BS EN 61181:2007

Electric - A general term for the flow of electric charge

Liquid - A state of matter - fluid form

Oil - A hydrophobic liquid with high carbon and hydrogen content. Has many variations including; cooking oils, petrochemical oils, essential oils.

mineral - A naturally occurring solid chemical substance.

Instrument - A wide range of meanings from musical instrument to a measuring instrument

Electrical - Something that requires electricity to work.

Equipment - A product or good that is tactile.

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