Percent Concentration and Trace Level Table

1,000,000 ppm                  100%

100,000 ppm                     10%

10,000 ppm                        1%

1,000 ppm                          0.1%

100 ppm                              0.01%

10 ppm                                 0.001%

1 ppm                                   0.0001%

1,000 ppb                            1 ppm

100 ppb                               0.1 ppm

10 ppb                                  0.01 ppm

1 ppb                                    0.001 ppm

1,000 ppt                             0.001 ppm

100 ppt                                0.0001 ppm

10 ppt                                   0.00001 ppm

1 ppt                                     0.000001 ppm

1,000 ppt                             1 ppb

100 ppt                                0.1 ppb

10 ppt                                   0.01 ppb

1 ppt                                     0.001 ppb