[Histonet] calibration of pH meter

[Amos Brooks]

Hi Akemi,
     I calibrate every other day that it is in use (Mon, Wed, Fri). I would
do it more often if it were required. As it is there is very little drift
from day to day. I have noticed more drift if I don't use it one day and it
goes to day three. If I'm making something up that I know to be extremely
finicky I calibrate it again just for good measure. Honestly calibration
should be so routine that it is almost automatic.

Amos

On Tue, Feb 1, 2011 at 12:22 PM,
<histonet-request <@t> lists.utsouthwestern.edu>wrote:

> Message: 12
> Date: Tue, 1 Feb 2011 05:54:26 -0800
> From: Akemi Allison <akemiat3377 <@t> yahoo.com>
> Subject: [Histonet] calibration of pH meter
> To: histonet <histonet <@t> lists.utsouthwestern.edu>
> Message-ID: <6D995FF4-53C4-4C83-8A41-73E848C0F3CA <@t> yahoo.com>
> Content-Type: text/plain;       charset=US-ASCII;       delsp=yes;
>  format=flowed
>
> 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
>