PH Calibration fluid

[meschaefer]

Any one know of a local source?

 

[Pseudo]

Tony at Reef Exotics has them. Which ones do you need ?

 

[meschaefer]

7 & 10

whre is reef exoctics located

 

[Pseudo]

I dont have the address right now but he is in Long Island. Reefexotics.com is the website.

If you need I have some 4 and 7's. I dont have any 10's right now.

Kasei

 

[cali_reef]

Buy the bottles, it is cheaper.

 

[meschaefer]

I could be dumb (which is very likely) but I went ot their site and could not find an address for their store, other than that they are in Nassau.

I sent them an e-mail, hopefully they will respond.

Thanks for the offer for the solution, it is really appreciated, but I need both 7 & 10 to calibrate my probe.

thanks

 

[Pseudo]

From where dude...?

 

[meschaefer]

Buy the bottles, it is cheaper.

My understanding is that atmospheric Co2 will cause an open bottle of the 10 solution to degrade fairly quickly. I read somewhere that once you open the bottle, it will degrade to a ph of 9.6 within two days, and continue downward from there. As PH is a log, even a .4 difference is signficant when calibrating.

Or is my understanding wrong?

 

[cali_reef]

The solution should be buffered enough to maintain shelf life, I never tested the test solution, I just assumed. I do check my meter reading with a salifer test kit every now and then and always find the freshly calibrated probes are pretty on, but then again a .2 difference is hard to see in those color charts.

 

[cali_reef]

From where dude...?

Anywhere!!

Its made by Milwaukee and the P/N are MA9007 and MA9010, you can get the 220ml bottle for $9 online and it will last longer then the shelf life.

Order one of each for me so I can stop using these expired bottles I have.

 

[meschaefer]

Cali

Might I suggest a little experiment. As you indicated that you are in need of some new PH calibration fluid, but still have some of the old stuff left, why not calibrate with the new fluid (when you get it) then test the PH of the old fluid. This should give us an idea, about whether there is any real change in the PH over time. The only problem that I see, is that the old fluid has expired.

 

[cali_reef]

Will do that, I like experimenting.

 

[meschaefer]

It just seemed like such a simple thing to check out.