Sourcing acid for titration

[Gudhjem]

Like many of us, I buy 0.1N HCL or sulfuric acid to use as titrant in my alkalinity monitors. I use it in both my Alkatronic (diluted 1:4) and in my GHL KH Director (straight 0.1N). I also use it in my titration rig to verify accuracy of testing. This is the stuff I've bought for years:


But it's out of stock at Amazon and has been for a while, in all sizes.

Amazon sells this:


but I don't trust it, since my titration standard indicates it's not 0.1N, but substantially stronger (the mfg makes no rep about tolerance to 0.1N)

I've tried a couple other places online, but they wont ship 0.1N HCL or Sulfuric acid to a residence, and the local labs I've checked (SF Bay Area) will only sell to a business.

Anyone have a lead on where to buy 0.1N (or 1.0N) HCL or sufuric acid?

EDIT: Looks like Amazon links aren't showing up. if not, first is the LabChem 0.1N HCL 4l (I"ve also used their sulfuric), the second (still available) is "Innovating Science" I think.

 

[Malcontent]

Maybe?

TAY-R-0627S-10-G

Taylor Sulfuric Acid N/10, 1 gallon Bottle (each)

www.novatech-usa.com

 

[Chuk]

Cole Palmer always has stuff like that. They’re pricy though, but do certify accuracy.

 

[Dan_P]

Like many of us, I buy 0.1N HCL or sulfuric acid to use as titrant in my alkalinity monitors. I use it in both my Alkatronic (diluted 1:4) and in my GHL KH Director (straight 0.1N). I also use it in my titration rig to verify accuracy of testing. This is the stuff I've bought for years:


But it's out of stock at Amazon and has been for a while, in all sizes.

Amazon sells this:


but I don't trust it, since my titration standard indicates it's not 0.1N, but substantially stronger (the mfg makes no rep about tolerance to 0.1N)

I've tried a couple other places online, but they wont ship 0.1N HCL or Sulfuric acid to a residence, and the local labs I've checked (SF Bay Area) will only sell to a business.

Anyone have a lead on where to buy 0.1N (or 1.0N) HCL or sufuric acid?

EDIT: Looks like Amazon links aren't showing up. if not, first is the LabChem 0.1N HCL 4l (I"ve also used their sulfuric), the second (still available) is "Innovating Science" I think.

Hach or Hanna

 

[Gudhjem]

Thanks for the replies.

Unfortunatly none of them paid off. Hanna does not offer a a certificate of analysis or promise any grade or accuracy for their reagent. Besides, it's not much cheaper than buying the manufacturer reagent. Cole Parmer and several others wont ship to a residential address (and some that are local wont allow a non-business to pick up).

It's easy to get 37% HCL (go figure), but I doubt the percentage is accurate enough to use as a reagent (after appropriate dilution). I'll approximate the dilution to get 0.1N and run it through a titration using my 8.0dKH standard until I find the right acid/RODI ratio to get a reasonably accurate 0.1N acid.

 

[Randy Holmes-Farley Verified Community Expert]

Hach sells an acid standard through Amazon that says it can deliver to me in 2 days.

Hach 1481253 Hydrochloric Acid Standard Solution, 0.10 N, 1 L​

 

[Gudhjem]

Hach sells an acid standard through Amazon that says it can deliver to me in 2 days.

Hach 1481253 Hydrochloric Acid Standard Solution, 0.10 N, 1 L​

Thanks Randy. Amazon doesn't show that to me. I can find it in a google search using your exact description, but the Amazon link fails. Probably some geographic restriction -- I'm in California.

 

[Randy Holmes-Farley Verified Community Expert]

Yes, it might be some sort of local restriction.

 

[reef_ranch]

I'm in California and ran into the same problem now that Amazon doesn't sell it any longer. I also could not get any of the lab supply companies to ship to my home or office. Fortunately, Coralvue will and at a similar shipped cost. Just bought this last week.

Alkalinity Testing Machine Concentrated Reagent

A concentrated reagent for the Alkatronic Alkalinity Controller. For every 1 part reagent, mix 4 parts RO/DI water. Every 1000mL of concentrate will produce 50000mL of solution.

www.coralvue.com

 

[Gudhjem]

I'm in California and ran into the same problem now that Amazon doesn't sell it any longer. I also could not get any of the lab supply companies to ship to my home or office. Fortunately, Coralvue will and at a similar shipped cost. Just bought this last week.

Alkalinity Testing Machine Concentrated Reagent

A concentrated reagent for the Alkatronic Alkalinity Controller. For every 1 part reagent, mix 4 parts RO/DI water. Every 1000mL of concentrate will produce 50000mL of solution.

www.coralvue.com

Thanks, forgot about that option