126 replies to this topic

[Purple Grin Winery]

I documented Jay's method a little further. It seems sourcing the components or chemicals was the most challenging part of getting this implemented.

As always, input requested. I'd be happy to keep it updated to reflect any new experience.

Scott

 SO2_Analysis_Aug_8_2008.pdf   133.17K   1517 downloads (updated 10/23/08)

[Jay-CastleRock]

Scott's the man. I think this will go a long way in making it easier and usefull.

[Andy in SoCal]

Damn. I thought you were offering free testing.

Andy

[NorthernWiner]

One note on the phosphoric acid. This can be a little hard to find. Scott mentions using grout haze remover in his very helpful document but, if you can't find that either, one of my local brew shops also sells phosphoric acid through mail order...

http://www.midwestsu...spx?ProdID=4634

[Purple Grin Winery]

Damn. I thought you were offering free testing.

Andy

Yes, I will offer anybody free SO2 testing......send a full bottle!

Scott

[Andy in SoCal]

Yes, I will offer anybody free SO2 testing......send a full bottle!

Scott

So you can identify Free SO2 levels by taste now?

Now that's a supertaster!

Andy

[Hammered]

Scott,

Very well done. I'll be trying this weekend, now that I got a gram scale so I can mix up some .1N NaOH. I was able to get all of the chemicals through Presque Isle without any hazmat fees and pretty reasonable prices. Also, shipped across the country in just a few days. Great service.

My daughters got me all the flasks, corks, burette, and tubing for Christmas from Homescience.com

I'll post some photos of the process this weekend. Thanks again!

[geolofisto]

Scott,

Nice looking document; thank you for putting it together in an easy to understand format. The photos always help too. Jay's right, you da man.

[rwintle]

I documented Jay's method a little further. It seems sourcing the components or chemicals was the most challenging part of getting this implemented.

As always, input requested. I'd be happy to keep it updated to reflect any new experience.

Scott

On the order form, you have 2 of the same type of test tubes. In the pictures you have a smaller and a larger/longer.

I assume that if we have ordered the same type (both longer), we would want to cut the glass tub to go to the bottom of both, correct?

Thanks,

--Rod

[Purple Grin Winery]

I assume that if we have ordered the same type (both longer), we would want to cut the glass tube to go to the bottom of both, correct?

I simply didn't have a matching set. The second impinger musn't necessarily be as long as the second test tube, as long as the vinyl tubing is long enough such that the tip rests on the bottom. I was trying to keep the total length under 12-inches, so that one could get two tries at the glass work with the 24-inch length sold.

Scott

[mokadir]

Very close to the setup I settled on. My chemicals were from PIWlNE also, my "glassware" from CYNMAR, the stoppers were from LHBS, and pump from local pet supply. My total costs were more because I ended up buying extra stuff to make sure it would work.

[jackie]

Thanks alot. I think even I can do this.

[jackie]

Anyone know the shelf life (in general, stored in a cool/dark place) for the chemicals before they significantly deteriorate? I'm assuming either 6 months or a year.

[Purple Grin Winery]

Jon Iverson states that the indicator is light sensitive, with a 6 month shelf life. So "store it in a cool, dark place". I still love Tom Petty stuff.

Good thing we found some cheap indicator.

[jackie]

Thanks. Any idea about the life of sodium hydroxide and phosphoric acid?