Z166464
Aquadur® test strips
Water hardness, pkg of 100 ea
Synonym(s):
water hardness, water quality
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About This Item
UNSPSC Code:
41113034
NACRES:
NB.35
Recommended Products
description
semi-quantitative
specific analyte(s)
calcium, magnesium
packaging
pkg of 100 ea
manufacturer/tradename
Macherey-Nagel
color
green to red change
detection method
colorimetric
General description
Aquadur water hardness test strips are the ideal choice to quickly, easily and reliably determine water hardness. In many industries water hardness is an important parameter in process control and has to be monitored constantly, for example in the textile industry, water works, fish-farming and aquaculture.
Gradation
<55, >90, >180, >270, >360, >445ppm
The hardness of water is expressed in mmol/l or in the older common unit degrees of hardness, whereby it is important to differentiate between German, English and French interpretation:
in Germany: 1 °d = 10 mg/l CaO = 17.8 mg/l CaCO3
in Great Britain: 1 °e = 14.3 mg/l CaCO3
in France 1 °f = 10 mg/l CaCO3
Conversion factors: 1 °d = 1.25 °e = 1.78 °f = 0.178 mmol/l
In the USA, the water hardness is expressed as ppm (mg/l) CaCO3. Generally, water is often simply classified as "soft water", or "hard water" , the following values apply to these terms:
below 50 ppm CaCO3 - very soft water
50 − 120 ppm CaCO3 - soft water
120 - 240 ppm CaCO3 - medium hard water
240 - 360 ppm CaCO3 - hard water
above 360 ppmCaCO3 - very hard water
Gradation
<55, >90, >180, >270, >360, >445ppm
The hardness of water is expressed in mmol/l or in the older common unit degrees of hardness, whereby it is important to differentiate between German, English and French interpretation:
in Germany: 1 °d = 10 mg/l CaO = 17.8 mg/l CaCO3
in Great Britain: 1 °e = 14.3 mg/l CaCO3
in France 1 °f = 10 mg/l CaCO3
Conversion factors: 1 °d = 1.25 °e = 1.78 °f = 0.178 mmol/l
In the USA, the water hardness is expressed as ppm (mg/l) CaCO3. Generally, water is often simply classified as "soft water", or "hard water" , the following values apply to these terms:
below 50 ppm CaCO3 - very soft water
50 − 120 ppm CaCO3 - soft water
120 - 240 ppm CaCO3 - medium hard water
240 - 360 ppm CaCO3 - hard water
above 360 ppmCaCO3 - very hard water
Legal Information
Aquadur is a registered trademark of Macherey-Nagel GmbH & Co., KG
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