Meters - Meters & Testers

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ActiveAir 3 - Way Meter

Gardeners can conveniently test their moisture, light, and pH levels with the handy ActiveAir 3-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist), light readings range from 0 (low light) to 2000 (very strong light), and pH readings between pH 0 (acidic) and pH 10 (basic) are represented. The durable, easy-to-read tester is suitable for indoors or out and needs no batteries to operate.
DO NOT LEAVE IN SOIL. CLEAN PRONGS AFTER EACH USE.

SKU:

MGMLP1

Retail: $9.95

Special Price: $9.45
AquaPro TDS/Temperature Meter
FEATURES
- Measures total dissolved solids (TDS) and temperature.
- Automatic Temperature Compensation (ATC)
- Water-resistant housing
- Measurement Range: 0-5000 ppm
- Digital Calibration (push button)
- Auto-off function, data-hold function and low-battery indicator.
- Display: large and easy-to-read LCD screen includes simultaneous temperature reading.
- The AquaPro is calibrated with a 342 ppm NaCl solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver.
- Magnetic back
- Includes a cap and batteries.
SKU:

HMDAP1

Retail: $42.95

Special Price: $35.96
Batteries for pH/TDS pen, 4-pack

Contains four (4) batteries per pack, 6 packs per case.

SKU:

HGPROBAT

Retail: $6.95

Special Price: $6.60

BlueLab Combo Meter

The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. It comes with a pH probe and conductivity and temperature probe, which are simply placed into the solution and the selected reading is displayed on screen. The Bluelab Combo Meter is portable and does not require a power supply. Calibration of the pH is very easy, using the push buttons on the meter and fresh Bluelab calibration solutions. Conductivity and temperature do not need to be calibrated as this is locked in during manufacture. Select display options for C or F and EC, CF or ppm.

SKU:

BLU2300E

Retail: $308.00

Special Price: $237.16
Bluelab Guardian Monitor
Seasonal changes, sunlight hours, wind, inherent plant growth; from vegetative to fruiting; are all influencing factors to plant growth success. But more importantly, these parameters change the plants uptake and need of water and specific nutrient elements. The Bluelab Guardian is a constant indicator of the desired levels of EC, pH and temperature, enabling the grower to optimize these parameters as the crop progresses through each growing phase.
The Bluelab Guardian removes the complexity of how each parameter relies on each other for outstanding growth. Our innovative monitor is a new method to help guard the success of your crops with immediate and accurate results. A flashing display lets you know if one parameter moves away from the ideal, allowing you to make the required adjustments quickly and effectively.
Features:
- Adjustable brightness display
- Large easy to read displays
- ‘Plant Safe' green LED display
- Selectable values for conductivity and temperature
- Simple push button pH calibration
- No calibration required for conductivity and temperature
- Silent alarm for both high and low settings
- Settings retained when power lost (non-volatile memory)
- Temperature compensated
- International power supply
- Water resistant design
- 2 year guarantee (6 months for pH probe)
SKU:

BLU27100

Retail: $364.00

Special Price: $280.28
Bluelab pH and PPM Pen Meter Combo Kit - Free Shipping

The Bluelab pH Pen is the latest innovation for hand held pH meters and is the ultimate handy solution for measuring pH. Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control. The Bluelab pH Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. Teamed with our Bluelab EC Pen or Bluelab ppm Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health. The Bluelab pH Pen and conductivity pen range has been specially developed as an affordable and effective option for hobby or small scale growers. Features: Measures pH and temperature Selectable units for ˚C & ˚F Backlit LCD display Double junction probe (not replaceable) Successful calibration indicator Hold function Low battery warning Fully waterproof Auto off function Automatic temperature compensation The Bluelab conductivity pens are the latest innovation for hand held conductivity meters and the ultimate handy solution for measuring conductivity. Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control. The Bluelab Conductivity Pens measure how much food the plant has available. The Bluelab ppm pen provides a compact, quick and handy way to manage the success of your crops to ensure they have the nutrients they need. Teamed with Bluelab's pH Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health. The Bluelab pH Pen and conductivity Pen range has been specially developed as an affordable and effective option for hobby or small scale growers. Features: Measures conductivity and temperature Selectable units for conductivity and temperature Backlit LCD display Calibration optional Successful calibration indicator Hold function Low battery warning Fully waterproof Auto off function Automatic temperature compensation

SKU:

BLU2221COMBO

Retail: $199.00

Special Price: $145.00

Bluelab pH meter with probe
Portable, easy-to-use pH meter that accurately measures pH anytime, anywhere to help you maintain optimum levels and improve plant development.
Main Features
- Quality pH probe included
- Calibration solutions included
- Simple push button pH calibration
- Auto turn off function
- Large 13mm (1/2in) digital display for easy reading
- Low battery indicator
- 2 x AAA batteries
- Light weight and portable
SKU:

