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View Full Version : Lf calibration fluid for ph prob

Davidbugera
10-21-2012, 07:09 PM
As it says
mrhasan
10-21-2012, 08:08 PM
As it says

I have a bottle of 4.0pH that I no longer use (my pH pen got busted). If you want, you can have it.
Davidbugera
10-22-2012, 02:08 AM
The Manuel says to use a ph of 7.0 and 10.0 to calibrate I'm new to the apex so not sure if it would work but thank u for the reply
mrhasan
10-22-2012, 02:32 AM
The Manuel says to use a ph of 7.0 and 10.0 to calibrate I'm new to the apex so not sure if it would work but thank u for the reply

Since the manual says that, you should follow it I guess. You can grab small packs of powders from LFS that you have to mix with specific amount of RO/DI water.
cale262
10-22-2012, 02:38 AM
Most stores carry the 7 & 10 calibration solutions for only a couple bucks. If you have a ph test kit you could make your own solutions but its a pita.
Madreefer
10-22-2012, 02:40 AM
Or better yet go to a hydroponic store and grab a bottle of each fluid for under $5/bottle. Much cheaper than the one use packages they sell at LFS
Davidbugera
10-22-2012, 03:44 AM
Now that I no most lfs carry the powders ill pick some up thanks
cale262
10-22-2012, 03:51 AM
I've never seen a powder, I've only seen it in little bottles or foil packets.
mrhasan
10-22-2012, 04:03 AM
I've never seen a powder, I've only seen it in little bottles or foil packets.

The small foil packets has the powder that you have to mix with prescribed about of water :mrgreen:
cale262
10-22-2012, 04:11 AM
The small foil packets has the powder that you have to mix with prescribed about of water :mrgreen:

I've only ever used the DA bottles (7/10) or the Hanna packets with liquid solutions (4/7/10)..I'm aware of the powered stuff you can get from hydroponic shops but have never seen it in a SW store. Meh
mrhasan
10-22-2012, 04:13 AM
I've only ever used the DA bottles (7/10) or the Hanna packets with liquid solutions (4/7/10)..I'm aware of the powered stuff you can get from hydroponic shops but have never seen it in a SW store. Meh

I think the bottles are more common in the stores and prefer those actually. I have seen the packets in one store although got mine free from ebay when I bought the pH pen (piece of crap) but they have to be mixed in specified amount of water which is a pita to measure.