NP 57-1988
Essential oils Determination of relative density (reference method)

Standard No.

NP 57-1988

Release Date

1988

Published By

PT-IPQ

Latest

NP 57-1988

Scope

This Standard is intended to establis the reference process for determining the relative density at 20° C of essential oils.

NP 57-1988 history

• 1988 NP 57-1988 Essential oils Determination of relative density (reference method)
• 1961 NP 57-1961 Essential oils. Measurement of correlation density