which is wrong- ph probe or salifert test?

PENNYWISE · 01/31/2007, 12:23 PM

I'm trying to bring my ph up and I don't know which to believe- pinpoint ph probe (re-calibrated twice) or salifert ph test? Salifert looks like 8.0, but pinpoint says 8.28~8.3?

cristhiam · 01/31/2007, 12:30 PM

If the pinpoint is calibrated and match they solutions correctly I'll go with it. Thanks for remind me that I need to calibrate mine

PENNYWISE · 01/31/2007, 12:34 PM

that's what I thought, but why would the salifert be so off? The test water shows up light green (8.0 on the scale) and 8.3 is dark green. It's not even close?

cristhiam · 01/31/2007, 12:48 PM

not sure I have never use a salifert ph test so I can't coment on that

I guess is not accurate lol

CaliforniaDreamer · 01/31/2007, 12:50 PM

Quote:

Originally posted by cristhiam
If the pinpoint is calibrated and match they solutions correctly I'll go with it. Thanks for remind me that I need to calibrate mine

I agree, if you have calibrated the pinpoint with 7.0 and 10.0. Assuming that the probe is in reasonable shape, go with the pinpoint, colorimetric tests are notoriously hard to read.

piscivorous · 01/31/2007, 02:14 PM

I can see I will need to be purchasing myself a pH meter once I get my system up and running....always fun new toys to buy

Right now I am looking forward to the refractometer....after the pH meter I'll be looking at calcium reactors....I loooove the gadgets

AquaReeferMan · 01/31/2007, 03:29 PM

Quote:

Originally posted by piscivorous
I loooove the gadgets

I love the gadgets too. My wallet on the other hand doesnt.

Maveri9720 · 01/31/2007, 03:36 PM

I had a real hard time trying to decipher the Salifert PH test kit myself. Then I got my Reefkeeper II and calibrated the probe and the readings were off by .2 or so.

Definitely go with the Pinpoint w/a proper calibration and a good probe. Titration tests are hard to read, especially the color ones. Alot will depend on the lighting and angle you look at the test vial.

01/31/2007, 12:23 PM	#1
PENNYWISE Registered Member Join Date: Apr 2004 Location: Derry, Maine Posts: 164	which is wrong- ph probe or salifert test? I'm trying to bring my ph up and I don't know which to believe- pinpoint ph probe (re-calibrated twice) or salifert ph test? Salifert looks like 8.0, but pinpoint says 8.28~8.3?

01/31/2007, 12:30 PM	#2
cristhiam Registered Member Join Date: Feb 2004 Location: Groveland, FL Posts: 3,099	If the pinpoint is calibrated and match they solutions correctly I'll go with it. Thanks for remind me that I need to calibrate mine __________________ 2 yellows tail damsels, yellow watchman goby, tail spot blennie, purple pseudocromis, starry blennie, 2 clowns, 1 black clown, mandarine & Yellow tang Current Tank Info: 125 AGA, 3 40W 6500K, 3 110W URI Actinics, running on 2 IceCaps 660, CSS125

01/31/2007, 12:48 PM	#4
cristhiam Registered Member Join Date: Feb 2004 Location: Groveland, FL Posts: 3,099	not sure I have never use a salifert ph test so I can't coment on that I guess is not accurate lol __________________ 2 yellows tail damsels, yellow watchman goby, tail spot blennie, purple pseudocromis, starry blennie, 2 clowns, 1 black clown, mandarine & Yellow tang Current Tank Info: 125 AGA, 3 40W 6500K, 3 110W URI Actinics, running on 2 IceCaps 660, CSS125

01/31/2007, 12:34 PM	#3
PENNYWISE Registered Member Join Date: Apr 2004 Location: Derry, Maine Posts: 164	that's what I thought, but why would the salifert be so off? The test water shows up light green (8.0 on the scale) and 8.3 is dark green. It's not even close?

01/31/2007, 02:14 PM	#6
piscivorous Registered Member Join Date: Jan 2005 Location: Groton, N.Y. Posts: 801	I can see I will need to be purchasing myself a pH meter once I get my system up and running....always fun new toys to buy Right now I am looking forward to the refractometer....after the pH meter I'll be looking at calcium reactors....I loooove the gadgets

01/31/2007, 03:36 PM	#8
Maveri9720 Registered Member Join Date: Sep 2006 Location: Dallas, GA Posts: 63	I had a real hard time trying to decipher the Salifert PH test kit myself. Then I got my Reefkeeper II and calibrated the probe and the readings were off by .2 or so. Definitely go with the Pinpoint w/a proper calibration and a good probe. Titration tests are hard to read, especially the color ones. Alot will depend on the lighting and angle you look at the test vial.