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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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Meters


Bluelab Commercial Truncheon® Meter Bluelab Commercial Truncheon Meter
With a conductivity range right up to 6.0 EC (60 CF, 3000 ppm x 500 and 4200 ppm x 700), it will never leave you short. The Bluelab Commercial Truncheon® Nutrient Meter has been designed for hydroponic crops that require a higher than normal EC or ppm requirement during their growing cycle. Its super tough, fully waterproof, has no on/off buttons to worry about and does not need calibrating. EC (0.4 - 6.0), CF (4 - 60) and ppm scales (TDS and 700 scale). Auto sense on and off. Battery life minimum 1 year (or shelf life of battery). Meter length: 40.7cm or 16-1/32 in.
Instructions (PDF Document)
Data Sheet (PDF Document)
List - $140.00
-15% Off - Discount price $119.00
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Bluelab Original Truncheon® Meter Bluelab Original Truncheon® Meter
With a conductivity range right up to 6.0 EC (60 CF, 3000 ppm x 500 and 4200 ppm x 700), it will never leave you short. The Bluelab Commercial Truncheon® Nutrient Meter has been designed for hydroponic crops that require a higher than normal EC or ppm requirement during their growing cycle. Its super tough, fully waterproof, has no on/off buttons to worry about and does not need calibrating. EC (0.4 - 6.0), CF (4 - 60) and ppm scales (TDS and 700 scale). Auto sense on and off. Battery life minimum 1 year (or shelf life of battery). Meter length: 40.7cm or 16-1/32 in.
Instructions (PDF Document)
Data Sheet (PDF Document)
List - $140.00
-15% Off - Discount price $119.00
Qty:   

Blue Lab Combo Meter
Blue Lab Combo Meter
The Bluelab® Combo Meter is a conductivity, pH and temperature meter all in one. As the Bluelab® Combo Meter is portable and does not require a power supply to operate, it can be used anytime and anywhere to help you manage your crops daily nutrient requirements. Simple push button pH calibration. Successful pH calibration indicators. Low battery indicator. Over range and under range indicators. Display options available in degrees °C & °F, EC, CF, ppm 500 and ppm 700. Supplied with 2x AAA alkaline batteries, replaceable double junction pH probe and solution sachets.
Instructions (PDF Document)
Data Sheet (PDF Document)
$308.00   Sale $261.80
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Bluelab pH Meter
Bluelab pH Meter
The Bluelab® pH Meter is used to accurately measure the pH value of a solution. Simply place the 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. Calibration is simple with the push buttons on the meter and fresh Bluelab® calibration solutions. Supplied with double junction Bluelab® pH probe, 20 ml solution sachets and batteries. Range: 0.0 – 14.0 pH. Resolution: 0.1 pH. Accuracy @ 25°C: ±0.1 pH. Power Source: 2 x AAA batteries included. Features: auto turn off, low battery indicator, over range and under range indicators, portable.
Instructions (PDF Document)
Data Sheet (PDF Document)
$210.00   $178.50
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Replacement pH Probe for Blue Lab Meters
$81.95   Sale $63.00
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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
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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
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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
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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
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Replacement Sensor - Oakton pH 10/20/30
$99.95   Sale $79.80
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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
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Calibration Solutions

General Hydroponics
pH 4.01 Calibration Solution
General Hydroponics
8 oz size
$7.54
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General Hydroponics
pH 7.0 Calibration Solution
General Hydroponics
8 oz size
$7.54
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General Hydroponics
EC Calibration Solution - 1500 ppm
8 oz size
$8.20
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EcoPlus® Large Display Thermometer/Hygrometer


EcoPlus® Large Display Thermometer/Hygrometer
Features...
  • 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
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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
$8.95
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