0.01 to 0.05 ppm
0.05 to 0.5 ppm
0.5 to 1.0 ppm
1.0 to 5.0 ppm
1 mg/litre
10 mg/litre
100 mg/litre
1000 mg/litre
5 to 10 cm/sec.
15 to 30 cm/sec.
15 to 30 cm/minute
15 to 30 cm/hour
B
2B
4B
8B
500 to 750 litres/hour/ m2
1000 to 1250 litres/hour/ m2
1250 to 1500 litres/hour/m2
1500 to 2000 litres/hour/m2