Percent

Parts per Million

Parts per Billion

Parts per Trillion

.001% =

10 ppm =

.0001% =

1 ppm =

1,000 ppb =

1,000,000 ppt

.00001% =

.1 ppm =

100 ppb =

100,000 ppt

.000001% =

.01 ppm =

10 ppb =

10,000 ppt

.001 ppm =

1 ppb =

1,000 ppt

.0001 ppm =

1 ppb =

100 ppt

.01 ppb =

10 ppt

.001 ppb =

1 ppt