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Which Omega pH meter?


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#1 Evil_Morty

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Posted 09 January 2017 - 05:50 PM

First: are these still the best option?
Second: which model?
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#2 drez77

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Posted 09 January 2017 - 06:32 PM

Phh-7011. I still really like mine. Easy to use and calibration stays for a long time.

http://www.omega.com...t/PHH-7000.html
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#3 matt6150

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Posted 09 January 2017 - 06:37 PM

I've only had mine for a few months, but I really like it.
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#4 Evil_Morty

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Posted 10 January 2017 - 04:56 AM

no need to order extra storage solution or anything with it right?


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#5 drez77

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Posted 10 January 2017 - 05:37 AM

no need to order extra storage solution or anything with it right?

I would but that is up to you.  It comes with a small amount of storage solution ph7 and ph4 calibration solution.  I ordered extras of both, I have used the Omega brand, Milwaukee and Hanna with no issues.  I did have an issue with Atlas Scientific but I would be willing to try them again since they are so cheap.


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#6 matt6150

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Posted 10 January 2017 - 05:42 AM

no need to order extra storage solution or anything with it right?

I didn't but will need to at some point.
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#7 Evil_Morty

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Posted 10 January 2017 - 06:08 AM

how fast do you go through the storage and buffer solutions?  I see the buffer solutions only have a 1 year shelf life and you buy them by the pint.  do you actually go through a pint per year?


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#8 drez77

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Posted 10 January 2017 - 06:55 AM

how fast do you go through the storage and buffer solutions?  I see the buffer solutions only have a 1 year shelf life and you buy them by the pint.  do you actually go through a pint per year?

I think I have but I do calibrate each time just because I have the solution and time. 


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#9 Evil_Morty

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Posted 10 January 2017 - 07:05 AM

this recurring cost of $36 year makes me pause every time I think.  :crybaby:


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#10 drez77

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Posted 10 January 2017 - 07:11 AM

this recurring cost of $36 year makes me pause every time I think.  :crybaby:

Not saying you have to get it and do it every time.  I personally like to know that my meter is calibrated especially if I am putting a lot of money in the beer between hops and yeast. 


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#11 Evil_Morty

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Posted 10 January 2017 - 07:33 AM

Not saying you have to get it and do it every time.  I personally like to know that my meter is calibrated especially if I am putting a lot of money in the beer between hops and yeast. 

 

well even if I don't do every time I have to buy new stuff every year.  if I had it and I needed to use it over a year I'd probably recal it just like you do.


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#12 drez77

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Posted 10 January 2017 - 07:35 AM

Truthfully 36 bucks a year is a small price to pay.  That is less than the costs of a 12 pack at my local micro brewery :)


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#13 Evil_Morty

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Posted 10 January 2017 - 08:52 AM

Truthfully 36 bucks a year is a small price to pay.  That is less than the costs of a 12 pack at my local micro brewery :)

 

you are right.  maybe I can get someone local to buy one and we can split the cost :lol:

 

my cheapness makes me so sad :crybaby:


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#14 ER Pemberton

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Posted 10 January 2017 - 09:00 AM

My old Milwaukee needed to be calibrated so often that I would throw in a bottle of storage solution, 4.0 and 7.0 when I was buying something from Amazon. Not only does this meter not require it as often but the way that the cap screws onto the end of the probe (unlike the Milwaukee), the storage solution doesn't evaporate as quickly. I have bottles of storage, 4 and 7 to last me a lifetime now. I'm saying it right here and right now and you can quote me... this meter is the shizzle. :D

#15 neddles

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Posted 10 January 2017 - 09:04 AM

I use these. I think it was chils who turned me on to them. They have worked great, no problems whatsoever. Cheaper but requires you to rehydrate them in distilled water. Search for the 4.0 counterpart to the one linked. 

http://www.totalphar...sules-ph-7.html


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#16 drez77

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Posted 10 January 2017 - 09:06 AM

I use these. I think it was chils who turned me on to them. They have worked great, no problems whatsoever. Cheaper but requires you to rehydrate them in distilled water. Search for the 4.0 counterpart to the one linked. 

http://www.totalphar...sules-ph-7.html

I also seen Martin Burgard (sp) mention these before with good results.


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#17 Evil_Morty

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Posted 10 January 2017 - 09:10 AM

is storage solution good for a long time and it's just the calibration solutions that have a shorter shelf life?


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#18 Brauer

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Posted 10 January 2017 - 10:25 AM

Tightly sealed and uncontaminated 500 mL pH solutions are stable (±5%) for ~4 years. The trick is keeping them tightly sealed and uncontaminated. Uncontaminated, most of the lack of stability is due to evaporation around the cap. Expiration date is not stability, it is a combination of stability and an estimation of how poorly they expect you to handle it.
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#19 Evil_Morty

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Posted 10 January 2017 - 10:29 AM

Tightly sealed and uncontaminated 500 mL pH solutions are stable (±5%) for ~4 years. The trick is keeping them tightly sealed and uncontaminated. Uncontaminated, most of the lack of stability is due to evaporation around the cap. Expiration date is not stability, it is a combination of stability and an estimation of how poorly they expect you to handle it.

 

good to know.  what do you do?


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#20 Brauer

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Posted 10 January 2017 - 10:41 AM

good to know. what do you do?

I'm a Cellular Biochemist and I study pharmaceutical safety.
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