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Document set current to 30 July 2026
Defined term · Analytical chemistry

Reverse-phase HPLC

Separation on a hydrophobic stationary phase under an acidified aqueous–organic gradient, with ultraviolet detection at 214 nanometres. The Institute’s reference method for the chromatographic purity…

Document identifier
CEI-GT-129
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Reverse-phase HPLC

§1.1Also known as

RP-HPLC

§1.2Category

Analytical chemistry — Terms describing the determination of identity, purity, content and quality.

§1.3Related terms

  • Chromatographic purity — The area of the main peak as a percentage of total integrated area under stated conditions. A relative measure that assumes comparable molar absorptivity across species…
  • Gradient — The programmed change in mobile-phase composition over a chromatographic run. A shallow gradient resolves close-eluting species that a steep gradient co-elutes, and the…
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