105 replies to this topic

[positiveContact]

Do you have an RO filter/system?

Edited by Mando, 06 May 2020 - 06:39 AM.

[pkrone]

No, I just go fill up at the local water store. 9 bucks for 15 gallons.  A little pricey, but worth it.

[3rd party JKor]

Whenever I use lactic things never quite go as predicted for me.  Initially the mash pH was really low (like 4.7) so I added in a little bit of baking soda and way over did it for probably 5 minutes, 10 minutes max.  I'm guessing the pH was probably somewhere around 6.  mash temp is 153-154F.  I added some more lactic and got it back down to 5.3.

 

 

Are you sure about that?  Going from 4.7 to 6 would take a ridiculous amount of baking soda.

[positiveContact]

Are you sure about that? Going from 4.7 to 6 would take a ridiculous amount of baking soda.

As sure as my colorphast strips are anyway lol. I saw a color on those strips I've never seen before.

[3rd party JKor]

How much did you add?

[positiveContact]

2.6g, then I added 1.25mL of lactic acid.

[3rd party JKor]

When I punch the numbers into EZ Water it takes like 25+ grams for a 5 gallon batch to go from 4.7 to 6.

[positiveContact]

When I punch the numbers into EZ Water it takes like 25+ grams for a 5 gallon batch to go from 4.7 to 6.

 

LOL.  I dunno what I was seeing then.  weird stuff.

[denny]

As sure as my colorphast strips are anyway lol. I saw a color on those strips I've never seen before.

Man, don't use those.  You're probably better off doing nothing.

[positiveContact]

Man, don't use those.  You're probably better off doing nothing.

 

I dunno - they've at least reported something in the ballpark but yeah I agree that I should at least get a real meter.

[positiveContact]

is omega still the go to for ph meter for homebrewers?

[denny]

is omega still the go to for ph meter for homebrewers?

Milwaukee MW102 seems very popular

[matt6150]

is omega still the go to for ph meter for homebrewers?

I have omega phh-7011 and love it.

[HVB]

Milwaukee MW102 seems very popular

I had one and it was awful. So happy with my Omega.

[shaggaroo]

When I punch the numbers into EZ Water it takes like 25+ grams for a 5 gallon batch to go from 4.7 to 6.

2.6 g of NaHCO3 is 0.0309 mol of HCO3–... going from pH 4.7 to pH 6 in 19 L (i.e. ~5 gal) of water requires only 0.00036 mol of HCO3–. Jason are you sure EZ water isn't in milligrams? 

[3rd party JKor]

2.6 g of NaHCO3 is 0.0309 mol of HCO3–... going from pH 4.7 to pH 6 in 19 L (i.e. ~5 gal) of water requires only 0.00036 mol of HCO3–. Jason are you sure EZ water isn't in milligrams?

I don't think it's as straightforward as 1:1 dissociation.

[positiveContact]

I'm doing 10gal batches just so you guys know. And yeah, I think the response isn't linear even after accounting for the fact that pH is a logarithmic scale.

Edited by Mando, 09 May 2020 - 03:58 AM.

[positiveContact]

I have omega phh-7011 and love it.

Is the onega website the only source for these? I see they have 25% off right now.

[positiveContact]

oh never mind, that's only for "remote" devices which this would not be since it's under a foot long

has that general pH meter been determined to be the same thing yet?

Edited by Mando, 09 May 2020 - 04:44 AM.

[positiveContact]

https://www.amazon.c...ting/B001TOFRIG