Santa Rosa: (707) 528-3500

Portland: (503) 788-GROW

 

Meters

It is possible to have too much of a good thing. That's why we stock meters. Want to know which mete would work best for you? Ask us.

Products

Hanna GroCheck Portable pH Monitor

HI 981408 has been specifically designed to address the needs of operators in hydroponics, greenhouses and nurseries.

The meter has all the characteristics necessary to check the pH of the fertilizer mix during preparation.

HI 981408 is sturdy and waterproof. It also floats so that it can be quickly retrieved if accidentally dropped in the tank.

To resolve the problem of frequent battery replacement, our R&D team has produced a meter that will run for 2000 hours continuously on common AA-type batteries (included). This translates into more than 2 years of continuous use up to 2 hours a day, seven days a week! Calibration has been simplified to one-point through a dial on the front of the meter. The outer casing also incorporates a molded eye so you can hang the meter when not in use.

Item Code
  • SUPPHA9814408
Item Description:
  • Hanna GroCheck Portable pH Monitor - HI981408

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Hanna GroCheck Continuous pH Monitor

HI 981401N has been designed to meet the Grower's need for equipment suited to the aggressive environments found in agricultural and hydroponics applications. The housing is water-resistant and features a molded eye which allows installation right above the sample to be monitored.

Measurements are highly accurate and can be verified with one or two point calibrations. With a 12 Vdc power supply included with the meter, low battery failurets are never an issue. The electrode is interchangeable and the connector is well-protected behind a waterproof sheathing. The meter is supplied with a stainless steel probe, preventing potential grounding problems and ensuring extended electrode life.

The gel-filled pH electrode has been specially designed to address the needs of growers. Its design guarantees greater clogging resistance in fertilizer solutions with high concentrations of phosphate, nitrate, etc.

Item Code
  • SUPPHA981401N
Item Description:
  • Hanna GroCheck Continuous pH Monitor - HI981401N

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Hanna GroCheck Portable TDS / EC Monitor

HI 981409 and HI 981410 TDS and EC meters have been specifically designed to address the needs of operators in hydroponics, greenhouses and nurseries. The meter employs the latest in custom-built application-specific microchips together with a purpose-built rugged housing to measure TDS and EC in fertilizer mixes. Calibration is easy and completely automatic. Simply press and hold the on/off button for a few seconds and the microchip inside the meter requests the appropriate calibration solution. Place the probe in the solution and wait until it is calibrated. No extra buttons to push or dials to turn!

HI 1220 probe measures 25 cm (10") and can even be used to mix the fertilizer solution! The custom-built microprocessor switches the meter off after five minutes of inactivity to save battery life. The outer casing also incorporates a molded eye so that the meter can be hung right where it is needed.

Item Code
  • SUPPHA981409
  • SUPPHA981410
Item Description:
  • Hanna GroCheck Portable TDS Monitor - HI981409
  • Hanna GroCheck Portable EC Monitor - HI981410

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Hanna GroCheck Continuous TDS / EC Monitor

These state-of-the-art meters have been engineered with a host of features suited to the aggressive environments commonly found in agricultural applications; housings and cable connections have been sealed against vapor and humidity.

With a 12 Vdc power supply included with the meter, low battery failures are never an issue. Locate the meter right above the sample to be monitored or take it with you for spot checking. Select HI 983301N for TDS measurements with the common 0.7 TDS conversion factor (4-4-2) or HI 983301N/5 which uses a 0.5 conversion factor.

Both the TDS and EC meters come with a probe specifically made for horticulture and hydroponics applications. The probe compensates for temperature variations automatically, is easy to clean and is very stable, needing little maintenance.