BLU2320E

Retail: $210.00

Special Price: $161.70
Bluelab pH Pen

The Bluelab pH Pen is the latest innovation for hand held pH meters and is the ultimate handy solution for measuring pH.Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control.The Bluelab pH Pen provides a compact quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. Teamed with our Bluelab EC Pen or Bluelab ppm Pen you have a handy convenient and accurate system for ensuring optimum plant growth and health.The Bluelab pH Pen and conductivity pen range has been specially developed as an affordable and effective option for hobby or small scale growers.Features:; Measures pH and temperature; Selectable units for C & F; Backlit LCD display; Double junction probe (not replaceable); Successful calibration indicator; Hold function; Low battery warning; Fully waterproof; Auto off function; Automatic temperature compensation;

SKU:

BLU2210

Retail: $112.50

Special Price: $86.62
Bluelab pH Replacement Electrode for Guradian & Combo & pH Meter

Easy to clean because of its bullet shaped glass bulb. Fully waterproof and less fragile than all-glass electrodes because of its tough polypropylene barrel. Gel filled (non-refillable) making it maintenance free and a double junction reference providing longer life!

SKU:

BLU24102

Retail: $81.95

Special Price: $63.10

Bluelab ppm Pen

The Bluelab conductivity pens are the latest innovation for hand held conductivity meters and the ultimate handy solution for measuring conductivity.Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control.The Bluelab Conductivity Pens measure how much food the plant has available.The Bluelab ppm pen provides a compact quick and handy way to manage the success of your crops to ensure they have the nutrients they need. Teamed with Bluelab's pH Pen you have a handy convenient and accurate system for ensuring optimum plant growth and health.The Bluelab pH Pen and conductivity Pen range has been specially developed as an affordable and effective option for hobby or small scale growers.Features:; Measures conductivity and temperature; Selectable units for conductivity and temperature; Backlit LCD display; Calibration optional; Successful calibration indicator; Hold function; Low battery warning; Fully waterproof; Auto off function; Automatic temperature compensation

SKU:

BLU2221

Retail: $94.00

Special Price: $72.38
Bluelab Soil pH Meter

A portable, easy to use Soil pH meter that asssits in maintaining optimum soil condition for improved plant development.

SKU:

BLU2330E

Retail: $240.00

Special Price: $184.80
Bluelab Soil pH Pen

Bluelab soil pH Pen - get your hands on Bluelab's newest hand held meter.

This clever Soil pH Pen will help you manage the success of soil grown crops. The Soil pH Pen provides a pH and temperature reading of soils and media, so you know the right nutrients will be made available to your plants. It will measure solutions also...

SKU:

BLU2216

Retail: $185.00

Special Price: $142.45

Bluelab Soil pH Probe

Soil acidity and alkalinity are common fertility problems that can cause stunted growth and abnormally coloured leaves. If you are having trouble determining the reasons for poor growth or plant health, testing the pH of the soil/media is a great place to start.
Low soil pH causes aluminium ands manganese toxicity in plants and reduces the availability of soil phosphorus. High soil pH also reduces soil phosphorus availability and reduces micronutrients such as zinc and boron to plants.
This high quality pH probe is designed specifically for measuring the pH of soils.
It can easily be fitted to the Bluelab pH Meter or Bluelab Combo Meter.

SKU:

BLU24115

Retail: $110.00

Special Price: $84.70
Bluelab Truncheon

The amazing Truncheon EC meter from Bluelab uses flashing lights to show the EC, CF and PPM readings. Truncheons are very accurate, reliable, and come with a five year warranty.

SKU:

BLU2000E

Retail: $140.00

Special Price: $107.80
Bluelab Truncheon Contact Ring Replacement

Contact Rings are replaced on the pH Truncheon every six months to avoid contamination of the actual probe cell. They come in a sealed foil pack of three to keep them moist.

SKU:

BLU600410

Retail: $11.94

Special Price: $8.36

Champ pH Tester
Champ is a rugged pH meter withsingle point calibration and a battery life of over 1 yeareven if used for 1 hour everyday. The new design features a larger LCD someasurments are easier to read from any angle. Champ comes with a protective cap thatcan be used to hold storage solution or as a meaurement vessel. The electrodeitself is replaceable by the user and has a non-clogging fiber junctionwhich makes it last much longer. The Champ can be used for Research, Science, Laboratory, Education, Aquariums, Hydroponics, Pools and more.
- Accuracy (@20C/68F): 0.2 pH
- Calibration: Manual 1 point
- Temperature Compensation: NA
- Battery Type / Life 400 hours
SKU:

HI98106

Retail: $62.95

Special Price: $50.36
Checker pH Tester with Replaceable Electrode

The Checker supplies you with fast and accurate readings from 0.00 to 14.00 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 Checker is fast, accurate, lightweight and with 3000 hours of battery life, you don't have to worry about frequent battery replacement.

