ph calibration solution

Paaty · 10/20/2007, 07:16 AM

I need to recalibrate my milwaukee ph caontroler although I can't remember which solution to buy. is it ph 4, ph 7, or ph 10. thanks in advance

m2434 · 10/20/2007, 07:53 AM

The stuff they sell on the marine sites appears to be absurdly expensive. Try a scientific supply co.
Here is one example, the pH 7 solution is <1/2 price compared to marinedepot. But search around.
http://www.omega.com/pptst/PHA4_7_10.html

Most meters use pH 7, this is a standard and you can use any fluid. Unfortunately, I've noticed other meters use pH 7.01, I believe the sole purpose of this is to try to force you to buy their overpriced solution. But again search around.

steve the plumb · 10/20/2007, 08:14 AM

I had the coralife ph calibration fluids(in a bottle) and they don't work properly.Once you expose the fluids to air you can't use them again.I don't know about these since they might be a better quality.I see they have single use packages $18 for 20 tests that is a good price.From what there price is you can save around $5 unless you buy the small bottle

arts007 · 10/20/2007, 08:32 AM

For your meter use pH 7 and 10, the package may say 7.01 which is the pH at a specific temp

LobsterOfJustice · 10/20/2007, 10:03 AM

If you are using the controller for a calcium reactor you want to use 4 and 7, otherwise use 7 and 10.

10/20/2007, 07:16 AM	#1
Paaty Registered Member Join Date: Nov 2003 Location: Montreal, Canada Posts: 565	ph calibration solution I need to recalibrate my milwaukee ph caontroler although I can't remember which solution to buy. is it ph 4, ph 7, or ph 10. thanks in advance Last edited by Paaty; 10/20/2007 at 07:49 AM.

10/20/2007, 07:53 AM	#2
m2434 Registered Member Join Date: Jan 2004 Posts: 2,171	The stuff they sell on the marine sites appears to be absurdly expensive. Try a scientific supply co. Here is one example, the pH 7 solution is <1/2 price compared to marinedepot. But search around. http://www.omega.com/pptst/PHA4_7_10.html Most meters use pH 7, this is a standard and you can use any fluid. Unfortunately, I've noticed other meters use pH 7.01, I believe the sole purpose of this is to try to force you to buy their overpriced solution. But again search around. __________________ Our imagination is stretched to the utmost, not, as in fiction, to imagine things which are not really there, but just to comprehend those things which are there. ~Richard Feynman

10/20/2007, 08:14 AM	#3
steve the plumb Moved On Join Date: Apr 2005 Location: Montreal, Canada Posts: 3,664	I had the coralife ph calibration fluids(in a bottle) and they don't work properly.Once you expose the fluids to air you can't use them again.I don't know about these since they might be a better quality.I see they have single use packages $18 for 20 tests that is a good price.From what there price is you can save around $5 unless you buy the small bottle Last edited by steve the plumb; 10/20/2007 at 08:21 AM.

10/20/2007, 08:32 AM	#4
arts007 Registered Member Join Date: Jan 2007 Location: Illinois Posts: 600	For your meter use pH 7 and 10, the package may say 7.01 which is the pH at a specific temp __________________ Genius is 1 percent inspiration and 99% perspiration, which is why engineers sometimes smell really bad. Current Tank Info: 120g SPS reef tank. 2x 400 watt Reeflux 12k on lumenbrights

10/20/2007, 10:03 AM	#5
LobsterOfJustice Recovering Detritophobe Join Date: Jan 2004 Location: Cary, NC Posts: 7,443	If you are using the controller for a calcium reactor you want to use 4 and 7, otherwise use 7 and 10. __________________ If it's worth doing, it's worth doing right. I remember when zoanthids were called things like "green" and "orange" and not "reverse gorilla nipple." Current Tank Info: 180g reef with all the bells and whistles