pH & TDS Testing

These batteries work with most of the pH and TDS pens on the market, as well as the Intermatic Digital Timers.

These sachets are for use with the Hanna HI9813-6 Gro'Chek Portable pH/TDS/EC/Temp Meter. The Cal-Check feature of this meter utilizes the Cal-Check Solution in order to determine if ...

pH and TDS electrodes should be cleaned frequently (every 1-4 weeks, depending on use) to prevent premature failure and maintain accuracy.

To use the Hanna Electrode Cleaning ...

TDS and EC meters should be calibrated frequently (every 1-4 weeks, depending on use). Do not reuse calibration solution, as once it has been used, it is no longer sterile and may result ...

TDS and EC meters should be calibrated frequently (every 1-4 weeks, depending on use). Do not reuse calibration solution, as once it has been used, it is no longer sterile and may result ...

TDS and EC meters should be calibrated frequently (every 1-4 weeks, depending on use). Do not reuse calibration solution, as once it has been used, it is no longer sterile and may result ...

pH meters should be calibrated frequently (every 1-4 weeks, depending on use). Two-point calibration (using both 4.0 & 7.0 buffers) ensures the most accurate calibration possible. Do not

pH meters should be calibrated frequently (every 1-4 weeks, depending on use). Two-point calibration (using both 4.0 & 7.0 buffers) ensures the most accurate calibration possible. Do not

pH meters should be calibrated frequently (every 1-4 weeks, depending on use). Two-point calibration (using both 4.0 & 7.0 buffers) ensures the most accurate calibration possible. Do not

pH meters should be calibrated frequently (every 1-4 weeks, depending on use). Two-point calibration (using both 4.0 & 7.0 buffers) ensures the most accurate calibration possible. Do not

pH meters should be calibrated frequently (every 1-4 weeks, depending on use). Two-point calibration (using both 4.0 & 7.0 buffers) ensures the most accurate calibration possible. Do not

pH meters should be calibrated frequently (every 1-4 weeks, depending on use). Two-point calibration (using both 4.0 & 7.0 buffers) ensures the most accurate calibration possible. Do not

Using Electrode Storage Solution will greatly extend the life of your pH probe. Simply pour enough solution into the cap of the electrode to cover the tip of the probe when your meter is not being ...

TDS and EC meters should be calibrated frequently (every 1-4 weeks, depending on use). Do not reuse calibration solution, as once it has been used, it is no longer sterile and may result ...

TDS and EC meters should be calibrated frequently (every 1-4 weeks, depending on use). Do not reuse calibration solution, as once it has been used, it is no longer sterile and may result ...

TDS and EC meters should be calibrated frequently (every 1-4 weeks, depending on use). Do not reuse calibration solution, as once it has been used, it is no longer sterile and may result ...

TDS and EC meters should be calibrated frequently (every 1-4 weeks, depending on use). Do not reuse calibration solution, as once it has been used, it is no longer sterile and may result ...

pH GRO'CHEK®

• Ideal for hydroponics, greenhouses and nurseries
• Robust enough to mix the fertilizer solution itself!
• Waterproof housing floats

TDS GRO'CHEK^®

• Waterproof & Rugged
• Long rugged probe for mixing fertilizer
• Automatic Calibration ...

EC GRO'CHECK®

• Waterproof and rugged
• Long rugged probe for mixing fertilizer
• Automatic Calibration is as simple as 1-2-3!
  ...

• Waterproof
• Adjustable TDS ratio
• Adjustable β
• Extra-large dual-level backlit LCD
• 12 VDC power supply

The HI 981504

• Automatic temperature compensation
• Penetration probe
• Lightweight and portable

The HI 98331 is a specialized pocket tester designed to directly ...

• Dual level LCD
• Probe can be used as a stirrer
• HOLD button to freeze display
• Auto shut-off

To perform simple and fast EC, TDS, and ...

