Water Hardness Grains Vs Mg L

Hardness is caused by compounds of calcium and magnesium and by a variety of other metals.

Water hardness grains vs mg l.

61 to 120 mg l as moderately hard. This is your grains per day number. The bottom line is softener always needs to be set against the actual hardness of water and not based on your assumptions. I have a separate article about sizing the softener where i cover the difference between gpg and mg l more in depth.

Concentrations of cations in water are expressed in grains per gallon gpg or in milligrams per liter mg l. Different agencies and organizations may use slightly different classifications when discussing water hardness. Mg l means milligrams per liter note. Formula to measure no of grains to be removed.

Symptoms of hard water include. Multiply the answer by your water hardness in grains per gallon to convert mg l or ppm to grains divide by 17 1. Establish the hardness value for the water in mg l. Water softer than 30 to 50 mg l may be corrosive to piping depending on ph alkalinity and dissolved oxygen.

If hardness is in mg l or ppm convert it into gpg by dividing it with 17 1. Grains per gallon is the business standard approach for talking about water hardness. 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. 0 to 60 mg l milligrams per liter as calcium carbonate is classified as soft.

A grain of water hardness is comparable to 1 7000th of a pound. Jumping mg l by 17 1 will change it to gpg. But in short to convert mg l units to gpg divide it by 17 1 and you will get the value you need. 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.

The hardness of high quality water should not exceed 270 mg l 15 5 grains per gallon measured as calcium carbonate. Ppm and mg l are the same thing. Water softeners will correct hard water of more than 270 mg l. Soft water is defined by american national standards nsf ansi 44 and nsf ansi 330 as water containing 1 grain of hardness per gallon or 17 1 mg l hardness.

What is soft water. Typically water that contains less than 1 grain per gallon is. Enter the value into a calculator and then check that you have entered the value accurately. 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.

121 to 180 mg l as hard.