SKU:

HI98103

Retail: $40.95

Special Price: $32.76
Combo pH/EC/TDS/C/PPM Tester
- Dual-level LCD
- Replaceable pH Electrode Cartridge
- Automatic Caliibration
SKU:

HI98129

Retail: $194.95

Special Price: $157.04

Continuous pH/TDS/temp Monitor

Designed for continuous monitoring of pH, TDS and temperature the HI 981504 is simple to install and can be placed above the sample to be tested. pH, TDS and temperature measurements are simultaneously displayed on three backlit LCDs which can be easily viewed at a distance - even in low light. This means no more switching between parameters.
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. Temperature range is factory calibrated.

SKU:

HI9815047

Retail: $262.95

Special Price: $202.47
DiST 1 TDS Tester
- Automatic Temperature Compensation
- Simple 1 Point Calibration
- Easy-to-use and Inexpensive
SKU:

HI98301

Retail: $77.95

Special Price: $60.02
DiST 5 EC/TDS Meter
- Dual-level LCD
- Replaceable Graphite Electrode Cartridge
- Automatic Calibration
SKU:

HI98311

Retail: $130.95

Special Price: $100.83

EC65 Waterproof Tester
The C65 is a microprocessor based Conductivity Tester with a rugged one-piece IP67 waterproof casing. Immersible up to the LCD! This instrument is a low cost and easy to use Meter with a replaceable electrode.

Some of the C64's features include:
- Automatic Temperature Compensation
- IP67 Waterproof Casing
- Replaceable Electrode
- Easy to Read LCD
- Easy to Use
Range 0 - 1999 S/cm
Resolution-1 S/cm
Accuracy - 2% full scale
Calibration - Manual 1 point
Electrode - Replaceable MA73075Temp.
Compensation - Automatic 0 - 50C
Battery Life - 250 hours of continuous useBattery Type 3 x 1.5V
Environment 0 - 50C / 100% RH
SKU:

MIC65

Retail: $80.95

Special Price: $59.25
Eco Tester TDS High

New economical conductivity and TDS pocket meters feature a large, ergonomically designed display so that you can easily view measurements at a glance. The orientation of the display means there's no need to turn your head or tilt the tester. Waterproof and dustproof housing is designed for use in dirty and damp field conditions. Convenient, built-in belt/pocket clip keeps the tester accessible when not in use.
Stainless steel electrodes are both rugged and chemical resistant, for use in a wide variety of applications. Single-point electronic calibration means you are ready to measure quickly and easily. Additional features include auto-shutoff to prolong battery life, hold function to lock in a measured value, and self-diagnostic error messages. Testers also have a self-adjusting TDS factor from 0.40 to 1.0.

SKU:

OK3546215

Retail: $84.95

Special Price: $76.19
Eco Tester TDS Low

New economical conductivity and TDS pocket meters feature a large, ergonomically designed display so that you can easily view measurements at a glance. The orientation of the display means there's no need to turn your head or tilt the tester. Waterproof and dustproof housing is designed for use in dirty and damp field conditions. Convenient, built-in belt/pocket clip keeps the tester accessible when not in use.
Stainless steel electrodes are both rugged and chemical resistant, for use in a wide variety of applications. Single-point electronic calibration means you are ready to measure quickly and easily. Additional features include auto-shutoff to prolong battery life, hold function to lock in a measured value, and self-diagnostic error messages. Testers also have a self-adjusting TDS factor from 0.40 to 1.0.

SKU:

OK3546210

Retail: $84.95

Special Price: $76.19

Floating Thermometer

Delivers easy and accurate readings of your water temperature. The gauge floats and has a pressure sensitive backing for easy mounting. It features readings in both Celsius and Fahrenheit, as well as clear markings that delineate ideal nutrient temperature.

SKU:

HGFLT

Retail: $2.09

Special Price: $1.98
General Hydroponics pH Test Indicator 8 oz

Fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid in the test vial. Use 3 drops per 5mL of solution.

SKU:

GH1516

$12.60
General Hydroponics pH Test Kit 1 oz

pH test kit

SKU:

GH1515

$10.80

Gro'chek replacement probe for Model HI9813-6 Probe HI1285-6

Gro'chek Replacement Probe for H19813-6

SKU:

HI1285-6

Retail: $138.95

Special Price: $106.99
GroChek EC Monitor
- Waterproof
- Rugged Housing
- Large LCD
SKU:

HI983302N

Retail: $114.95

Special Price: $88.51
GroChek Hanna EC/TDS Monitor w/ HI7632 EC Probe
- large liquid crystal display for easy reading
- housing completely sealed against vapors and humity
- probe automatically compensates for temperature variation
SKU:

HI983301N

Retail: $114.95

Special Price: $88.51

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