Item Code
  • SUPPHA983301N
  • SUPPHA983302N
Item Description:
  • Hanna GroCheck Continuous TDS Monitor - HI983301N
  • Hanna GroCheck Continuous EC Monitor - HI983302N

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Hanna GroCheck Portable pH/TDS/EC/Temp Monitor

pH electrodes are commonly designed to produce and output signal equal to 0 mV when immersed in a solution with pH 7. But a constant output value at pH 7 occurs as a result of certain adverse events, such as:

  • A broken bulb in the pH electrode
  • A short circuit in the cable of connector
  • Magnetic force leakage in the cable or connector (for example, in case of excessive humidity)

In these situations, the instrument displays a false reading at pH 7 and the user may not be aware that corrective measures are necessary; particularly if the user is anticipating a pH neutral reading. To avoid this problem, HANNA instruments® developed F.S.T. technology for HI 9813-6.

With this special security system, a system failure will force a fixed value close to pH 4, rather than pH 7, and render the problem clearer to the user.

For added confidence in your measurements, the meter is equipped with two LEDs and a "CHECK" button. While pressing this button, upon immersing the electrode in the Cal-Check solution HI 50021P, one of the LEDs will light up to indicate the status of the meter. The green LED ("OK") indicates the probe is working correctly, while the red LED ("C&C" Clean & Cal) indicates the electrode needs attention.

Item Code
  • SUPPHA9813-6
Item Description:
  • Hanna GroCheck Portable pH/TDS/EC/Temp Monitor - HI9813-6

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Hanna GroCheck Continuous pH/TDS/EC/Temp Monitor

The Combo HI 991404 meter from HANNA instruments is designed for continuous, high accuracy pH, EC/TDS and temperature measurements. These microprocessor indicators continuously monitor the three most important nutrient parameters in hydroponics, greenhouses and horticultural applications within a single instrument. The meter features a large, dual-level, backlit LCD to give you instantaneous readings of pH, EC or TDS and temperature, even from a distance.

At startup, the indicator performs a self-check to assure proper working condition. The HI 991404 stability indicator and hold features prompt the user when to take the reading and freezes the display for easy and accurate recording.

Calibration and temperature compensation is automatic, while the EC/TDS conversion factor and temperature coefficient (ß) are user adjustable for application-specific measurements.

This instrument is supplied with an advanced, non-clogging double junction pH electrode and a rugged conductivity probe that will withstand even the most aggressive environments. The instruments are powered by a 12 Vdc transformer and are easy to install and use, making them ideal for all continuously monitoring applications.

Item Code
  • SUPPHA991404
Item Description:
  • Hanna GroCheck Continuous pH/TDS/EC/Temp Monitor - HI991404

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Hanna pH/TDS/Temp Continuous Monitor

The HI 981504 has been designed for continuous and simultaneous monitoring of pH, TDS, and temperature.

Simply install the HI 981504 above the sample to be tested, plug the instrument to the mains and immerse the probes. pH, TDS, and temperature measurements will be simultaneously displayed on three backlit LCDs.

Users can easily select the temperature unit through a switch on the back panel.

The HI 1286 gel-filled pH electrode is provided with a waterproof sheath to protect the BNC connector. The unique design of the electrode provides longer life in aggressive solutions. The HI 7634 TDS probe is easy to clean and requires little maintenance. Measurements are accurate and the meter can be calibrated at one or two points for pH and at a single point for TDS.

Supplied with HI 1286 pH probe, HI 7634 TDS probe, temperature probe, TDS sachet, (2) cleaning solution sachets, screwdriver, 12 VDC adapter, and instructions.

Item Code
  • SUPPHA981504/7
Item Description:
  • Hanna pH/TDS/Temp Continuous Monitor - HI981504/7

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Hanna GroCheck Continuous pH/Temp Monitor

This indicator from HANNA instruments has a large, dual-level backlit LCD to give you instantaneous readings of both pH and temperature, even from a distance. The HI 991401 microprocessor provides for automatic calibration, automatic buffer selection and automatic temperature compensation.

HI 991401's waterproof housing has been designed to meet the grower's need, and is well suited to withstand the aggressive environments found in agricultural and hydroponics applications. Measurements are highly accurate and can be verified with one or two point calibrations. With a 12 Vdc power supply included with the meter, low battery failurets are never an issue.

