It would help if you could define "hardness" and tell us what you are
doing. Often folks use hardness to mean calcium. There are ion-selective
meters to measure calcium. These meters are affected by other ions to some
extent. Without knowing what you are doing it's hard to say that an
ion-selective meter would work for you.
On Tue, 04 Jun 2013 12:48:59 -0400, email@example.com wrote:
I have a TDS meter, but according to it, our water softener isn't
doing much, but the chemical test shows that it is. The water
softerer company says that it takes out calcium, iron, and magnesium,
as you said, but not the other things, which is why the TDS meter
doesn't really measure water hardness.
On Tue, 4 Jun 2013 15:17:16 -0700 (PDT), " firstname.lastname@example.org"
I didn't know that, which explains why the TDS meter doesn't really
The water softener uses salt (sodium cloride), but I thought that the
ions stuck to plastic beads or pellets as the water goes through the
device. The plastic beads will get saturated with ions but then when
it regenerates with salt, that gets the ions off the plastic beads and
flushes them away (from my understanding).
Water softeners I am familiar have sodium zeolite. The sodium in the
zeolite can exchange places with calcium and similar ions in the water.
I forget which chemical law it is, but the concentration of sodium in
the water will become the same as the concentration of sodium in the
zeolite if the water is there long enough. So the zeolite slowly turns
into calcium zeolite. Flushing with sodium chloride in water turns the
zelite back to sodium zeolite. I believe sodium salts and resulting
products are soluble in water. Zeolite is like a sponge and has an
immense surface area.
I figured that out last year, but don't have the numbers handy. In
general, though, you would have to drink many gallons per day to get
enough sodium from softened water to causes someone on a low sodium
diet to exceed their limit.
But even that article admits it is talking about a worst case
situation - extremely hard water and a person with a severely
restricted diet. 126 mg in 2 liters isn't much for a normal person
with a 2300 mg daily recommended intake. I am not saying a person who
needs to avoid salt shouldn't make a reasonable attempt to avoid
softened water, but the websites that talk about it like it is a
horrible health hazard are being rediculous.
Then I guess that would be a 'yes' then. White bread is one of the
things I avoid because it is so high in sodium. The way my house is set
up, and this was done by the previous owners, is the softener is
bypassed for the outside faucets, a drinking water faucet, and the hot
water heater. That was because they just didn't like the taste of
I agree. When you realize what Bob calls slimey is just the feeling
your skin has when fully rinced, you can't live without it. I feel
sticky in the shower when the softener isn't working.
But, that is my opinion and nothing more. To each, their own.
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