Dowflake in Florida??
- Thread starter onano
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cham
New member
If you want to use Dow products I would suggest getting it from Twopartsolution.com . He has proven to have pre 2007 DOW.
As of Jan 1 2007 Dow no longer sells Bromide. They used to extract it from their calcium chloride leaving a pretty pure form of Ca Cl. Since they are no longer selling it they are obviously not removing it from it anymore and now contains alarming levels of it.
Although Bromide is natural in seawater it is not natural at the extreme levels that it is in Dow's Ca cl. It can convert into bromate that is toxic.
There are mfg's of Ca cl that do not have the Bromide levels that Dow now has and we should see some new names come to light soon.
As of Jan 1 2007 Dow no longer sells Bromide. They used to extract it from their calcium chloride leaving a pretty pure form of Ca Cl. Since they are no longer selling it they are obviously not removing it from it anymore and now contains alarming levels of it.
Although Bromide is natural in seawater it is not natural at the extreme levels that it is in Dow's Ca cl. It can convert into bromate that is toxic.
There are mfg's of Ca cl that do not have the Bromide levels that Dow now has and we should see some new names come to light soon.
cham
New member
Just be careful of what you choose to use. Research needs to be done to make sure there are no minor trace elements in the material such as Bromide.
I have the MSDS sheets for the latest batches of Dow/Peladow peadlow materials (exact same as Dow flake, just less water) and it reads a 97-98% purity of calcium chloride. We know that it does contain very high levels of Bromide, it does NOT list it on their MSDS sheet.
The chemistry mods say that the tests that need to be done are very expensive and lengthy. They themselves did not know about the new 2007 Bromide issue until I tripped across it while reading through Dow's website.
The guys over at Twopartsolution are all over it & have spent alot of time & effort insuring their products are right. They are also about the same price as getting these products from local pool shops. You just have to buy a bit more of it.
HTH
I have the MSDS sheets for the latest batches of Dow/Peladow peadlow materials (exact same as Dow flake, just less water) and it reads a 97-98% purity of calcium chloride. We know that it does contain very high levels of Bromide, it does NOT list it on their MSDS sheet.
The chemistry mods say that the tests that need to be done are very expensive and lengthy. They themselves did not know about the new 2007 Bromide issue until I tripped across it while reading through Dow's website.
The guys over at Twopartsolution are all over it & have spent alot of time & effort insuring their products are right. They are also about the same price as getting these products from local pool shops. You just have to buy a bit more of it.
HTH
fvandijk
Premium Member
cham
New member
From TwoPartSolution the 15lb bucket of Ca is $24 plus $13 shipping. Thats $37 total. I paid just over $30 for "hardness plus" from Leslies Pool Supplies locally, so the price is actually pretty comparable.
Even if it were 10 or 20 dollars more, 15 lbs is a pretty good supply of calcium. For $20 its just not worth trying to beat the system IMO. I'd need to see a huge pay difference to roll the dice on a system that I've spent so many thousands on.
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