- 1 Part per million (PPM)
- 1 Part per billion (PPB)
- 1 Part per trillion (PPT)
- 1 Part per quadrillion (PPQ)
- 1 PPM x 1,000 = 1,000 PPB
- 1,000 PPB x 1,000 = 1,000,000 PPT
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1 Part per million (PPM) = 1 milligram per liter (mg/L
-
1 Part per million (PPM) = 1 microgram per milliliter (µg/mL)
- 1 Part per billion (PPB) = 1 microgram per liter (µg/L)
- 1 Part per trillion (PPT) = 1 nanogram per liter (ng/L)
- 1 Part per quadrillion (PPQ) = 1 picogram per liter (pg/L)
Solids/Soil/Sediment Units:
- 1 gram = 1,000 mg = 1,000,000 µg = 1,000,000,000 ng
- 1 Part per million (PPM) = 1 milligram per kilogram (mg/kg)
- 1 Part per million (PPM) = 1 microgram per gram (µg/mL)
- 1 Part per billion (PPB) = 1 microgram per kilgram (µg/kg)
- 1 Part per billion (PPB) = 1 nanogram per gram (ng/g)
- 1 Part per trillion (PPT) = 1 nanogram per kilogram (ng/kg)
Air Units:
- PPM, PPB, PPT (v/v)
- mg/m3, g/m3, ng/m3 (w/v)
- µg/m3 - micrograms per cubic meter
- ng/m3 - nanograms per cubic meter
PPM Units:
- 1 Part per million (PPM) = 1 milligram per liter (mg/L)
- 1 Part per million (PPM) = 1 microgram per milliliter (µg/mL)
- 1 Part per million (PPM) = 1 milligram per kilogram (mg/kg)
- 1 Part per million (PPM) = 1 microgram per gram (µg/g)
PPB Units:
- 1 Part per billion (PPB) = 1 microgram per liter (µg/L)
- 1 Part per billion (PPB) = 1 microgram per kilogram (µg/kg)
- 1 Part per billion (PPB) = 1 nanogram per gram (ng/g)
PPT Units:
- 1 Part per trillion (PPT) = 1 nanogram per liter (ng/L)
- 1 Part per trillion (PPT) = 1 nanogram per kilogram (ng/kg)
PPQ Units:
- 1 Part per quadrillion (PPQ) = 1 picogram per liter (pg/L
Other Units:
- 1-Kilogram (kg) = 1 million milligrams (mg)
- 1-Kilogram (kg) = 2.204 Lbs.
- 30 gram sample size - 1.05 oz.
- 1-Liter of water weighs exactly 1kg
- 1-Liter of water = 1,000 mLs
- 1-Liter of water = 1.06 quart
- 1-Gallon = 3.785 Liters






