How much would a digital pH meter set me back? (pH
 

pHaestus you listening? ;)

I don't need awesome accuracy or anything, a basic unit would do fine. However I have no idea where to look.

Also, do they make units that can plug into a multimeter like they do with some thermocouples? I think I remember seeing one a while ago.

Thanks.

http://www.professionalequipment.com...qx/default.htm

Maybe try e-bay.

Re: How much would a digital pH meter set me back? (pH
 

I don't know about ph meter/probes that can be connected to a M/M, but try Googling for swimming pool supplies or call some local pool suply dealers in your area. I'm sure Tucson has one or two. How hot was it today? We are setting records in Houston.

Re: Re: How much would a digital pH meter set me back? (pH
 

Cooler lately, though last saturday I hopped into may car and noticed the temp was reading 121F inside (hotter then my Athlon!) :eek:

I'll check pool stuff but thats generally meant for pH around 6-8.

Check www.labx.com

The problem is you don't just need a pH meter. For normal lab use, you'll need:

pH meter, compatible pH electrode, pH buffers for calibration, and electrode fill solution.

Finding any one of these on labx or ebay is trivial; finding everything is a chore. I am looking through the Fisher Scientific catalog now, and I see one promising new pH meter:

The Corning Chekmite pH tester. This might be a good choice (it's a little handheld unit). $60CAD is catalog price. It states: pH 0-14, resoltion 0.01, accuracy +/- 0.2 units. It can be calibrated with normal pH 4, 7, and 10 buffers. Corning part #475660. Replacement electrodes are $31CAD, but provided that you are following storage directions it shouldnt be an issue. Call and ask; they can probably throw in any fill/storage solution for the electrode and the buffer samples at no charge.

https://www1.fishersci.com/Coupon?ci...5728&details=Y

I have used Corning semimicro electrodes for years (the fast response ones) and like their products quite well.

/edit: link to product

I found some parts (pH probe, calibrating solutions) at www.omega.com . You could probably slap something together, but you'll have to keep in mind the accuracy of it all: as pHaestus pointed out, a good meter is key here.

Sorry me but...
So that they need to measure the PH?

Ketchak.
www.devilmaster.cjb.net

Check out Brians article on the coolants: when the pH becomes way off, it's an indication that it's time to flush and refill the system.

At least I assume that that was the purpose...