Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > My mash ph seems too low, what should I do?

Reply
 
LinkBack Thread Tools
Old 03-04-2013, 03:57 PM   #1
mojo_wire
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Milwaukee, WI
Posts: 203
Liked 27 Times on 18 Posts
Likes Given: 5

Default My mash ph seems too low, what should I do?

Doing a Belgian pale ale with 8 lbs of grain and 1.5 lbs of sugar.

I checked the ph of my mash and it seems to be 5.0. I used test strips that I'm sure aren't the most accurate in the world but every time I've ever used them they have matched up with a 5.4 ph. I'm a little embarrassed to admit that the grains I'm using were crushed a few months ago, so I think that might be the problem. My temps are okay.

If I am in fact mashing with a ph that is too low is there any fix necessary? I assume this will thin the beer out and I could add some maltodextrine. I can also add some DME if necessary but I done have a refractometer, so I'm not sure how much to add. I also don't have iodine, so I'm just assuming that conversion is occurring.

RDWHAB?

__________________
mojo_wire is offline
 
Reply With Quote Quick reply to this message
Old 03-04-2013, 04:01 PM   #2
mojo_wire
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Milwaukee, WI
Posts: 203
Liked 27 Times on 18 Posts
Likes Given: 5

Default

I also have some amalyse enzymes, which I've never used before, but if that might be useful I'm all ears.

__________________
mojo_wire is offline
 
Reply With Quote Quick reply to this message
Old 03-04-2013, 04:10 PM   #3
Wynne-R
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Texas
Posts: 891
Liked 96 Times on 62 Posts
Likes Given: 75

Default

There is considerable experimental evidence that test strips read .3 pH low on mashes. http://braukaiser.com/wiki/index.php/An_Evaluation_of_the_suitability_of_colorpHast_str ips_for_pH_measurements_in_home_brewing

So, with the fudge factor your 5.0 is pretty good, but the 5.4 is a little worrisome. In general too low is better than too high. I’ve had batches at 5.0 on a pH meter and they were fine, maybe a little acidic on the stomach.

__________________
Wynne-R is offline
 
Reply With Quote Quick reply to this message
Old 03-04-2013, 04:42 PM   #4
mojo_wire
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Milwaukee, WI
Posts: 203
Liked 27 Times on 18 Posts
Likes Given: 5

Default

Thanks. I'm going to assume my test strips are getting old.

RDWHAB it is. Never failed me before.

__________________
mojo_wire is offline
 
Reply With Quote Quick reply to this message
Old 03-05-2013, 01:48 AM   #5
tgmartin000
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2011
Location: Denver, CO
Posts: 983
Liked 62 Times on 50 Posts
Likes Given: 17

Default

Fyi a bit of baking soda will bring up your mash pH.

What temp did you test at? That makes a difference.

__________________
tgmartin000 is offline
 
Reply With Quote Quick reply to this message
Old 01-12-2014, 01:27 AM   #6
Davethebrewer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: Faribault
Posts: 5
Likes Given: 2

Default

Graduate to a good pH meter. The strips are not accurate. Also, it depends on the temp the equipment is calibrated at. This is often around room temp so you must add about .3 for a mash temp of 150. So at 5 you may be a very nice 5.3. I would worry about 5.4 which goes to 5.7.

__________________
Davethebrewer is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Conveting a Single Infusion Mash to a Hochkurz Double Decoction Mash DSmith Brew Science 5 09-20-2012 02:57 PM
Chart of mash temps and water/grain mash ratio by style kellzey All Grain & Partial Mash Brewing 8 08-15-2012 02:47 AM
Funky Saison recipe (partial mash w/sour mash) todd1234 Recipes/Ingredients 2 01-19-2012 06:30 PM
partial mash.OG,break material,mash tun efficiancy questions dzlater All Grain & Partial Mash Brewing 9 07-07-2008 12:15 AM
How much mash can a mash tun mash? Need Help for Tomorrow's Brew! ryan_pants Equipment/Sanitation 3 02-11-2007 01:44 AM