Water Hardness Grains Vs Ppm

As i said before though get in touch with the manufacturer or check the manual where this information is often provided on how to adjust for iron levels.

Water hardness grains vs ppm. Typically water that contains less than 1 grain per gallon is. For example say you have a water hardness value of 180 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. Grains per gallon is the business standard approach for talking about water hardness.

When looking at measurements of hardness what is the difference between grains per gallon gpg and parts per million ppm. 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. Divide the ppm hardness value by 17 1 the conversion factor for ppm to gpg. Also called clark degree in terms of an imperial gallon.

The total hardness you need to set will be 25 on your softener to account for the iron levels. Simply put multiplying a gpg hardness reading by 17 1 will tell you what the hardness is in ppm and conversely dividing a ppm hardness reading by 17 1 will yield the. For example let s say your water hardness is 15 gpg and you have 2 ppm of iron. If hardness is in mg l or ppm convert it into gpg by dividing it with 17 1.

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. Hard water usually requires water softening equipment to make it usable for a home. Water hardness can be measured in gpg or ppm but gpg is the most commonly used measurement. One grain per gallon gpg is equivalent to 17 14 parts per million ppm.

Water that is classified as hard has 150 300 ppm of minerals dissolved in it. Cleaning agents do not react well with hard water and often a distinct oily white crust is left behind after cleaning. Ppm means parts per million mg l means milligrams per liter note. A grain of water hardness is comparable to 1 7000th of a pound.

Jumping mg l by 17 1 will change it to gpg. Formula to measure no of grains to be removed. Ppm and mg l are the same thing. Both units of measurement refer to the amount of hardness in the water tested.

The result is the water hardness expressed in grains per gallon. Work out 180 17 1 10 526.