Joe Sallustio wrote:

Reg,
Here is the FAQ posted to rec.crafts.winemaking regarding pH meters in
general. It is geared toward winemaking, but in general terms it's
really more about selecting and maintaining the right one for your
needs. No one wants to buy the wrong one and have to replace it.

A popular pen style version with winemakers is the Hanna pHep 3 if a
resolution of 0.1 units is acceptable, the pHep 5 if a resolution of
0.01 is needed. (There are LOTS of manufacturers out there, Hanna is
by no means the only one I would suggest; the FAQ lists several
websites.)

If that accuracy is unneccesary, litmus paper is a much less costly
alternative.
Hope this helps,
Joe

It sure does help, thanks much Joe.

What's your favorite type/brand of buffer solution? Do you prefer
premixed liquid or the tablet/capsule type?

--
Reg email: RegForte (at) (that free MS email service) (dot) com

Joe Sallustio wrote:

I like Hyrion capsules, you can get a kit with 10 each of pH 4, 7 and
10 for about $20.

All you have to do is mix a capsule with 100 ml of distilled water to
make your buffers, it comes with a preservative to add. They are
supposed to last up to 3 month, but mine start to grow mold at about 2
months. A 100 ml graduate is only about $5 for a decent glass
graduate. It's still pretty cheap no matter what. I get them from
Fisher Scientific but I'm from Pittsburgh, any decent chemical supply
house should carry them.

That's it then, I'm switching to the Hydrion capsules. I'll have
to rememeber not to store them near my vitamins...

Thanks for the outstanding info in that FAQ. I hadn't heard
about cleaning the probes with contact lens cleaning solution before.
That's been an issue for me because I test things that mess up
the tip (meat, cheese, etc).

--
Reg email: RegForte (at) (that free MS email service) (dot) com

Joe Sallustio wrote:

I like Hyrion capsules, you can get a kit with 10 each of pH 4, 7 and
10 for about $20.

All you have to do is mix a capsule with 100 ml of distilled water to
make your buffers, it comes with a preservative to add. They are
supposed to last up to 3 month, but mine start to grow mold at about 2
months. A 100 ml graduate is only about $5 for a decent glass
graduate. It's still pretty cheap no matter what. I get them from
Fisher Scientific but I'm from Pittsburgh, any decent chemical supply
house should carry them.

That's it then, I'm switching to the Hydrion capsules. I'll have
to rememeber not to store them near my vitamins...

Thanks for the outstanding info in that FAQ. I hadn't heard
about cleaning the probes with contact lens cleaning solution before.
That's been an issue for me because I test things that mess up
the tip (meat, cheese, etc).

--
Reg email: RegForte (at) (that free MS email service) (dot) com