What came in the mail for you today?

[doug293cz]

A dissolved oxygen meter bargain 40 bucks, brand new. Just got to work out how and what to use it for.
View attachment 764431

You can use this to check oxygenation of beer at yeast pitch, where you are looking for 10 - 12 mg/L (ppm) O2 (IIRC.) But, it is not useful for fermented beer where you are looking for 0.1 mg/l, or less. The stated accuracy (from the Amazon listing) is: "Accuracy: ±0.4mg/L." For finished beer, you need an accuracy of about 0.01 mg/L, or better.

Brew on

 

[DuncB]

@doug293cz
Thank you for that. Yes it's parts per million accuracy not billions as would be needed for finished beer. It's always been guesswork for me with the aeration stone and oxygen cylinder so that is a great idea.
With my closed end of ferment and closed transfer into late ferment purged kegs I'm likely to get a consistent reading of 0 or 0.4 mg/L.
Thank you again.

 

[Erik the Anglophile]

Yesterday I got a 60L fermentation bucket to store base malt in , 2x16L buckets for weighing up and storing the malt I mill the night before brewday.
Also 2 pack each of d-180 and d-90 candi syrup, and a 25kg sack of Crisp Maris Otter.

 

[Erik the Anglophile]

Oh, and 4 wood tap handles.

 

[NewJersey]

1lbs of cascade and a 1lbs of centennial. 2021
Let's get old school!

 

[hout17]

Not beer related but one of my other hobbies can't wait to get in to this. Please note the carboy in the upper left hand corner though lol.

 

[Rish]

Got this to do partial mash/steep and small batch AG. Anybody using one have any words of wisdom for me. Come to think of it, maybe I should have asked before I bought it!

 

[JAReeves]

This is probably a "DOH!" moment, but I received and planted my first Neomexicanus Medusa hop rhizome today. They do survive the New Mexico temps, sooo...why did it take me years to try this out?

 

[BongoYodeler]

Impatiently waiting for my rhizomes to arrive....

 

[Erik the Anglophile]

Same here...

 

[jcav]

I got a new tri clover sanitary valve for one of my fermenters. I also got a flare barb to attach Eva Barrier tubing from the valve to my kegs when filling with beer.

 

[Brewin’&Qin’]

Sorry bad at taking pictures, and not technically delivered since I actually picked them up. Taprite Dual Body Regulator, gas and liquid quick connects, several doutight fittings, keg lube, 1 oz citra and 1 oz Centennail from Bobby at Brewhardware. Thanks Bobby.

 

[Hoppy2bmerry]

Some German hops.

 

[NitrogenWidget]

1 lb of Citra from yakima.

 

[Scout]

Today I went out to eat, and came home to find my grain mill and new to me corny were delivered.

 

[Hoppy2bmerry]

After oxidizing a batch of competition beer due to splash caused by stiff tubing
10 feet of 3/8 silicone.

 

[JAReeves]

Yesterday a Pinot Noir vine, had to get it in the ground before the sun set. Trying to find the right hops and grapes to grow here in near the L.A. beaches. The Muscats are going wild.

 

[doug293cz]

After oxidizing a batch of competition beer due to splash caused by stiff tubing
10 feet of 3/8 silicone.View attachment 765318

Silicone is the absolute worst tubing material for preventing oxygen diffusion from the air into the beer/wort inside.

Brew on

 

[El Whedo]

Why is silicone so bad for preventing oxygenation?

 

[RyPA]

On the Pill

 

[Mr. Vern]

Why is silicone so bad for preventing oxygenation?

It is permeable, all rubberized tubing has a diffusion factor which allows gas to travel through the tube wall. While it easily retains liquids, the tubing has a slow rate of diffusion allowing O2 to enter.

Even barrier bottle caps have a low rate of diffusion, gas is always trying to reach equilibrium and will migrate.

 

[El Whedo]

Thank you for that info.

If ALL rubberized tubing allows gas to pass (lol... sorry...) is silicon worse than other materials? I'm asking because I have always liked silicone and used it for not shedding plasticisers, and it's ability to last and last.

 

[doug293cz]

Thank you for that info.

If ALL rubberized tubing allows gas to pass (lol... sorry...) is silicon worse than other materials? I'm asking because I have always liked silicone and used it for not shedding plasticisers, and it's ability to last and last.

Yes, silicon is the worst. It's diffusion coefficient for O2 is 10 - 100 X higher than other common polymers.

It's ok for plumbing for wort (unless you are going full LoDO), but should not be used with finished beer, especially hoppy beers.

Brew on

 

[El Whedo]

Thank you kindly for the info!

 

[govner1]

The specialty grains, hops and yeast for my Märzen

 

[Hoppy2bmerry]

Silicone is the absolute worst tubing material for preventing oxygen diffusion from the air into the beer/wort inside.

Brew on

Well damn! The tubing I had used had gotten out of position then basically made a fountain in the bottling bucket. Running some beer through silicon, but without splashing shouldn’t be nearly as bad. (I hope) I do thank you for sharing the information.

 

[JAReeves]

Riesling vines and Muscat of Alexandria vines. The Muscat was supposed to be a Cab Sauvignon. Oh well. It'll still be grapes mixed with my beer or mead, right?

 

[doug293cz]

Well damn! The tubing I had used had gotten out of position then basically made a fountain in the bottling bucket. Running some beer through silicon, but without splashing shouldn’t be nearly as bad. (I hope) I do thank you for sharing the information.

Yes, even the worst tubing is better than a fountain.

Brew on

 

[Northern_Brewer]

If ALL rubberized tubing allows gas to pass (lol... sorry...) is silicon worse than other materials? I'm asking because I have always liked silicone and used it for not shedding plasticisers, and it's ability to last and last.

This data table suggests silicone is ~130x more permeable to oxygen than polyethylene, and this article (worth a read) has polyethylene 80x more permeable than barrier beer line.

So yeah, silicone is fine for wort but barrier beer line is worth it for serving beer - if you can find it, Malt Miller is about the only place that has it in retail quantities in the UK.

 

[JeffersonStateBrewing]

Arrived yesterday:

3 SSBrew tech brewcubes, 3 perforated lower shelves, one leg extension set and an e-controller mounting arm/bracket.

The electric brewing set up is almost compete