Phosphoric Acid

[HillbillyBill]

I'll make this very simple. (KISS)
Can anyone tell me where I can get some good concentrated phosphoric acid? I hate to buy the pH Down when all I need is the acid. I really don't need to pay someone to dilute it and put it in a labeled bottle for me.
Thanks...
Bill

[GigZ-16]

Your looking to dilute Phosphoric Acid and pour it into your growing medium to lower the pH? Why not go for other easier remedies? I have a list of them in the guide in my sig. As for obtaining Phosphoric Acid, I believe it is done commercially by either adding sulfuric acid to Calcium Phosphate, or by burning pure Phosphor to produce Phosphorus Pentoxide which is then dissolved in diluted Phosphoric Acid. The last method makes it very pure.



(Sources = Wikipedia.org)

Good luck with that.

[G'kar]

Originally Posted by HillbillyBill

I'll make this very simple. (KISS)
Can anyone tell me where I can get some good concentrated phosphoric acid? I hate to buy the pH Down when all I need is the acid. I really don't need to pay someone to dilute it and put it in a labeled bottle for me.
Thanks...
Bill

I get mine from the hydro store or online, £2.50 for 250ml, 81% Phosphoric Acid.

[HillbillyBill]

Thanks guys... I am trying to avoid the labwork, but who knows? I am checking some chemical supply retailers and actually may end up going to the Hydro store in the end. I use sulfuric acid during the vegetative stage, but I want phosphoric acid for the flowering stage.
Still looking...
Bill

[GigZ-16]

Originally Posted by HillbillyBill

Thanks guys... I am trying to avoid the labwork, but who knows? I am checking some chemical supply retailers and actually may end up going to the Hydro store in the end. I use sulfuric acid during the vegetative stage, but I want phosphoric acid for the flowering stage.
Still looking...
Bill

why exactly?

[HillbillyBill]

A couple of months ago I heard of a dairy cleaning product called Monarch CIP Acid which was supposedely phosphoric acid based and used to clean stainless steel dairy farm products... milking machines, storage tanks, etc.
My search had been fruitless until yesterday when I ran across a similar product marketed by the Dairyland Brand as STEROSOL MILKSTONE REMOVER AND ACID RINSE. It most definitely is food grade and is non foaming. The main ingredient is Phosphoric Acid (75% solution) plus surfactants, dye, and water. The final percentages work out to 56.33% phosphoric acid and 43.67% of water, surfactants, and orange dye.
I found my Milkstone Remover at my local Tractor Supply Store (after doing a Google search). I even found some guys in the U.K. talking about it definitely being the cheapest way to buy phosphoric acid.
Soooo..... anyone want to guess the price for a gallon in the US?
$7.83 per GALLON! I got 2 gallons... this stuff cleans lime and hard water deposits off of your shower head, etc. Check your local farm supply store and ask for Milkstone Remover. You will be glad you did.
Thanks all...
Bill

[bud_wiser]

Look In The Solvent Section Or In The Plumbing Section At Home Depot I Found Some Phosphoric Acid Its Called Phosphoric Plus Or Something Like That