Water Hardness Grains Vs Ppm

Grains per gallon is the business standard approach for talking about water hardness.

Water hardness grains vs ppm.

When looking at measurements of hardness what is the difference between grains per gallon gpg and parts per million ppm. Divide the ppm hardness value by 17 1 the conversion factor for ppm to gpg. Cleaning agents do not react well with hard water and often a distinct oily white crust is left behind after cleaning. Jumping mg l by 17 1 will change it to gpg.

Water that is classified as hard has 150 300 ppm of minerals dissolved in it. Ppm and mg l are the same thing. For example say you have a water hardness value of 180 ppm. The total hardness you need to set will be 25 on your softener to account for the iron levels.

Ppm means parts per million mg l means milligrams per liter note. If hardness is in mg l or ppm convert it into gpg by dividing it with 17 1. 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. This range signifies the grain capacity of most water softeners available on the market.

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. One grain per gallon gpg is equivalent to 17 14 parts per million ppm. Water hardness can be measured in gpg or ppm but gpg is the most commonly used measurement. 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.

Hard water usually requires water softening equipment to make it usable for a home. Formula to measure no of grains to be removed. 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. Work out 180 17 1 10 526.

Also called clark degree in terms of an imperial gallon. 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. A grain of water hardness is comparable to 1 7000th of a pound. Hard water has a noticeably unpleasant flavor but is still potable.

The result is the water hardness expressed in grains per gallon. For example let s say your water hardness is 15 gpg and you have 2 ppm of iron.