is up to the user of the standard to obtain information from the competent authorities and adopt health and safety practices in accordance with applicable regulations before using it.