The interchangeable pH electrode and has been specially designed to address the needs of growers. Its design guarantees greater clogging resistance in fertilizer solutions with high concentrations of phosphate, nitrate, etc. This is a major improvement ensuring longer life for your electrode!

Item Code
  • SUPPHA991401
Item Description:
  • Hanna GroCheck Continuous pH/Temp Monitor - HI991401

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Hanna GroCheck Continuous EC/TDS/Temp Monitor

This indicator from HANNA instruments has a large, dual-level, backlit LCD and displays instantaneous readings of both EC/TDS and temperature, even from a distance.

Waterproof and chemically resistant, the HI 993301 has been designed to meet the Grower's need for equipment suited to the aggressive environments found in agricultural and hydroponics applications. At startup, the HI 993301 performs a self-check to assure proper working condition. This powerful instrument also features a stability indicator and hold feature that prompts the user when to freeze the display and take the reading.

Calibration and temperature compensation is automatic, while the EC/TDS conversion factor and temperature coefficient factor (ß) are user adjustable for application specific measurements.

Item Code
  • SUPPHA993301
Item Description:
  • Hanna GroCheck Continuous EC/TDS/Temp Monitor - HI993301

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Hanna Aqua Dip EC/TDS/Temp Meter

HI 983311 Aqua Dip provides simple and fast measurements for EC/TDS/Temperature in places with high relative humidity. HANNA instruments® offers convenience & accuracy in this tester. With only two operation buttons, Aqua Dip allows immediate and precise response in a concise design. This is a rugged unit that can be used again and again. The probe is even durable enough to be used as a stirrer. The HOLD button will freeze the display reading for your documentation requirements. Aqua Dip is factory calibrated and offers total protection against humidity, which makes Aqua Dip ideal for field use.

Item Code
  • SUPPHA983311
Item Description:
  • Hanna Aqua Dip EC/TDS/Temp Meter - HI983311

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Hanna GroCheck Continuous pH/TDS/EC Monitor

HI 981404N and HI 981405N are both ideal for agricultural, horticultural and hydroponics applications where pH and TDS or pH and EC levels need to be continuously monitored for optimal plant growth. HI 981404N and HI 981405N continuously monitor and display the pH and TDS or pH and EC values of a solution on an easy to read set of dual LCD's.

The HI 1286 gel filled pH electrode is designed with the BNC connector protected behind a waterproof sheath and when exhausted is replaceable. The unique design of the electrode guarantees greater resistance to clogging in fertilizer solutions with high concentrations of phosphate, nitrate, etc. TDS measurements are performed using the 4-4-2 conversion factor of 0.7 so you do not need to convert the readings. Both models are equipped with a grounding bar to ensure more accurate pH measurements and longer electrode life.

HI 981404N and HI 981405N are compact and easy to install and use. This makes them ideal for all continuous monitoring applications.

Item Code
  • SUPPHA981404N
Item Description:
  • Hanna GroCheck Continuous pH/TDS/EC Monitor - HI981404N

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Hanna GroCheck Portable pH/TDS/EC Monitor

HI 9813-0 allows you to measure pH, EC (conductivity) and TDS with just one instrument! This meter has a full-spectrum pH measurement range.

The EC range goes to 4.00 mS/cm. In the TDS range, both instruments use a conversion factor from 0.56 to 0.72 for fertilizer readings, to ensure your measurements fully conform to industry standards.

The specially engineered HI 1285-0 probe is interchangeable and the pH electrode utilizes a fiber junction and gel electrolyte which are particularly suitable when used in fertilizer solutions.

Item Code
  • SUPPHA9813-0
Item Description:
  • Hanna GroCheck Portable pH/TDS/EC Monitor - HI9813-0

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Hanna HygroCheck Relative Humidity Monitor

The HANNA instruments HYGROCHECK uses the advanved TFPC® sensing method to measure humidity and an integrated electronic circuit to perform all relative conversions. This method of Relative Humidity measurement assures a quick and accurate reading. With a complete measurement range of 10% to 90% RH and an accuracy of 3% across the entire range, HYGROCHECK is the most complete and versatile pocket-sized Hygrometer available!

