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Specials
19 LED Green Head lamp
Hands-free headlamp for indoor horticulture emits a bright green light beam that doesn't disrupt your plant's growth cycle while you check up on them.
$24.95 $10.99
7-Day Grounded Digital Timer
Using a timer to automate lighting for your plants adds convenience and encourages productive growth with consistent hours of light. Timers are als
$24.99 $13.99
8" Raptor Reflector
This new mega reflector was designed with our customers' needs in mind. You wanted bigger, broader, brighter light coverage... our engineers built it
$274.95 $239.99
8" Raptor Reflector With Dual Lamps
Size matters! You wanted bigger, broader, brighter light coverage... our engineers designed it and then doubled it with our new Dual Raptor. This mega
$274.95 $245.00
8' Cord Set w/ Socket for Vertical Hanging
All SystemTM 8' Cord Set with socket for vertical hanging of compact fluorescents No external reflector brackets required Patent #s: U.S. 7025,479
$15.95 $12.95
Abscent Backpack Insert - Black
Abscent bags have the THICKEST, MOST CONCENTRATED CARBON LINER in the market today Premier Quality Activated Carbon Lining Mesh Lining to Prot
$120.00 $64.99
Abscent Large Duffel - Black
Abscent bags have the THICKEST, MOST CONCENTRATED CARBON LINER in the market today Premier Quality Activated Carbon Lining NEW ANTIMICROBIAL L
$275.00 $250.00
Abscent Large Duffel Insert - Black
Abscent bags have the THICKEST, MOST CONCENTRATED CARBON LINER in the market today Premier Quality Activated Carbon Lining NEW ANTIMICROBIAL L
$150.00 $100.00
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Specials
19 LED Green Head lamp
Hands-free headlamp for indoor horticulture emits a bright green light beam that doesn't disrupt your plant's growth cycle while you check up on them.
$24.95 $10.99
7-Day Grounded Digital Timer
Using a timer to automate lighting for your plants adds convenience and encourages productive growth with consistent hours of light. Timers are als
$24.99 $13.99
8" Raptor Reflector
This new mega reflector was designed with our customers' needs in mind. You wanted bigger, broader, brighter light coverage... our engineers built it
$274.95 $239.99
8" Raptor Reflector With Dual Lamps
Size matters! You wanted bigger, broader, brighter light coverage... our engineers designed it and then doubled it with our new Dual Raptor. This mega
$274.95 $245.00
8' Cord Set w/ Socket for Vertical Hanging
All SystemTM 8' Cord Set with socket for vertical hanging of compact fluorescents No external reflector brackets required Patent #s: U.S. 7025,479
$15.95 $12.95
Abscent Backpack Insert - Black
Abscent bags have the THICKEST, MOST CONCENTRATED CARBON LINER in the market today Premier Quality Activated Carbon Lining Mesh Lining to Prot
$120.00 $64.99
Abscent Large Duffel - Black
Abscent bags have the THICKEST, MOST CONCENTRATED CARBON LINER in the market today Premier Quality Activated Carbon Lining NEW ANTIMICROBIAL L
$275.00 $250.00
Abscent Large Duffel Insert - Black
Abscent bags have the THICKEST, MOST CONCENTRATED CARBON LINER in the market today Premier Quality Activated Carbon Lining NEW ANTIMICROBIAL L
$150.00 $100.00

Testing Supplies

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Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab calibration and conductivity standard solutions are essential for use with all Bluelab products for the calibration of pH and testing the cleanliness of the Bluelab Conductivity/Temperature probe. Bluelab solutions are manufactured specifically for Bluelab products and are referenced to high laborato..
$45.50
Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab calibration and conductivity standard solutions are essential for use with all Bluelab products for the calibration of pH and testing the cleanliness of the Bluelab Conductivity/Temperature probe. Bluelab solutions are manufactured specifically for Bluelab products and are referenced to high laborato..
$8.95
The instrument is only as accurate as the probe is clean. Probe cleaning is one of the most important parts of owning or operating any Bluelab meter, monitor or controller. The probe surface is where the instrument takes the reading of the solution. If the probe face is dirty or contaminated, then the reading will be inaccurate. Accurate readings simplify crop management and provide impro..
