PH Meter - Handheld from swf.com

[larryndana]

so theres no need in getting the 4?

 

[rmahnick]

Originally Posted by larryndana
how about just 7 or 10 since thats inbetween? or is it necessary to have all three, or a specific two?
Suggest to get two, 7.0 and 10.0.
To help to calibrating the meter than only one solution. 7.0 and 10.0 are good because of saltwater is range 7.6 to 8.5.
I find two solution to help me to know that meter is lock and meter is ready to test water

 

[rmahnick]

Originally Posted by larryndana
so theres no need in getting the 4?
No need 4, 7.0 and 10.0 are good.

 

[larryndana]

thanks, i appreciate it.