Summary:- Ratios of parts per million or ppm in Standard, Imperial and Metric units
ppm Metric Tables
 
ppm = parts per million

 

After determining the correct volume of water to be treated, use this formula to calculate the correct amount of material to use:-

Amount of material needed = Vol. x Conv. factor x ppm desired x (100 / % active ingredient)

Vol. = volume of water to be treated. Can be any volumetric units of measurement - cubic feet, litres, gallons, acre-feet.

Conv. factor = the weight of material that must be added to one unit volume of water to give one part per million (ppm). See below for conversion factors.

ppm desired = the treatment rate desired in parts per million (ppm)

% active ingredient = the percent ingredient of the material to be used. Most materials used in treating fish diseases or aquatic weeds are 100% active or are considered to be 100% active for treatment purposes.

Weight of chemical that must be added to one unit volume of
water to give one part per million (ppm)

2.72 pounds per acre-foot

= 1 ppm

1,233 grams per acre-foot

= 1 ppm

1.233 kilograms per acre-foot = 1 ppm

0.0283 grams per cubic foot

= 1 ppm

0.0000624 pounds per cubic foot

= 1 ppm

0.0038 grams per US gallon

= 1 ppm

0.058419 grains per US gallon

= 1 ppm

0.07016 grains per Imperial gallon = 1 ppm

1 milligram per litre

= 1 ppm

1 microlitre ( µL ) per litre = 1 ppm

0.001 gram per litre

= 1 ppm

8.345 pounds per million gallons of water

= 1 ppm

NOTE:- The metric prefix ' milli ' does NOT mean a millionth,
it stands for a thousandth. See the prefix table...


Some associated conversion factors:-

1 acre-foot

= 43,560 cubic feet

1 acre-foot

= 325,850 gallons

1 acre-foot of water

= 2,718,144 pounds

1 cubic foot of water

= 62.4 pounds

1 cubic foot of water = 6.24 Imperial gallons

1 US gallon of water

= 8.34 pounds

1 Imperial gallon of water = 10 pounds

1 US gallon of water

= 3,785 grams or 3.785 kg

1 litre of water

= 1,000 grams = 1 kg (approx)

1 litre of water = 1,000 cubic centimetres (cc)
1 cubic metre = 1,000 litre
1 cubic metre = 1 metric tonne of water (appx.)

1 US fluid ounce

= 29.57 grams

1 US fluid ounce

= 1.043 ounces (av)



Some abbreviations in common use

av = avoirdupois

cm

= centimetres

cc, cu.cm, cm3, cm^3

= cubic centimetre

fl oz

= fluid ounce

fl pt

= fluid pint

fl qt

= fluid quart

ft

= foot, feet

cu.ft. , ft3, ft^3

= cubic foot

gal., gals

= gallon

g, gm

= gram

gr

= grain

in., ins

= inch, inches

cu.in. in3, in^3

= cubic inch

kg

= kilogram

lb., lbs

= pound

l, L = litre, liter

m

= metre, meter

cu.m. , m3, m^3

= cubic metre

oz., ozs

= ounce

yd., yds

= yard


NOTE:- In the metric system, upper case letters usually mean something
different to lower case letters. For instance, k = kilo and K = Kelvin
Litre is an exception to avoid the small l looking like number 1; l or L is ok.

Thanks to the Mississippi State University Extension Service for some of the information.


For metric conversions go to a unit starting with -
a b c d e f g h i j k l m n o p q r s t u v w y



Related pages
" Home page
" Info on SI Units
" SI Unit Descriptions
" SI Derived Units
" SI Prefixes (mega, giga)
" Imperial/UK Units
" Scientific Notation
--(i.e. what is 1.00E+09)

Detail pages
" Feet to metres calculator
" Metres to feet calculator
"
British Thermal Units Btu
" Density of bulk materials
" Density of liquids
" Specific Gravity of water
" Density of metals
" Density of woods
" Kitchen metric
" Medical metric
" Parts per million - ppm
" Clothing metric
" Yarn metric
" Time
" cc to hp
" Paper & Envelopes
" Gross to Nett price
" Nett to Gross price
" Add on Commission
" Sheet metal swg - mm
" Wire & rod swg - awg
" Electrical wire swg - awg
" Steam tables (4 pages)
" Watts, amps, volts, ohms
" M Threads & spanners
" Self tapping screws
" M tap & pilot drill sizes
Other useful sections

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last modified : 7th. September 2011


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