Gross Calorific Value (Higher Heating Value) & Net Calorific Value (Lower Heating Value)

SOP: 3140

UKAS accredited

Gross and Net Calorific Value.

In-house method based on EN 15400:2011 Solid Recovered Fuels – Determination of calorific value.  Gross calorific value is determined in an automated isoperibol bomb calorimeter calibrated with certified benzoic acid.  Net calorific value is determined by calculation following the determination of gross calorific value together with the hydrogen content in accordance with EN 15407:2011.

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A number of different publications and standards cite sulphate methods. BR279 (1995) has largely been superseded by analytical procedures as detailed in TRL 447 and BRE Special Digest:1 2005 3rd Edition. In addition further reference may be made to BS EN 144-1:2009 + A1:2012 for the testing of aggregates and BS 1377:2018 for soils for civil engineering purposes.

Testing to meet the requirements of UKWIR Report Ref. No. 10/WM/03/21 Guidance for the selection of water supply pipes to be used in brownfield sites.

Testing & reporting is undertaken in accordance with BS 3882:2015 Specification for topsoil and BS 8601:2013 Specification for subsoil and requirements for use

All Asbestos Methods