Refractometers [RE-wrenches]

[Tom Lane]

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www.solarnetix.com  also has Ph testors ;  however remember buffer status is 
more important which Ph is no indicator of  --- buffers go,  'off the cliff 
' when they go ---gator tom
----- Original Message ----- 
From: "Nick Houser" <offgrid at prcn.org>
To: <RE-wrenches at topica.com>
Sent: Monday, February 25, 2008 12:34 PM
Subject: Refractometers [RE-wrenches]


>
> I'd like to second Jim in praise of the "Misco" brand of
> refractometers for testing battery (Non-sealed) state of
> charge. Mine is a model 7084 F, which was a much-appreciated gift
> from a happy customer; Iv'e been using it for years to calibrate the
> plastic hydrometers I give all my battery customer. This particular
> customer was retired from Finning, where they don't use
> anything else. Also good for testing glycol concentration, it's best
> feature is that it only needs a few drops of electrolyte to
> give an accurate, temp-compensater reading. Pays for itself
> in workpants VERY quickly. Like my Fluke collection, it takes
> the guesswork out of measurements. I've also used the somewhat
> less expensive automotive versions like the "Ultra-Pro 62240)
> (Napa), but though they work, they just don't resolve nearly
> as well. In this as in so many other things, there's really no
> substitute for the right tool. Although, if you really can't afford the
> Misco, the Napa one has the redeemong factor that it CAN
> be calibrated, which is not possible (necessary) with the Misco.
>
>
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