14
1 Preparing and using for the first time
You can find out what the water hardness is by using the Aquadur®
test strip supplied as standard.
T
Hold the test strip briefly (for 1 second) under flowing water.
Shake off the water.
T
Wait for about 1 minute.
T
You will then be able to read the degree of water hardness
from the discoloration of the Aquadur® test strip and the
description on the packaging.
Level
Display German
Degree (°dH)
Degrees of general
hardness (°dGH)
Parts per
million (ppm)
Indicator Strip number
of
‘
reddish
’
fields
Not active
–
–
–
–
Very soft water
<3
<3
< 53.4
None
Soft water
> 4
> 4
> 71
1
Hard water
> 8.4
> 8.4
> 150
2
Very hard water
> 14
> 14
> 250
3
Determining the water
hardness
