GENERAL HYDROPONICS STANDARD pH REFERENCE SOLUTIONS
“General Hydroponics Standard Reference solution
For calibration of pH Meters”
pH 4.01 Solution 8 oz
pH 7.0 Solution 8 oz
$6.99
To buy any of these items contact us at customerservice@HealthCrafts.com
Copyright 1996 - 2005 © HealthCrafts All rights reserved.