Question about pH meter

[cbrosII]

We recently bought a Piccolo plus hi 1295 from Hanna and I'm a little concerned with its quality. Measurements are random (jumping from 10 to 3 pH for example or giving negative pH readings). I bought the recommended storage solution and that is what the probe sits in when not in use.

I am writing to see if anyone has had similar problems with this model or other Hanna products.

Thanks

[Inthelab]

How do you calibrate it? How often?

Do you cool your samples before measuring pH?

[Starcat]

Hanna

I am using a 98130 for boiler chemistry readings.
ON the whole I don't care for the quality.
Menu functions are quirky.
The storage solution is an odd salty affair and the idea that these things have to be calibrated so often is a bit uncalled for. Industrial grade instruments don't call for such frequent calibration.
It does not compare to Hach meters I have used in Surface water treatment in the past.
Its better to spend for a high grade instrument that has a wand type probe rather than a pocket unit.

[timherdklotz]

ph test strips



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[Randy.Cockerell]

Just a thought on this, do you measure pH at mash temperature or do you cool down your sample before taking a reading?

[Matt Falco]

pH probe/meter

Get an Orion 8156BNUWP w/ Ross Ultra electrode and an Orion 320 or Orion 3 Star meter. This electrode is refillable, has an epoxy body (i.e. is very tough), and is well suited for proteinaceous solutions. You will need electrode filling solution, storage solution, buffers, and cleaning solution suited for that probe. It has almost no drift and should require very little recalibration.

[Starcat]

Hanna PH Meter

The quality is poor, and Engineering is weak.

The Storage solution destroys the unit.
Notice how salty it is.
My Boiler Chemical advisor keeps his in plain water and he is correct on this point. Our local water quality happens to be ok for this non-standard practice.
My problems stopped when I stopped the storage solution.
He advised I clean this one with vinegar and do RE CAL, which I did and it brought it back.

Having run surface water treatment plants in the past, I advise going with HACH or some better instrument in the future.
I definitely will. I also don't really need the idiotic metric units of unmeasure.

[william.heinric]

We use a Milwaukee pH 102. They seem to last about 2 years, can handle a wide range of temperatures, and take a beating.

$110 on Amazon. Spend it.

We run tests on both hot and cold mash. Wort temps get above 70C, which is where the things gets unhappy.