The best replacement for ppb is ppm.

The best alternatives to ppb are rated as following:

Your alternative for ppb is not listed? Suggest!

No companions for ppb have been suggested so far.

You have in mind a companion for ppb and it is not yet here? Propose!

Scale is based on the average worldwide traffic of ppb in all years. Click on graph for more.

ppb

ppm

ug/l