Now growers can have accurate readings in a pocket sized tester@ They Hydgrocheck's large LCD can be seen from any angle. Housed in rugged ABS plastic, the Hydrocheck uses Hanna instruments Thin Film

The HI 991301 offers the combination of pH, electro-conductivity, total dissolved solids and temperature readings. To increase precision, you can select the meter which will work best with your ...

• Waterproof
• Stability indicator
• Extra-large dual-level display
• 12 VDC power supply

This waterproof pH indicator has been designed to ...

• Waterproof
• Adjustable TDS ratio
• Adjustable β
• Extra-large dual-level backlit LCD
• 12 VDC power supply

This waterproof

HM Digital introduces its new AquaPro series, a line of handheld TDS/EC meters with a sleek design that's perfect for today's modern kitchen. The AquaPro digital water testers are the next ...

Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing,

Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & ...

Ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver.

• Includes an internal digital ...

A Quality Sugar Refractometer (Brix Meter) at an Incredible Price!

Developed for working with sugar related liquids (fruit juices, soft drinks, wine), a brix meter helps ...

The Gro-Chek Combo meters measure both pH and TDS at the same time. They are supplied with professional probes specially designed for the grower. To protect your investment, the user ...

The new HI 991404 meters from Hanna are designed for continuous, high accuracy pH, EC/TDS and temperature measurements. These microprocessor indicators continuously monitor the three ...

This is the replacement electrode for the Hanna Gro'Chek Continuous pH/TDS/EC/Temp - HI 991404.

Hanna Gro'Chek Portable pH/TDS/EC Meter (HI 9813-0) - pH, EC and TDS in the Palm of Your Hand!

• Three Meters in One The portable HI 9813-0 is an

This is the replacement electrode for the Hanna Gro'Chek Portable pH/TDS/EC Meter - HI 9813-0.

This rugged rubber boot will help protect your meter from accidental bumps and falls.

This meter is identical to the HI 9813-0, with the addition temperature measurement and Hanna's new Cal-Check calibration feature. This feature enables the grower to verify that the ...

This is the replacement electrode for the Hanna Gro'Chek Portable pH/TDS/EC Meter - HI 9813-6.

• Rugged, Floating Waterproof Casing.
• Temperature in °C and °F.
• Measurement Stability Indicator.
• Replaceable pH Electrode Featuring an Extendable ...

The Nutra-Dip Tri-Meter (CMS) Continuous Monitoring System Meter gives you the ability to monitor pH level, Total Dissolved Solids (TDS) and Temperature all at the same time. This ...

This is just the Doser Unit and Probe only; does not include filters, solenoids, sample pot, plumbing, etc.

Includes Monitor/Controller, probe, A/C adapter, filters, solenoids, EC calibration solutions, sample pot & complete pre-cut and pre-drilled plumbing.

IntelliDose™ – The Intelligent Hydroponic Doser

Now doses up to 8 parts (i.e. 7 parts + pH down or 6-parts + pH down + pH up or 3-part nutrient + pH down + 4 ...

For use with dosing systems such as the NutriDose and the IntelliDose.

The Nutrient Stock Tank Kit - 1 Part includes a 5 gallon bucket with lid, 8' of 1/2" tubing, tank fitting, ball ...

For use with dosing systems such as the NutriDose and the IntelliDose.

The Nutrient Tank Fitting Kit includes a tank fitting, ball valve and adapter. Add your own bucket and tubing to make

For use with dosing systems such as the NutriDose and the IntelliDose.

The pH Stock Tank Kit - 1 Part includes a 64 ounce bucket with lid, 8' of 1/2" tubing, tank fitting, ball valve ...

For use with dosing systems such as the NutriDose and the IntelliDose.

The Acid Tank Fitting Kit includes a tank fitting, ball valve and adapter. Add your own acid-resistant bucket and ...

For use with dosing systems such as the NutriDose and the IntelliDose.

The Peristaltic Triple Pump Set includes 3 commercial grade dosing pumps; 1 pump for your "A" nutrient, 1 ...