$18.00
Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab calibration and conductivity standard solutions are essential for use with all Bluelab products for the calibration of pH and testing the cleanliness of the Bluelab Conductivity/Temperature probe. Bluelab solutions are manufactured specifically for Bluelab products and are referenced to high labo..
$10.49
Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab calibration and conductivity standard solutions are essential for use with all Bluelab products for the calibration of pH and testing the cleanliness of the Bluelab Conductivity/Temperature probe. Bluelab solutions are manufactured specifically for Bluelab products and are referenced to high labo..
$10.59
The perfect solution to store and hydrate your Bluelab pH products. Bluelab knows it is extremely important to care for and store pH probes correctly. pH probes are sensitive glass instruments which age through normal use. The life and performance of pH probes is reduced heavily when they are stored dry. Bluelab pH Probe KCI Storage Solution is made specifically for use with Bluelab pH produ..
$14.29
Everything you need to clean, hydrate and calibrate pH probes. Probe cleaning and correctly storing pH probes ensures you get the most accurate readings possible and will maximize the life of a probe. The probe surface is where the instrument takes the reading of the solution or soil/media. If the probe face is dirty or contaminated, the readings may be inaccurate. pH probes specifically, should b..
$18.61
Control Wizard Products 1382 Conductivity Standard. Use to calibrate all meters that use the 1 EC to 500 ppm water standard. ..
$7.90
General Hydroponics™ uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics™ technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used. ..
$9.29
General Hydroponics™ uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics™ technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used. ..
$8.69
General Hydroponics™ uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics™ technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used. ..
$9.76
Everything you need to properly control the pH of your liquid fertilizer. pH Test Kit - 1oz. General Hydroponics pH Test Kits make pH testing easy. Simply 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. Many experienced growers prefer our pH Test Kit to expensive electronic meters because of its reliabilit..
$17.75 $14.00
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. ..
$12.74
TDS solution are produced with high-quality potassium chloride in various concentrations. They are standardized using a conductivity meter calibrated with NIST potassium chloride. HANNA® is one of the few producers to offer calibration solutions for lab and field applications with packages from 20 to 500 mL. Our packaging has been designed to keep air and light from damaging the calibration soluti..
$17.75
HANNA® packet solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards. The 20 mL sachets are single-dose and are ready to use. ..
$5.45
HANNA® packet solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards. The 20 mL sachets are single-dose and are ready to use. ..
$5.45
Hanna Instruments' solution, ideal for gardening, laboratory work, and field experiments, comes in a bottle designed to keep air and light from damaging the solution. ..
$17.75
These sachets are for use with the Hanna HI9813-6 GroChek portable pH/TDS/EC/Temp meter, which utilizes the Cal Check Solution to determine whether the probe is in need of cleaning or replacement. The sachets should only be used once, then discarded, in order to avoid contamination and improper readings. Sachets are sold in boxes of 25 pieces. ..
$27.96
HANNA® packet solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards. The 20 mL sachets are single-dose and are ready to use. ..
$5.45
Clean the liquid junction of your electrodes at least once a week to prevent clogging and to maintain accuracy. Immerse the electrode in the proper cleaning solution for about 5 minutes. Hanna Instruments offers a wide range of cleaning solutions, for general purpose and specific applications, to eliminate all kinds of dirt and deposits from the electrode, and thus ensure correct measureme..
$21.95
HANNA® packet solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards. The 20 mL sachets are single-dose and are ready to use. ..
$5.45
HANNA® packet solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards. The 20 mL sachets are single-dose and are ready to use. ..
$5.45
HANNA® packet solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards. The 20 mL sachets are single-dose and are ready to use. ..
$5.45
Hanna's buffer solutions are made from established formulas and are standardized with a pH meter calibrated to NBS/NIST primary standard buffer solutions. The 20 mL sachets are ideal for infrequent calibrations while for heavy-duty applications, you can choose from the popular 230 mL, 1 liter, or 1 gallon containers. Now the pH 4 buffers carry lot # and expiry date as well as pH/C chart on ev..
$20.25