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A Modern Herbal
A hyper-text version of A Modern Herbal, 1931, by Mrs. M. Grieve. Over 800 varieties of medicinal, culinary, and cosmetic herbs, including economic properties, cultivation and folk-lore.
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Bluelab Truncheon Nutrient Meter Bluelab Truncheon Nutrient Meter
The Bluelab Truncheon Nutrient Meter measures the nutrient strength of a solution. It is essential when growing hydroponics to KNOW what the strength of the solution is before feeding your plants AND while they are growing.
To take a reading of your solution - simply place the probe head into the solution for 1-2 minutes to reach the same temperature of your nutrient. Remove from the solution and place back in to take the reading as indicated by the flashing lights. Rinse the probe after use in fresh water and clean once a week to ensure the Truncheon Nutrient Meter remains accurate. It's great for stirring your nutrient tank too!
Main Features
  • EC(0.2 - 3.6), CF(2 - 36) and ppm scales(TDS and 700 scale)
  • Fully waterproof
  • Factory calibrated
  • Auto sense on and off
  • No external switches or adjustable buttons
  • Battery life minimum 1 year (or shelf life of battery)
Suitable Applications
  • Hydroponics
  • Horticulture
  • Floriculture
5 year Bluelab Guarantee
Bluelab Truncheon Technical Specifications.pdf
List - $135.00
-15% Off - Discount price $114.75

Blue Lab Combo Meter
Blue Lab Combo Meter
  • Light weight and portable
  • Measures pH, Nutrient and Temperature
  • Three display options for nutrient - EC, CF, ppm (500 scale)
  • Two display options for temperature (°C or °F)
  • Three calibration points, 4, 7 and 10 pH
  • Temperature at a push of a button
  • Simple push button pH calibration
  • Auto turn off function
  • Large 13mm (1/2”) digital display for easy reading
  • Supplied with quality probes and pH calibration solutions
  • Low battery indicator
  • Long life 3 AAA batteries
  • 5 year Bluelab Guarantee (6 mo for pH probe)
Bluelab Combo Meter Technical Specification pdf
$308.00   Sale $231.00

Bluelab pH Meter
Bluelab pH Meter
The Bluelab pH Meter is used to accurately measure the pH value of a solution. Simply place the pH probe into the solution and the reading will be displayed on the screen. As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements. It is easy to calibrate by using the push buttons on the meter and fresh Bluelab calibration solutions.
  • Supplied with standard Bluelab pH probe, solutions (sachets) and batteries.
  • Range: 0.0 – 14.0 pH.
  • Resolution: 0.1 pH.
  • Accuracy @ 25°C: ± 0.1 pH.
  • Power Source: 2 x AAA.
  • Features: auto turn off, low battery indicator, over range and under range indicators, portable.
  • 5 year Bluelab Guarantee (6 mo. for probe)
Bluelab pH Meter Technical Specifications.pdf
$210.00   $157.60

Replacement pH Probe for Blue Lab Meters
$81.95   Sale $63.00

Bluelab Nutrient Probe Cleaning Kit
Bluelab Nutrient Probe Cleaning Kit
  • Full color laminated instructions
  • Conductivity standard solution
  • De-canter vessel
  • Liquid probe cleaner
  • Chamois (probe cleaning instrument)
$21.50   Sale $18.25


HM Digital Hanheld TDS-3 Tester
HM Digital Hanheld TDS-3 Tester
  • Ideal for commercial use. Includes a carrying case with belt clip.
  • Measurement Range: 0-9990 ppm.
  • Display: large and easy-to-read LCD screen.
  • Built-in digital thermometer
  • Highly efficient and accurate due to its advanced microprocessor technology.
  • Hold Function: saves measurements for convenient reading and recording.
  • Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries.
  • Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.
  • 3 year warranty.
$36.95   Sale $29.60

Oakton Double Junction pHTESTR 10

Oakton Double Junction pHTESTR 10
• Body gaurentted for 1 yr, Probe for 6 mo
• Automatic Temperature Compensation (ATC)
• Push-button three-point calibration
• Microprocessor-based
• Auto buffer recognition
• Hold function; auto-off; error messages
• Certifiable to IP67 standards
• pH range -1.0 to 15.0 pH
$136.95   Sale $109.60


Oakton Waterproof Dbl. Junction pHTestr 30
Oakton Waterproof Dbl. Junction pHTestr 30
• High ±0.01 pH accuracy
• Simultaneous pH and temperature (°C) display
• pH range - 1.0 to 15.0 pH
• Three point push-button calibration
• Double junction electrode ideal for dirty water, heavy sulfides & organics
• Increased reference gel volume offers significantly longer electrode life
• Certifiable to IP67 standards—waterproof and dustproof housing floats
• Replaceable sensor lets you reuse same meter body, saving you money
• Automatic temperature compensation
Instruction Manual (155 KB)
$165.95   Sale $132.80

Replacement Sensor - Oakton pH 10/20/30
$99.95   Sale $79.80


Electrode Storage Solution
Electrode Storage Solution
Use to store your pH meter electrode between use. This solution is designed to keep your electrode sensing membrane and reference junction clean and unclogged and ready for use. Store you electrode directly in a small cup of solution or saturate a sponge in the cap of your meter for storage between use. This will prevent your permeable glass membrane from becoming dry and from mineral deposits clogging the surface. This solution is designed to equalize the osmotic pressure of the reference solution in your meter junction to keep the reference solution from seeping out and prematurely aging your meter. Should your electrode membrane dry out soak it in this solution for at least two hours before use. NEVER STORE AN ELECTRODE IN DISTILLED OR DEIONIZED WATER.
8 oz. - Electrode Storage Solution
$10.00   Sale $9.00
Calibration Solutions

General Hydroponics
pH 4.01 Calibration Solution
General Hydroponics
8 oz size

General Hydroponics
pH 7.0 Calibration Solution
General Hydroponics
8 oz size

General Hydroponics
EC Calibration Solution - 1500 ppm
8 oz size


EcoPlus® Large Display Thermometer/Hygrometer

EcoPlus® Large Display Thermometer/Hygrometer
  • Stores the Min./Max. values of the indoor/outdoor temperature and indoor humidity.
  • Measures indoor/outdoor temperature & indoor humidity
  • Switch between C and F.
  • Clock function with alarm
  • 12/24 hour mode switch
  • Water proof temperature probe
  • Uses 1 AAA battery (not included)
List - $25.95   Sale $21.25

Rapitest Mini pH Tester

Rapitest Mini pH Tester [model 1815]
• Tests the acidity of soil
• Check which plants suit your soil
• Enables you to alter soil conditions
• Use for fruits, flowers, shrubs and vegetables
• No batteries required

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