Most hygrometers on the market today are too large or heavy to be carried around together with other instruments for on-the-spot testing. The pocket-sized HYGROCHECK is only 180 x 30 x 15 mm (7.1 x 1.2 x 0.6") and weighs just 62 grams (2.2 oz.). This compact, rugged unit will slip right into your pocket and can be carried anywhere!

The housing is constructed of durable ABS material and the LCD is protected beneath a transparent plastic cover. The LCD displays the RH reading digits that can be read from any angle. Also, a vented cap protects the sensor while allowing maximum airflow for rapid response.

Unlike an ordinary hygrometer, HYGROCHECK performs all relative conversions electronically.

Item Code
  • SUPPHA98601
Item Description:
  • Hanna HygroCheck Relative Humidity Monitor - HI98601

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Hanna Waterproof pHep Tester

When HANNA instruments introduced its first version of the pHep (pH electronic paper) in 1986, it immediately revolutionized the standard in pH measurement. pHep's ease-of-use in combination with its affordability made it possible for non-technical and technical personnel alike to measure pH on the spot, accurately and inexpensively throughout a variety of industries. Since its introduction, over 1 million pHeps have gone to satisfied customers around the world.

We at HANNA instruments have always valued the comments and suggestions coming from our customers. For this series, we have included all of the features you have asked for and more! The pHep 4 and pHep 5 include features such as a dual-level LCD, battery level indicator, replaceable pH electrode cartridge, instability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing.

Item Code
  • SUPPHA98127
  • SUPPHA98128
Item Description:
  • Hanna Waterproof pH/Temp Tester (pHep 4) - HI98127
  • Hanna Waterproof pH/Temp Tester (pHep 5) - HI98128

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Hanna Waterproof Combo pH/EC/TDS/Temperature Tester

The HI 98129 Combo waterproof tester offers high accuracy pH, EC/TDS, and temperature measurements in a single tester! No more switching between meters for your routine measurements. The waterproof Combo (it even floats) has a large easy-to-read, dual-level LCD and automatic shut-off. pH and EC/TDS readings are automatically compensated for the effects of temperature (ATC). This technologically advanced tester has a replaceable pH electrode cartridge with an extendable cloth junction as well as an EC/TDS graphite electrode that resists contamination by salts and other substances. This gives these meters a greatly extended life. Your tester no longer needs to be thrown away when the pH sensor is exhausted.

The EC/TDS conversion factor is user selectable as is the temperature compensation coefficient (ß). Fast, efficient, accurate and portable, the Combo pH, EC/TDS and temperature tester brings you all the features you've asked for and more!

Item Code
  • SUPPHA98129
Item Description:
  • Hanna Waterproof Combo pH/EC/TDS/Temperature Tester - HI98129

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Hanna pH Checker 1

At the cost of just a few rolls of litmus paper, you can have the industry's best pocket-size pH tester.

The Checker supplies you with fast and accurate readings from 0 to 14 pH with a resolution of 0.01 pH.

This compact tester features a large easy-to-read LCD and a simple to perform 2-point calibration.

The pH electrode of the Checker can be replaced; simply unscrew the electrode from the meter body and screw on a new one.

The Checker is fast, accurate, lightweight and with 3000 hours of battery life, you don't have to worry about frequent battery replacement.

Testing pH has never been easier!

Item Code
  • SUPPHA98103
Item Description:
  • Hanna pH Checker 1 - HI98103

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Hanna DiST1 TDS Tester

DiST testers are reliable, pocket-sized instruments that will give you quick and accurate readings of conductivity and TDS.

This popular line of Dissolved Solids Testers have been redesigned to offer a host of improvements.

The casing has been modified to provide increased strength, a better fit for holding and a large LCD for easy viewing. The graphite sensors provide better repeatability since they do not oxidize. The casing has been engineered to allow air bubbles to escape. The temperature sensor is exposed to provide faster response time.

HI 98300, HI 98301 (DiST 1) and HI 98302 (DiST 2) perform TDS measurements, while HI 98303 (DiST 3) and HI 98304 (DiST 4) provide conductivity readings.

