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These refrigerator models are completely spark free on the inside (all internal electrical components have been removed) and have been specifically designed to allow for the safe storage of volatile samples. Volatile samples are considered unsafe for storage in standard refrigerators as any spark formed by components within the freezer can ignite fumes or the sample itself.
Both 130 and 240 litre models are fitted with a unique ‘spark proof start mechanism’ on the refrigeration compressors should any flammable vapours be present outside the refrigerator at floor level.
In reference to AS/NZS60079.10:2004 for zoning of hazardous areas:
For zone 2 classification it is recommended that a refrigerator or freezer be located 300mm above floor level. The model TRF-SP stand suits all spark proof refrigerator and freezer models offered to raise them to a minimum of 300mm above the floor as required.