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HM Digital TDS/EC Calibration Solution, 1000 ppm
HM Digital TDS/EC Calibration Solution, 1000 ppm
List Price: $6.50
Our Price: $5.65
Savings: $0.85

For optimal meter performance, periodically calibrate meters with HM Digital TDS/EC Calibration Solution, or if testing TDS or conductivity levels in wide or different ranges. Made of NaCL solution, this NaCL solution comes in a lightweight HDPE plastic bottle and is sealed with a coated foam liner.


For use with Sunleaves TDS Essential Pen and other HM digital meters.
Bluelab 7.0 Calibration Solution - 250mL
Bluelab 7.0 Calibration Solution - 250mL
List Price: $8.00
Our Price: $7.00
Savings: $1.00

7.0 Calibration Solution for pH meters
Bluelab 4.0 Calibration Solution - 250mL
Bluelab 4.0 Calibration Solution - 250mL
List Price: $8.00
Our Price: $7.00
Savings: $1.00

4.0 Calibration Solution for pH Meters
GH 4.01 Calibration Solution - 8oz
GH 4.01 Calibration Solution - 8oz
List Price: $7.50
Our Price: $7.00
Savings: $0.50

Calibration Solution 4.01 from General Hydroponics - 8oz bottle
GH 7.0 Calibration Solution - 8oz
GH 7.0 Calibration Solution - 8oz
List Price: $7.50
Our Price: $7.00
Savings: $0.50

Calibration Solution - 7.0 from General Hydroponics - 8oz bottle
Bluelab KCI Storage Solution - 100mL
Bluelab KCI Storage Solution - 100mL
List Price: $12.00
Our Price: $9.75
Savings: $2.25

The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and maximize the life of Bluelab pH pens and pH probes. For best results, use the KCl solution to store the pH pen/probe after use and hydrate monthly. Bluelab pH Probe KCl Storage Solution is manufactured to high laboratory standards.

TDS Calibration Solution 1382 (for Hanna Combo pen)
TDS Calibration Solution 1382 (for Hanna Combo pen)
List Price: $15.00
Our Price: $13.00
Savings: $2.00

TDS Calibration Solution for the Combo Waterproof Tester. 230 mL.
Hanna 1500ppm Calibration Solution - 230mL
Hanna 1500ppm Calibration Solution - 230mL
List Price: $15.00
Our Price: $13.00
Savings: $2.00

GroCheck conductivity solution made from high quality Potassium Chloride is standardized and calibrated. Conductivity value at 25°C: 1,500 ppm. Comes with factory analysis certificate.
Hanna Electrode Cleaning Solution - 230mL
Hanna Electrode Cleaning Solution - 230mL
List Price: $15.95
Our Price: $13.00
Savings: $2.95

Proper maintenance is the key to ensuring the accuracy of any pH tester. Hanna Electrode Cleaning Solution, used at least once per week and as often as once per day, keeps dirt and contaminants from causing incorrect readings. It’s as simple as a five-minute soak! 230-milliliter bottle.
GH 4.01 Calibration Solution - Qt
GH 4.01 Calibration Solution - Qt
List Price: $21.50
Our Price: $16.00
Savings: $5.50

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.

4.01 - Quart
   
 
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