20 mg l to grain per gallon 1 40314 grain per gallon.
Water hardness grains to mg l.
A grain of water hardness is comparable to 1 7000th of a pound.
What is soft water.
If hardness is in mg l or ppm convert it into gpg by dividing it with 17 1.
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.
10 mg l to grain per gallon 0 70157 grain per gallon.
And more than 180 mg l as very hard.
Also called clark degree in terms of an imperial gallon.
Quick conversion chart of mg l to grain per gallon.
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.
Mg l means milligrams per liter note.
The grain per gallon gpg is a unit of water hardness defined as 1 grain 64 8 milligrams of calcium carbonate dissolved in 1 us gallon of water 3 785412 l it translates into 1 part in about 58 000 parts of water or 17 1 parts per million ppm.
Jumping mg l by 17 1 will change it to gpg.
Enter the value into a calculator and then check that you have entered the value accurately.
Water hardness levels are depicted in milligrams per liter mg l parts per million ppm or grains per gallon gpg.
30 mg l to grain per gallon 2 10471 grain per gallon.
Formula to measure no of grains to be removed.
For example if your water test shows 250 mg l hardness you actually have 14 62 grains per gallon.
The longer water is exposed to a certain stone the harder it will be.
Grains per gallon is the business standard approach for talking about water hardness.
121 to 180 mg l as hard.
The result is the water hardness expressed in grains per gallon.
0 to 60 mg l milligrams per liter as calcium carbonate is classified as soft.
This map uses ppm measures.
Ppm and mg l are the same thing.
Symptoms of hard water include.
Establish the hardness value for the water in mg l.
If a test for hard water is measured in parts per million or milligrams per liter you can take the total hardness level and divide it by 17 1 to get hardness in grains per gallon.
For example say you have a water hardness value of 180 ppm.
61 to 120 mg l as moderately hard.
Hardness is usually expressed in grains per gallon or ppm as calcium carbonate equivalent.
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.
40 mg l to grain per gallon 2 80628 grain per gallon.
For example water from an underground aquifer will be harder than water from a river or lake.
Divide the ppm hardness value by 17 1 the conversion factor for ppm to gpg.
