691 Dimensionless Quantities
This tissue has following status: green
Created: 07 Dec 2010
Category: No impact on this part
Issue: The standard has been supporting the dimensionless quantity "ppm".
Proposal: Follow the modern practice of using a multiplier such as "mu" for 10 to the minus 6th power, then in the unit of measure field, create "L/L" and "g/g" to show that the measurement was obtained on a volumetric or a mass ratio basis.