From: Sandy King (sanking@clemson.edu)
Date: 12/16/02-05:03:24 PM Z
John,
The one that has worked for me is the "pH Wand by Oaklon, Model
#35624-35. As best I can recall this instrument was purchased from
Bryant Laboratories in San Francisco.
I also have the Oaklon pHTestr 1, but it is not as reliable, perhaps
because I have not faithfully followed the electrode clean-up
procedures.
Sandy King
>Sandy,
>
>Inquiring minds are dyeing to know the make and model of that PH meter.
>
>John Roseborough
>www.pyro4hire.com
>
>----- Original Message -----
>From: "Sandy King" <sanking@CLEMSON.EDU>
>To: <alt-photo-process-l@skyway.usask.ca>
>Sent: Monday, December 16, 2002 8:07 AM
>Subject: Re: visualizing; mixing D-76
>
>
>>
>> Judy Seigel wrote:
>>
>> >
>> >
>> >Meanwhile, I note that Sandy and others are mentioning pH -- how are
>> >you/they measuring it? I found the strips (hyperion? or like that)
>> >unsatisfactory, not precise, aged quickly, etc. Bought a digital poker
>> >type instrument, but it was worse, inconsistent, slow & generally wiggy.
>> >Is there anything short of major outlay that works well?
>> >
>> >J.
>> >
>> >
>>
>>
>> I am measuring with a digital probe. But I have also found that the
>> results from these instruments to be somewhat inconsistent and
>> difficult to keep calibrated. However I finally found one that has
>> worked well for about 3-4 years now and is still giving consistent
>> results. And the good part is that it has a replaceable probe so that
>> if it ever goes bad, which is likely I a am lead to believe, it can
>> be replaced.
>>
>>
>>
>> Sandy
>>
>>
>> --
>>
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