Use the table to calculate the correct amount of commercial bleach at 50 ppm you will need to mix with five litres of hot water. What temperature should the water be?

	How much bleach?
	Using household bleach (4% chlorine)	Using commercial bleach (10% chlorine)
Concentration required (ppm)	25 ppm	50 ppm	100 ppm	25 ppm	50 ppm	100 ppm
Minimum water temperature	49C	38C	13C	49C	38C	13C
How much water?	5 litres	3.12 ml	6.25 ml	12.5 ml	1.25 ml	2.5 ml	5 ml
10 litres	6.25 ml	12.5 ml	25 ml	2.5 ml	5 ml	10 ml
50 litres	31.25 ml	62.5 ml	125 ml	12.5 ml	25 ml	50 ml