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Old 08-28-2013, 02:13 PM   #31
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When my DO meter worked, this is the data I collected.



This chart is for 5.25-5.5 gal batches in a 6.5 gallon carboy oxygenated with a .5 micron stone. They are listed chronologically, not by OG or temp or time so you have to study the data for a few minutes. There are too many dependents to graph it out.

The measurements shown on that table were the only ones I got from that meter before it wouldn't calibrate anymore. I was pretty disappointed with it. It is the older Milwaukee model that the MW600 replaced.

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Old 09-04-2013, 03:57 PM   #32
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Quote:
Originally Posted by dstar26t
When my DO meter worked, this is the data I collected.

This chart is for 5.25-5.5 gal batches in a 6.5 gallon carboy oxygenated with a .5 micron stone. They are listed chronologically, not by OG or temp or time so you have to study the data for a few minutes. There are too many dependents to graph it out.

The measurements shown on that table were the only ones I got from that meter before it wouldn't calibrate anymore. I was pretty disappointed with it. It is the older Milwaukee model that the MW600 replaced.
Wow, look at the 1.102 OG! Brew strong!

I got all my gear assembled. Going to brew this weekend a cream ale (BM's cream of three crops recipe). Hopefully will be my first time brewing with new system.
Medical E tank and pediatric regulator, SS wand with sintered stone from old setup (Williams brewing), and MW600 oxygen meter.

Got to learn how to use the oxygen meter. Is there a need to stir the wort while oxygenating, or just swirls the wand around a bit, or does this not matter?
Do you let it rest for a period of time after oxygenating before pulling a sample to test, in order to get a representative sample of the DO, or do you pull the sample immediately?

Thanks!

TD
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Old 09-05-2013, 12:53 PM   #33
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I move the wand around a bit at the bottom of the fermenter but I really doubt it makes a difference.

You can pull a sample right away but more importantly, pitch immediately after seeing a reading you like. The DO level will change quickly. The yeast will also uptake the DO quickly. For big beers, I like to re-oxygenate after a few hours. Gone up to 1.115 with good results.

Make sure to read the manual

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Old 09-18-2013, 04:48 PM   #34
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I've been using a 2 micron stone, a medical regulator set at 3 LPM for 30-60 seconds, depending on type, gravity, etc. According to your formula,

time = (0.00265 * ppm * volume) / flowrate

if I want 10ppm, for 5 gallons, at 3 LPM i'd flow for .044 minutes, or 2.65 seconds. That can't be right.

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Old 09-20-2013, 11:02 PM   #35
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Got this via Craigslist for $25, Told the guy if he would deliver to work I'd give him $50.

Turned out, it had 2000psi.


My gas place, Holston, just south of Louisville does both swap, and fill while you wait. I'm tickled.

It came with tank, regulator. and cart. Also a nose hose but I chucked it.

Nipple on the regulator fits beer line, which fits the stone.

pb

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Old 09-21-2013, 12:39 AM   #36
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Any of you guys that are giving up on the red tanks want to sell me your old regulator? Send me a PM if interested.

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Old 09-21-2013, 12:42 AM   #37
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Any of you guys that are giving up on the red tanks want to sell me your old regulator? Send me a PM if interested.
I'm holding on to mine as a backup to hold me over when the big tank runs out.

pb
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Old 09-21-2013, 11:16 PM   #38
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Any of you guys that are giving up on the red tanks want to sell me your old regulator? Send me a PM if interested.
that's very generous of you to refer to that little black knob as a regulator it turns the gas on or off, no regulation involved. i'll look in my garage to see if i still have mine, i may have thrown it away, if i find it i'll send you a pm.
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Old 09-21-2013, 11:45 PM   #39
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How are you guys cleaning your porous stones?

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Old 09-21-2013, 11:57 PM   #40
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How are you guys cleaning your porous stones?
i have a stainless steel wand with a stone on the end. i used to boil it but now i just hit it with star san before it goes into the wort then do then same afterwards.
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