Parts per Billion
type: Unit
description: Dimensionless unit for concentration. Recommended practice is to use specific units such as $ug/l$.
applicable system: ASU
applicable system: CGS
applicable system: CGS-EMU
applicable system: CGS-ESU
applicable system: CGS-GAUSS
applicable system: IMPERIAL
applicable system: PLANCK
applicable system: SI
conversion multiplier: 0.000000001
conversion multiplier SN: 1.0E-9
has dimension vector: A0E0L0I0M0H0T0D1
has quantity kind: AmountOfSubstanceFraction
has quantity kind: DimensionlessRatio
has quantity kind: MoleFraction
iec61360 code: 0112/2///62720#UAD926
informative reference: https://cdd.iec.ch/cdd/iec62720/iec62720.nsf/Units/0112-2---62720%23UAD926
informative reference: https://en.wikipedia.org/wiki/Parts-per_notation
scaling of: UNITLESS
symbol: PPB
ucum code: [ppb]
unece common code: 61
unit for quantity kind: AmountOfSubstanceFraction
unit for quantity kind: DimensionlessRatio
unit for quantity kind: MoleFraction
wikidata match: Q2055118