1 microgram (µg) = 1 x 10 -6 grams (g)

1 gallon (gal) 美國加侖 = 3.7854118 Liters (L)

英國加侖 --> 升 × 4.55 imperial gallons to liters × 4.55

1 milligram (mg) = 0.001 grams (g)

1 µg/mL = 1 part per million (ppm) = 1 µg/g*

1 kilogram (kg) = 1000 grams (g) = 2.205 lbs.

1 µg/L = 1 part per billion (ppb)

1 pound (lb) = 453.59237 grams (g)

1 mg/mL = 1000 ppm = 1 mg/g*

1 milliliter (mL) = 0.001 Liters (L)

1 mg/L = 1 ppm = 1000 ppb

1 Liter (L) = 1000 milliliters (mL)

1 ppb = 0.001 ppm = 1000 ppt

1 Liter (L) = 0.26417205 gallons (gal)

1 ppt = 0.001 ppb = 1 x 10 -6 ppm

* By weight

Ratio

%

g/l(mg/ml)

ppm(mg/kg)

ppb

Exponent

1:100

1

10

10000

--

1X10-2

1:200

0.5

5

5000

--

5X10-3

1:500

0.2

2

2000

--

2X10-3

1:1000

0.1

1

1000

--

1X10-3

1:2000

0.05

0.5

500

--

5X10-4

1:5000

0.02

0.2

200

--

2X10-4

1:10000

0.01

0.1

100

--

1X10-4

1:20000

0.005

0.05

50

--

5X10-5

1:50000

0.002

0.02

20

--

2X10-5

1:100000

0.001

0.01

10

10000

1X10-5

1:200000

0.0005

0.005

5

5000

5X10-6

1:500000

0.0002

0.002

2

2000

2X10-6

1:1Mio

0.0001

0.001

1

1000

1X10-6

1:2Mio

0.00005

0.0005

0.5

500

5X10-7

1:5Mio

0.00002

0.0002

0.2

200

2X10-7

1:10Mio

0.00001

0.0001

0.1

100

1X10-7

1:20Mio

0.000005

0.00005

0.05

50

1X10-8

1:50Mio

0.000002

0.00002

0.02

20

2X10-8

1:100Mio

0.000001

0.00001

0.01

10

1X10-8

1:200Mio

0.0000005

0.000005

0.005

5

5X10-9

1:500Mio

0.0000002

0.000002

0.002

2

2X10-9

1:1Mrd

0.0000001

0.000001

0.001

1

1X10-9