another ph thread

[F_R_O_G]

when i measure the ph of my wort from 2 different test strips i get to different readings. my first reading from Precision Labs, Inc says I'm at 5.1. I also measured it with test strips from Whatman that says I'm at 5.7. what one am i suppose to believe? Precision Labs test strips are suppose to be for measuring wort but i'm not sure if there really that accurate. there only $6 at the LHBS the Whatman strips are ~$20 online. another thing is my water is just over 7ph, per water report, and i'm brewing a stout so i would expect high 5s (no pun intended)

anyone else have experience with either of these 2 test strips? I just need to know what one to trust.

 

[Yooper]

when i measure the ph of my wort from 2 different test strips i get to different readings. my first reading from Precision Labs, Inc says I'm at 5.1. I also measured it with test strips from Whatman that says I'm at 5.7. what one am i suppose to believe? Precision Labs test strips are suppose to be for measuring wort but i'm not sure if there really that accurate. there only $6 at the LHBS the Whatman strips are ~$20 online. another thing is my water is just over 7ph, per water report, and i'm brewing a stout so i would expect high 5s (no pun intended)

anyone else have experience with either of these 2 test strips? I just need to know what one to trust.

Neither one would be dependable, but I did hear that colorphast (think that's the name) are generally only .3 off.

 

[hophop]

Get a cheap meter. Mine is dead on and hasn't needed calibration in a year. $15.00 on amazon.


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[F_R_O_G]

how do you know it's dead on? is there some calibration fluid to test?

 

[Manzier]

Are you testing both at room temperature? Also it Doesn't matter what pH your brew water is, only the alkalinity and the salts that you are adding. I would not sure strips and get a pH meter.


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