Finding ultra-pure water locally...

With regard to storage, I ran across the following from a Wikipedia article on Dionized Water:

"Laboratory grade ultra pure water cannot be stored in glass or plastic containers because such materials leach contaminants at very low concentrations into the water. Storage vessels made of silica are used for less demanding applications but for highest purity uses, containers made from ultra pure Tin are used."

With regards to buying, to follow up on Hdm's earlier posts, the numbers 9800-1, -3, -5, appear to be product numbers for different packagings of Reagent Grade Water from NERL Diagnostics, a division of Thermo Scientific. Likewise the "Safe & Sure Ultra Pure Reagent Grade Water" appears to be a higher grade and has a different product number. It doesn't seem to be sold on-line by the various supply houses, however one can get a quote for it from Thermo Scientific

If that is the case, MedicalMailOrder.com is offering the 20 liter (~5 gallon) 9800-5 Reagent Grade water at $25.32 plus shipping ($8.27 UPS ground to my zip in upper Midwest where it is a balmy 3 degrees F.)

I'll find out how much fun is a five gallon box of frozen water. (Not just any water, Mr. Bond, reagent grade laser water.)

Thanks Jtimothya, good data.

Regarding:

If that is the case, MedicalMailOrder.com is offering the 20 liter (~5 gallon) 9800-5 Reagent Grade water at $25.32 plus shipping ($8.27 UPS ground to my zip in upper Midwest where it is a balmy 3 degrees F.)

Prices vary by packaging with the gallons costing several times what the larger packages go for. The 32 Oz. bottles are a real killer, adding up to about one gallon for $64.00.

I can't explain why packaging cost varies so much, unless it's as much trouble to get clean packaging and ship as it is to make the water :^).

I thought the gallons I got were a good compromise as the manufacturer says the expire date begins once the cap comes off. Wish we could buy the 32 Oz. size bottles equalling 5 gallons at that same bargain price.

I was worried about the issue of splitting this with my audio buddies if I bought the 5 gallon container. Splitting it up into other less than perfect containers may ruin the purity.

It appears I bought the second best grade possible. I'm glad you found that next level (the ultimate level??)

I'm going to call those people and see how much that "Safe & Sure Ultra Pure Reagent Grade Water" costs, but I'm almost afraid to ask.

Albert: My guess is that the higher grade "Safe and Sure" will not be much more expensive. This product is being marketed for scientific use and not to audiophiles.

Once the audiophiles start to buy it, someone else will, of course, repackage it and sell it for 5X the money.

My theory is that the "Safe & Sure Ultra Pure Reagent Grade Water" could be a marketing niche than a unique product. First off, no one is selling it on-line which makes me wonder about demand. Secondly, I think the key words are 'Reagent Grade Water' - those words *I'm speculating* have an "industry standard" meaning, wherease the additional "Safe & Sure Ultra Pure" may not - at least I certainly don't see the latter terms in use beyond the seller. But that may not mean much, although, neither the NERL nor Thermo Scientific site specifies a difference other than claiming the one is "our highest grade".

I would like to know the physical difference between the 'Safe & Sure Ultra Pure' product and the other Reagent Grade Water. And of course .... can we hear a difference, and is it a positive improvement. Heh. Listening to water ... you got ears only an audiophile's mother could love. :-)

The little I know and the information I have would suggest that there would indeed be a difference between the two products; my guess is that it would probably involve higher levels of ultrafiltration. Nerl themselves appear not to apply the "ultrapure" name to their reagent grade water.

That being said, I would expect the reagent grade to be very good and your point as to whether one could "hear" the difference between the reagent grade and the "Safe and Sure Ultra Pure" is well taken.