Finding ultra-pure water locally...

To my knowledge the purest water (h2o, nothing else) is from a reverse osmosis filter. Aquarium stores sell it as it is used to top off salt water / reef tanks as water evaporates, but adds no minerals, chemicals, or anything else that may hurt the tank. They call it RO water, and in my area I pay about 50 cents per gallon.

Regards, Alex

If I were you I would investigate a reverse osmosis system for your home from a local vendor that installs on demand RO systems for drinking water. You could have a tap installed straight off the unit so the water is not traveling through household plumbing. I know that lab grade RO systems provide water that is much, much, better than any water that can be produced by distillation. I assume the home units are pretty good too. Purified water, once its dechlorinated, can go septic pretty quickly, so you want a system that produces it as you need it.

HDM, any idea about difference between 9800-1 and 9800-5 grades of Reagent grade water?

I looked on the web and there are several companies that sell this.

Hi Albert: I just did a quick web search, coming up with Nerl Diagnostics Reagent grade with those numbers on the Nerl website without pricing and another website offering the Nerl water for sale with pricing.

If I'm not mistaken and reading the priced website properly there is no difference between the -1 and the -5; those numbers appear to be product numbers specifying the amount of water and number of containers (ie. 4 x 32 oz bottles vs 1 x 1 gallon or 5 gallon for example) but the reagent grade water appears to be the same whether -1, -3 or -5.

That being said, the Nerl site appears to show three grades of water with High Purity appearing to be the lowest, the Reagent Grade next and the "best" being described as "Safe and Sure Ultrapure Water". Unfortunately I could not find any pricing on the Nerl website or any other website that offered the "Safe and Sure". So that might warrant a bit more investigation and if the price was not outrageously more than the Nerl Reagent Grade (I would expect that it probably wouldn't be, at least in audiophile terms!), might be the one to go for.

Hdm

Makes sense, the ad I found list 4 gallons in a case and a price of $105.95. and I can't figure if that gets all four gallons.

If it turns out to be $423.80 plus shipping for four gallons I will be forced to pass. I'm going to call tomorrow and ask for clarification.

FYI, The text says:
Our Price $105.95
Size 1 gallon
Qty/CS 4
Unit Case of 4

I appreciate your input and clarification. Also hope this ultrapure grade of water does not turn out to be $105.95 a gallon.