Division ACRONYMS

United Kingdom

Term used	Definition
ADt	Air Dry tonnes (of pulp) expressed as 90 % dryness.
AOX	Adsorbable organic halides measured according to the EN ISO: 9562 standard method for waste waters.
BOD	Biochemical oxygen demand. The quantity of dissolved oxygen required by microorganisms to decompose organic matter in waste water.
CMP	Chemimechanical pulp.
CTMP	Chemithermomechanical pulp.
COD	Chemical oxygen demand; the amount of chemically oxidisable organic matter in waste water (normally referring to analysis with dichromate oxidation).
DS	Dry solids, expressed as weight %.
DTPA	Diethlyene triamine pentaacetic acid (complexing/chelating agent used in peroxide bleaching).
ECF	Elemental Chlorine Free.
EDTA	Ethylene diamine tetraacetic acid (complexing/chelating agent).
H₂S	Hydrogen sulphide.
LWC	Light weight coated paper.
NO_X	The sum of nitrogen oxide (NO) and nitrogen dioxide (NO₂), expressed as NO_2.
NSSC	Neutral sulphite semi chemical.
RCF	Recycled fibres.
SO₂	Sulphur dioxide.
TCF	Totally Chlorine Free.
Total nitrogen (Tot-N)	Total nitrogen (Tot-N) given as N, includes organic nitrogen, free ammonia and ammonium (NH₄ ⁺-N), nitrites (NO₂ ^--N) and nitrates (NO₃ ^--N).
Total phosphorus (Tot-P)	Total phosphorus (Tot-P) given as P, includes dissolved phosphorus plus any insoluble phosphorus carried over into the effluent in the form of precipitates or within microbes.
TMP	Thermomechanical pulp.
TOC	Total organic carbon.
TRS	Total reduced sulphur. The sum of the following reduced malodorous sulphur compounds generated in the pulping process: hydrogen sulphide, methyl mercaptan, dimethylsulphide and dimethyldisulphide, expressed as sulphur.
TSS	Total suspended solids (in waste water). Suspended solids consist of small fibre fragments, fillers, fines, non-settled biomass (agglomeration of microorganisms) and other small particles.
VOC	Volatile organic compounds as defined in Article 3(45) of Directive 2010/75/EU.