mg/kg mg/kg 1.0
ug/kg mg/kg 0.001
gm/kg mg/kg 1000.0
ng/kg mg/kg 0.000001
pg/kg mg/kg 0.000000001
mg/m3 mg/m3 1.0
ug/m3 mg/m3 0.001
gm/m3 mg/m3 1000.0
ng/m3 mg/m3 0.000001
pg/m3 mg/m3 0.000000001
ppm ppm 1.0
pph ppm 0.001
ppb ppm 1000.0
ppt ppm 0.000001
mg/L mg/L 1.0
ug/L mg/L 0.001
gm/L mg/L 1000.0
ng/L mg/L 0.000001
pg/L mg/L 0.000000001
mg mg 1.0
ug mg 0.001
gm mg 1000.0
ng mg 0.000001
pg mg 0.000000001