@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix prefix: <http://qudt.org/vocab/prefix/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix qkdv: <http://qudt.org/vocab/dimensionvector/> .
@prefix quantitykind: <http://qudt.org/vocab/quantitykind/> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix si-unit: <https://si-digital-framework.org/SI/units/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix sou: <http://qudt.org/vocab/sou/> .
@prefix unit: <http://qudt.org/vocab/unit/> .
@prefix vaem: <http://www.linkedmodel.org/schema/vaem#> .
@prefix voag: <http://voag.linkedmodel.org/schema/voag#> .

unit:PSU
  a qudt:Unit ;
  dcterms:description "Practical salinity scale 1978 (PSS-78) is used for ionic content of seawater determined by electrical conductivity. Salinities measured using PSS-78 do not have units, but are approximately scaled to parts-per-thousand for the valid range. The suffix psu or PSU (denoting practical salinity unit) is sometimes added to PSS-78 measurement values. The addition of PSU as a unit after the value is \"formally incorrect and strongly discouraged\"."^^rdf:HTML ;
  dcterms:source <https://unesdoc.unesco.org/ark:/48223/pf0000047932> ;
  qudt:applicableSystem sou:ASU ;
  qudt:applicableSystem sou:CGS ;
  qudt:applicableSystem sou:CGS-EMU ;
  qudt:applicableSystem sou:CGS-ESU ;
  qudt:applicableSystem sou:CGS-GAUSS ;
  qudt:applicableSystem sou:IMPERIAL ;
  qudt:applicableSystem sou:PLANCK ;
  qudt:applicableSystem sou:SI ;
  qudt:conversionMultiplier 0.0 ;
  qudt:conversionMultiplierSN 0.0E0 ;
  qudt:hasDimensionVector qkdv:A0E0L0I0M0H0T0D1 ;
  qudt:hasQuantityKind quantitykind:DimensionlessRatio ;
  qudt:informativeReference "https://en.wikipedia.org/wiki/Salinity#PSU"^^xsd:anyURI ;
  qudt:symbol "PSU" ;
  rdfs:isDefinedBy <http://qudt.org/3.1.11/vocab/unit> ;
  rdfs:label "Practical Salinity Unit" ;
  rdfs:label "Practical Salinity Unit"@en ;
  rdfs:seeAlso unit:PPTH .