PH tester question

I'm thinking of getting this pH tester. It says waterproof and this might be a stupid question but can you use this to test the pH of your nutrient solution or can it only be used for soil? http://www.greners.com/i/nutrients-additives/testers-ph-ppm/ph-meters/bluelab-soil-ph-pen.html

That one is for soil, not liquids. I use the Bluepen. Happy with it thus far.

So I'm gonna have to buy a separate one just for soil and then one for my nutrient solution?

cdd10,
No...you can test soil with a hydro tester. You take a measured amount of dirt...stick it in a measured amount of water and shake it up...then test the water. Sorry don't have any more details...but that's how it's done. A stick-it-in the ground tester isn't too accurate anyway.

It's always best to test and correct dirt before planting in it. Hope that helps.
JD

cdd10,
Hey dude...I ran across a soil ph test method. It's formal name is the volume extraction method. Use a 1/2 ratio like perhaps half cup dirt to one cup distilled water. Shake it up...let stand for 15 minutes and then test the ph of the water (using your hydro tester).

JD