Water Hardness Grains Vs Mg L

Symptoms of hard water include.

Water hardness grains vs mg l.

But in short to convert mg l units to gpg divide it by 17 1 and you will get the value you need. 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. Water softer than 30 to 50 mg l may be corrosive to piping depending on ph alkalinity and dissolved oxygen. Multiply the answer by your water hardness in grains per gallon to convert mg l or ppm to grains divide by 17 1.

Mg l means milligrams per liter note. Typically water that contains less than 1 grain per gallon is. Different agencies and organizations may use slightly different classifications when discussing water hardness. 61 to 120 mg l as moderately hard.

General guidelines for classification of waters are. Concentrations of cations in water are expressed in grains per gallon gpg or in milligrams per liter mg l. 121 to 180 mg l as hard. And more than 180 mg l as very hard.

0 to 60 mg l milligrams per liter as calcium carbonate is classified as soft. If hardness is in mg l or ppm convert it into gpg by dividing it with 17 1. Water softeners will correct hard water of more than 270 mg l. Jumping mg l by 17 1 will change it to gpg.

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. The hardness of high quality water should not exceed 270 mg l 15 5 grains per gallon measured as calcium carbonate. 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. Enter the value into a calculator and then check that you have entered the value accurately.

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

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. Grains per gallon is the business standard approach for talking about water hardness. Hardness is caused by compounds of calcium and magnesium and by a variety of other metals. Formula to measure no of grains to be removed.

A grain of water hardness is comparable to 1 7000th of a pound.