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Monitoring and Test Equipment
Home >> Monitoring and Test Equipment >> Calibration Solutions
General Hydroponics Standard Reference Solution pH 4.01 small
pH Calibration Solution 4.01 - 8 oz.
This balanced pH Calibration Solution 4.01 is used to calibrate ph meters.
$7.50
General Hydroponics Standard Reference Solution pH 4.01
pH Calibration Solution 4.01 32oz
This balanced pH Calibration Solution 4.01 is used to calibrate ph meters. 
$21.50
General Hydroponics Standard Reference Solution pH 7.0
pH Calibration Solution 7.0 - 8 oz.
This balanced pH Calibration Solution 7.0 is used to calibrate ph meters.
$7.50
General Hydroponics Standard Reference Solution pH 7.0
pH Calibration Solution 7.0 32oz
This balanced pH Calibration Solution 7.0 is used to calibrate ph meters. 
$21.50
pH Calibration Solution 8oz Set
A small amount of balanced pH Calibration Solutions is all a grower needs to adjust ph meters.
$14.95
Sunleaves TDS Essentail Calibration Solution
Solution measures a standard conductivity of 1,000 ppm at a 0.5 conversion scale.
$7.00
Hanna Calibration Solution
TDS Calibration Solution 1382
This TDS Calibration Solution is the perfect match for Hanna meters.  
$14.95
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