CONVERSION FIGURES

1 Metre 3.3 feet
1 litre 1.8 pints
4.5 litres 1 gallon
1 cubic metre 35.3 cubic feet / 1000litres / 220 galloons
1 gram 0.035 ounce
28.3 grams 1 ounce
1 kilogram 2.2 pounds
100ppm 1 litre per 10,000 litres
50ppm 1 litre per 20,000 litres
20ppm 1 litre per 50,000 litres