What is soft water.
Water hardness grains vs mg l.
121 to 180 mg l as hard.
Multiply the answer by your water hardness in grains per gallon to convert mg l or ppm to grains divide by 17 1.
61 to 120 mg l as moderately hard.
Symptoms of hard water include.
Mg l means milligrams per liter note.
If iron is present add 5 grains for every ppm mg l of iron iron must be dissolved iron it appears clear from the tap but leaves reddish brown stains.
But in short to convert mg l units to gpg divide it by 17 1 and you will get the value you need.
If hardness is in mg l or ppm convert it into gpg by dividing it with 17 1.
Jumping mg l by 17 1 will change it to gpg.
Formula to measure no of grains to be removed.
The bottom line is softener always needs to be set against the actual hardness of water and not based on your assumptions.
Hardness is usually expressed in grains per gallon or ppm as calcium carbonate equivalent.
Establish the hardness value for the water in mg l.
General guidelines for classification of waters are.
0 to 60 mg l milligrams per liter as calcium carbonate is classified as soft.
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 hard 7 10 5 gpg total grains x 17 1 equals ppm extremely hard.
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.
Water softer than 30 to 50 mg l may be corrosive to piping depending on ph alkalinity and dissolved oxygen.
Typically water that contains less than 1 grain per gallon is.
And more than 180 mg l as very hard.
Different agencies and organizations may use slightly different classifications when discussing water hardness.
This is your grains per day number.
Water softeners will correct hard water of more than 270 mg l.
I have a separate article about sizing the softener where i cover the difference between gpg and mg l more in depth.
A grain of water hardness is comparable to 1 7000th of a pound.
Grains per gallon is the business standard approach for talking about water hardness.
Ppm and mg l are the same thing.
Hardness is caused by compounds of calcium and magnesium and by a variety of other metals.
The hardness of high quality water should not exceed 270 mg l 15 5 grains per gallon measured as calcium carbonate.