If calibration is necessary, simply submerge the electrode tip into calibration solution and adjust the trimmer on the side of the tester.

Item Code
  • SUPPHA98300
Item Description:
  • Hanna DiST1 TDS Tester - HI98300

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Hanna Waterproof TDS/EC/Temp Meter

The original DiST (Dissolved Solids Tester) was first introduced in 1986 by HANNA instruments. Since then, Conductivity and Total Dissolved Solids measurements have never been easier. DiST's ease-of-use, in combination with its affordability, made it the standard in EC and TDS measurement. HANNA instruments continues the tradition of innovation with the DiST 5 and DiST 6. Here at HANNA instruments we have always valued the comments and suggestions coming from our customers. For this series, we have included all the features you have asked for and more! The DiST 5 and DiST 6 include features such as a replaceable graphite electrode, adjustable TDS ratio, temperature in °C or °F, automatic temperature compensation (ATC) with adjustable ß, battery level indicator, stability indicator, automatic shut-off and automatic calibrating all in a floating, waterproof casing. This 3-in-1 tester is unmatched in EC/TDS/Temperature measurements!

Item Code
  • SUPPHA98311
Item Description:
  • Hanna Waterproof TDS/EC/Temp Meter - HI98311

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Hanna TDS Tester - PRIMO

The Primo TDS tester provides a fast and dependable way to measure the Total Dissolved Solids in your water samples. It is ideally suited for the rigorous demands of water quality professionals, who will appreciate the practicality of Primo's easy-to-read LCD when demonstrating the before and after results of conditioning and filtration systems. Temperature is compensated automatically to ensure the readings are consistent to the standard or reference temperature.

Operating and routine maintenance has never been easier. Primo TDS uses a single button at the top of the meter. Press it once and the meter is powered and ready for use. Press and hold the button for a few seconds and Primo automatically enters calibration mode. Simply open a sachet of the calibration solution, dip the probe and within seconds the meter recognizes the calibration solution and calibrates itself! Maximum battery life is managed by Primo's power microprocessor, which automatically turns it of after 5 minutes of inactivity.

Item Code
  • SUPPHATDSPR
Item Description:
  • Hanna TDS Tester - PRIMO

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Hanna Waterproof pH/Temp Soil Meter

The HI 99121 kit has been designed to address the question of correct and rapid measurement of pH directly in soil. Every item in this kit has been made to facilitate measurements in the field without compromising accuracy. With HI 99121 you can test the pH of soil directly or after preparation of a diluted sample. In order to measure the pH directly, the kit includes a plastic auger to perforate the ground.

The HI 1292D pH electrode has been designed for direct soil measurement. It has a conic, rugged tip and can be directly inserted in moist or soft soil. The electrode incorporates a temperature sensor right near the tip to enable it to measure and quickly compensate for temperature.

For higher degrees of accuracy, or for stony ground where the electrode may be damaged, use the specially made HI 7051M soil preparation solution. This solution is included in the package to help you measure pH more precisely by dilution.

The dual-level LCD shows the pH value from -2 to 16 with 0.01 resolution. It simultaneously displays the temperature on the secondary level. With a menu-driven custom microprocessor, the user is helped with clear prompts during operation and calibration.

Item Code
  • SUPPHA99121
Item Description:
  • Hanna Waterproof pH/Temp Soil Meter - HI99121

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We carry the following brands

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  • Hanna

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  • Myron L

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  • The Garden Spout in Santa Rosa, CA

    Location Map

    1236 Briggs Ave Santa Rosa, CA

    (707) 528-3500

    Store Hours: 9:30 AM - 6 PM Mon-Fri | 10 AM - 5 PM Saturday | Closed Sunday

    Have any questions? Let us know!

  • The Garden Spout in Portland, OR

    Location Map

    4532 SE 63rd Portland, OR

    (503) 788-GROW

    Store Hours: 10 AM - 7 PM Mon-Fri | 10 AM - 6 PM Sat-Sun

    Have any questions? Let us know!