LODO Sodium Metabisulfite Dosage Spreadsheet

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Bryan R
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby Bryan R » Fri Jun 03, 2016 8:53 pm

I would assume it to be campden with Nameta since that's what we recommend.
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mchrispen
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby mchrispen » Sat Jun 04, 2016 10:27 am

It's there now. Hopefully the context with SMB is adequate to avoid confusion with K-meta Campden tablets.
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Feurhund
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby Feurhund » Sat Jun 04, 2016 1:22 pm

I have a 3 vessel setup and heat all my water at once. Pull in the mash water which I want to under let and then the left over water is used to heat the HERMS coil and then for sparge.

How should I add the SMB. My plan was to boil the water, cool through my plate chiller add SMB and then do the process, but how much SMB for my 20 gallons of starting water. A portion is technical the mash water and the rest is sparge.

Do I calculate how much mash water I will pull I.e 8 gallons (X amount of SMB) and then add SMB to treat to 12 gallons of sparge reservoir portion? Can I add it all at once.

Thank you for any guidance!
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mchrispen
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby mchrispen » Sat Jun 04, 2016 10:23 pm

I would suppose that you could add the SMB under the mash and underlet the grain-in. Then add the smaller sparge dose to the remaining sparge liquor. I am just not sure how quickly the SMB saturates and is effective in the mash water in this instance. Perhaps underletting slowly might increase the effectiveness with this process. I always treat my mash and sparge water differently with minerals anyway - so I treat both volumes seperately.

So if you know your target strike water, dose for that into the dry mash kettle, adding the false bottom and dry grist on top. Reserve the sparge water and dose that at the lower rate and return it under the mash water level.

Smarter people than me are here can probably shoot holes in that.
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby Feurhund » Thu Jun 09, 2016 8:21 pm

mchrispen wrote:I would suppose that you could add the SMB under the mash and underlet the grain-in. Then add the smaller sparge dose to the remaining sparge liquor. I am just not sure how quickly the SMB saturates and is effective in the mash water in this instance. Perhaps underletting slowly might increase the effectiveness with this process. I always treat my mash and sparge water differently with minerals anyway - so I treat both volumes seperately.

So if you know your target strike water, dose for that into the dry mash kettle, adding the false bottom and dry grist on top. Reserve the sparge water and dose that at the lower rate and return it under the mash water level.

Smarter people than me are here can probably shoot holes in that.


On further thought, I will add the sparge amount to the whole HLT amount and then add the extra necessary for the mash to the grain in the MLT and then underlet the mash liquor. That way the water coming in is treated and as the extra SMB gets dissolved it will protect the mash.

sound sane?
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Brandon
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby Brandon » Thu Jun 09, 2016 8:31 pm

Feurhund wrote:
mchrispen wrote:I would suppose that you could add the SMB under the mash and underlet the grain-in. Then add the smaller sparge dose to the remaining sparge liquor. I am just not sure how quickly the SMB saturates and is effective in the mash water in this instance. Perhaps underletting slowly might increase the effectiveness with this process. I always treat my mash and sparge water differently with minerals anyway - so I treat both volumes seperately.

So if you know your target strike water, dose for that into the dry mash kettle, adding the false bottom and dry grist on top. Reserve the sparge water and dose that at the lower rate and return it under the mash water level.

Smarter people than me are here can probably shoot holes in that.


On further thought, I will add the sparge amount to the whole HLT amount and then add the extra necessary for the mash to the grain in the MLT and then underlet the mash liquor. That way the water coming in is treated and as the extra SMB gets dissolved it will protect the mash.

sound sane?


The only issue I could foresee with this is if the SMB will hold out for the duration of time between mash and sparge and O2 doesn't start leaking back in. If you keep the HLT water sealed (capped) it should be right on (If I'm correctly interpreting what you're saying).
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby Feurhund » Thu Jun 09, 2016 9:07 pm

I have 20 gallon blichmanns and no real Cap solution yet (17.5"diameter) I would have the lid on and would recirculate under the liquid level. is that enough protection along with the SMB?

I think a better idea would be to forgo underletting the grain and just treating the mash water first and minimize splashing going in. I would be worried that the time it takes as I underlet the grain and before the SMB is dissolved would oxidize the grain, or would that be the best option.

if I do it that way, I can then just add the sparge dose to the HLT right before the sparge.
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby Brandon » Thu Jun 09, 2016 9:15 pm

Feurhund wrote:I have 20 gallon blichmanns and no real Cap solution yet (17.5"diameter) I would have the lid on and would recirculate under the liquid level. is that enough protection along with the SMB?

I think a better idea would be to forgo underletting the grain and just treating the mash water first and minimize splashing going in. I would be worried that the time it takes as I underlet the grain and before the SMB is dissolved would oxidize the grain, or would that be the best option.

if I do it that way, I can then just add the sparge dose to the HLT right before the sparge.


haha, you have the same MLT I have...that seems to be the most inconvenient kettle diameter! I am using aluminum foil wrapped around insulation. Also not ideal, but I figure better than going naked. And recirculate under the cap.

I treat the mash water while chilling from boil in my HLT and then underlet on the way in. But I have been no sparging so no later additions of sparge water.
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby Feurhund » Thu Jun 09, 2016 9:20 pm

If you no sparge, do you use the Mash water dosage for the whole mash volume?

I could no sparge with my setup, but haven't before, so will have to accept the variable efficiency and guess.
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Brandon
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Re: LODO Sodium Metabisulfite Dosage Spreadsheet

Postby Brandon » Thu Jun 09, 2016 9:39 pm

Feurhund wrote:If you no sparge, do you use the Mash water dosage for the whole mash volume?

I could no sparge with my setup, but haven't before, so will have to accept the variable efficiency and guess.


I've been doing a dosage for the entire mash volume....so ~4gm powdered SMB (whatever mcrispin's chart says).

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