Water Hardness Dh Scale Conversion

31 152 610 900 fax. No of persons 75 gallons no of gpg mg lit iron total grains to be removed per day. Concentration of 1 milliequivalent per liter meq l 2 8 dh 50.

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Lowercase f is used to prevent confusion with degrees fahrenheit.

Water hardness dh scale conversion. Water hardness is often not expressed as a molar concentration but rather in various units such as degrees of general hardness german degrees dh parts per million ppm mg l or american degrees grains per gallon gpg english degrees e e or clark or french degrees fh f or hf. The table below shows conversion factors between the various units. Lenntech european head office distributieweg 3 2645 eg delfgauw the netherlands phone. Hardness of water is a measure for the content of calcium and magnesium in water.

Water hardness chart treated or softened water 0 1 gpg total grains x 17 1 equals ppm slightly hard 1 2 gpg total grains x 17 1 equals ppm medium hard 3 7 gpg total grains x 17 1 equals ppm. Water hardness conversion table ppm mmol l mg l french degrees german degrees grains per gallon degrees clark 1 is 0 0099 1 0 1 0 056 0 058 0 07 10 is 0 099 10 1 0 56 0 58 0 7 14 3 is 0 142 14 3 1 43 0 8 0 84 1 17 1 is 0 169 17 1 1 71 0 96 1 1 2 17 8 is 0 176 17 8 1 78 1 1 04 1 25. One german degree hardness dh is 10 mg of calcium oxide cao per liter. Just click on the province you re in and find your city.

Formula to measure no of grains to be removed. Water hardness info is really. Table 1 conversion factors. In other countries is measured with english or french degrees of hardness.

A grain of water hardness is comparable to 1 7000th of a pound. How is water hardness measured. You may also see. Unfortunately the classification of the degrees of hardness to water quality soft slightly hard hard very hard is different in many.

The hardness is an arbitrary division into three hardness ranges from soft to hard. If hardness is in mg l or ppm convert it into gpg by dividing it with 17 1. The permanent hardness that comprises calcium and magnesium sulphate does not go on to form scale when heated or boiled. The most common unit in germany is dh degree german hardness.

Hardness is usually expressed in terms of the equivalent quantity of calcium carbonate caco3 in milligrams per litre or parts per million. 31 152 616 289 e mail. In the u s hardness is usually a german dh is 17 8 ppm caco3. Looking for your city water hardness value in canada we ve got it.

The small contribution of magnesium usually is expressed as calcium as in the degrees of hardness at the top and the concentrations of ca 2 cao and caco 3 at the bottom. To express the amount of calcium and magnesium ie the water hardness in numbers there are different units. We contacted the municipal water utilities directly to obtain their actual measured values. If your city is missing let us know and we ll add it in right away.