Author Topic: Lactic Acid measurements  (Read 896 times)

Offline flbrewer

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Lactic Acid measurements
« on: February 06, 2016, 01:30:10 PM »
Looking at Bru'n Water and I see that this recipe calls for .35ml of lactic acid to be added to the sparge water. How would I measure this small amount of lactic acid? Even with small syringes, they are measured at 1ml increments.

Would I need to convert to UL and use a pipette?
Cheers!
« Last Edit: February 06, 2016, 01:32:10 PM by flbrewer »

Offline mabrungard

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Re: Lactic Acid measurements
« Reply #1 on: February 06, 2016, 01:43:50 PM »
That small amount says you don't need to add any acid. It sounds like your water alkalinity is already very low. RO?
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Offline Wort-H.O.G.

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Re: Lactic Acid measurements
« Reply #2 on: February 06, 2016, 02:56:40 PM »
as Martin said, probably don't need it at that amount.

I use a 10ML graduated cylinder that makes it easier for seeing smaller increments. you can also weight it with gram scale. 1ml 88% lactic acid = 1.21 grams .
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Offline flbrewer

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Re: Lactic Acid measurements
« Reply #3 on: February 06, 2016, 03:32:32 PM »
That small amount says you don't need to add any acid. It sounds like your water alkalinity is already very low. RO?

That's right Martin, it's RO.

Offline HoosierBrew

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Re: Lactic Acid measurements
« Reply #4 on: February 06, 2016, 03:38:11 PM »
That small amount says you don't need to add any acid. It sounds like your water alkalinity is already very low. RO?

That's right Martin, it's RO.


You don't need to add any acid to RO sparge water. There's no alkalinity in RO to neutralize. The mash is different because your grist (depending on it makeup) can produce a higher pH than desired, which you then sometimes need to reduce with acid. No worries.
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Offline mabrungard

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Re: Lactic Acid measurements
« Reply #5 on: February 06, 2016, 04:11:53 PM »
Sorry about that artifact regarding acid in sparging water in the Bru'n Water software. If the water already has less than 25 ppm alkalinity, then sparging water does not need to be acidified. That small amount of acid that the program is reporting, is a rounding error. I need to put another bit of code in there to zero out that artifact.
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Offline denny

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Re: Lactic Acid measurements
« Reply #6 on: February 06, 2016, 04:39:45 PM »
I use a small syringe to measure acid.
Life begins at 60.....1.060, that is!

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Offline santoch

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Re: Lactic Acid measurements
« Reply #7 on: February 06, 2016, 07:10:08 PM »
I use a small syringe to measure acid.

Of course you do.

You grew up in the '60s

;-)
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Offline toby

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Re: Lactic Acid measurements
« Reply #8 on: February 06, 2016, 07:50:50 PM »
Looking at Bru'n Water and I see that this recipe calls for .35ml of lactic acid to be added to the sparge water. How would I measure this small amount of lactic acid? Even with small syringes, they are measured at 1ml increments.

Unless you're using a 1mL syringe.  Some of us have pets small enough to require those from time to time.

http://craftycreatures.com/forferretsonly/health/syringe_1cc.html

Offline denny

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Re: Lactic Acid measurements
« Reply #9 on: February 06, 2016, 08:11:06 PM »
I use a small syringe to measure acid.

Of course you do.

You grew up in the '60s

;-)

:)

Yeah, but we didn't use them then.  This one came with my Zymatic.
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Offline erockrph

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Re: Lactic Acid measurements
« Reply #10 on: February 07, 2016, 05:49:20 AM »
I use a small syringe to measure acid.

Of course you do.

You grew up in the '60s

;-)
Nobody use the brown lactic....

I do have some 1cc syringes that can measure to the hundredth of an ml, but as others have said, if you need that small of an amount you probably can make do without any. I normally use a 5cc syringe with 0.2 ml graduations to measure my acid additions.
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Offline mainebrewer

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Re: Lactic Acid measurements
« Reply #11 on: February 07, 2016, 11:55:21 AM »
I dilute my 85% phosphoric acid down to a lower concentration and use a 5 mL pipette to measure.
It just makes it easier to measure out the smaller quantities, at least for me.
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Offline Steve L

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Re: Lactic Acid measurements
« Reply #12 on: February 07, 2016, 05:37:26 PM »
I use a TB syringe. Pretty easy to measure small amounts.
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Offline brewinhard

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Re: Lactic Acid measurements
« Reply #13 on: February 07, 2016, 10:54:18 PM »
I use a small syringe to measure acid.

Of course you do.

You grew up in the '60s

;-)
Nobody use the brown lactic....

Uhhhh....Too late for that one my good man!  ;)