[Histonet] calibration of pH meter

[Susan Bachus]

This may sound simplistic, but it works for us:   whenever I need to use pH 
something, I quickly first dunk the electrode in the buffers above & below 
what I'm pHing (rinsing after each dunk, of course)--if the meter reads 
accurately I proceed to measure, if it's off by more than a few % I 
recalibrate before measuring.    It's true that a new electrode can stay 
well calibrated for long periods.    Susan
----- Original Message ----- 
From: "Jan Shivers" <shive003 <@t> umn.edu>
To: "histonet" <histonet <@t> lists.utsouthwestern.edu>; "Akemi Allison" 
<akemiat3377 <@t> yahoo.com>
Sent: Tuesday, February 01, 2011 1:36 PM
Subject: Re: [Histonet] calibration of pH meter


> We calibrate our pH meter every day that it's used, which can be daily 
> during heavy workload weeks, using multiple calibration buffers.
>
> Jan Shivers
> UMN Vet Diag Lab
>
> ----- Original Message ----- 
> From: "Akemi Allison" <akemiat3377 <@t> yahoo.com>
> To: "histonet" <histonet <@t> lists.utsouthwestern.edu>
> Sent: Tuesday, February 01, 2011 7:54 AM
> Subject: [Histonet] calibration of pH meter
>
>
>> Good morning everyone,
>>
>> I am curious how frequently you all calibrate your pH meter, 
>> particularly when you make up solutions for muscle bx's?  Do you do  it 
>> daily, weekly, or monthly?  I am trying to come up with an  acceptable 
>> standard in a clinical histology lab, verses a biotech  lab, which 
>> makes-up large quantities of reagents on a daily basis.
>>
>> Thank you in advance for your information,
>> Akemi
>>
>>
>> Akemi Allison BS, HT (ASCP) HTL
>> Director
>> Phoenix Lab Consulting
>> Tele: 408.335.9994
>> E-Mail: akemiat3377 <@t> yahoo.com
>>
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>
>
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