PH and EC / PPM

102 products

  • Luster Leaf Digital Moisture Meter

    Luster Leaf Luster Leaf Digital Moisture Meter

    Out of stock, 1-3 weeks

    Digital results from 0 to 9.9. Printed instructions and extensive plant list.

    Out of stock, 1-3 weeks

    $18.59

  • Luster Leaf Mini Moisture Tester

    Luster Leaf Luster Leaf Mini Moisture Tester

    Out of stock, 1-3 weeks

    Luster Leaf Mini Moisture Tester

    Out of stock, 1-3 weeks

    $8.99

  • Last stock! Bluelab Probe Care Kit - Conductivity Probe

    Bluelab Bluelab Probe Care Kit - Conductivity Probe

    2 in stock In stock

    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. If the probe is contaminated or dirty, it affects the accuracy of the reading displayed. Conductivity kit contents: instructions, 500ml 2.77 EC solution, plastic cup, conductivity probe cleaner and chamois (probe cleaning instrument).

    2 in stock In stock

    $31.00

  • Sale -10% HM Digital PH80 pH/Temperature Meter

    HM Digital HM Digital PH80 pH/Temperature Meter

    Out of stock, 1-3 weeks

    Resolution: pH 0.1 pH, 0.00–14.0 pH. Accurate to +/-0.1 pH. Hold button and auto shut-off. Automatic calibration: Auto-ranging to 4, 7 or 10 pH. Very reliable and long lasting. Low battery indicator. Clear cap to notice moisture (or lack of) on probe. Glass encased reference electrode helps retain moisture. Batteries included.

    Out of stock, 1-3 weeks

    $49.29 $44.36

  • Sale -10% Ambrosia Cropz pH Up Formula - 5lb

    Ambrosia Cropz Ambrosia Cropz pH Up Formula - 5lb

    4 in stock In stock

    4 in stock In stock

    $39.99 $35.99

  • Luster Leaf Rapitest 3-Way Digital Analyzer

    Luster Leaf Luster Leaf Rapitest 3-Way Digital Analyzer

    Out of stock, 1-3 weeks

    Luster Leaf Rapitest 3-Way Digital Analyzer

    Out of stock, 1-3 weeks

    $40.99

  • Bluelab pH Probe KCl Storage Solution 120ML

    Bluelab Bluelab pH Probe KCl Storage Solution 120ML

    Out of stock, 1-3 weeks

    The perfect solution to store and hydrate your Bluelab pH products. Bluelab pH Probe KCl Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and maximize the life of Bluelab pH pens and pH probes. For best results, use the KCl solution to store the pH pen/probe after use and hydrate monthly. Bluelab pH Probe KCl Storage Solution is manufactured to high laboratory standards.

    Out of stock, 1-3 weeks

    $12.58

  • LUSTER LEAF Mini 4-in-1 Tester

    Luster Leaf LUSTER LEAF Mini 4-in-1 Tester

    6 in stock In stock

    LUSTER LEAF Mini 4-in-1 Tester

    6 in stock In stock

    $18.99

  • Sale -10% Bluelab Multimedia pH Meter with Leap pH Probe

    Bluelab Bluelab Multimedia pH Meter with Leap pH Probe

    Out of stock, 1-3 weeks

    The perfect, portable way to accurately measure and monitor pH levels in a wide range of media. We have combined the Bluelab Multimedia pH Meter and Bluelab Leap pH Probe to take fast, accurate measurements in nutrient solution, soil, coco coir, rockwool, potting mix and many other media types. Calibration is simple with one push button on the meter and fresh Bluelab Calibration Solutions. Successful calibration indicator is displayed on screen for 30 days to indicate when re-calibration is required. The Bluelab Leap pH Probe is suitable for use with all Bluelab products that use a BNC connection. Team with the Bluelab Solutions and the convenient Bluelab Carry Case (#716440). 2 m / 6.6 ft standard cable included.

    Out of stock, 1-3 weeks

    $295.74 $266.17

  • Sale -10%Last stock! Bluelab pH Controller

    Bluelab Bluelab pH Controller

    1 in stock In stock

    Hands-free monitoring and dosing of solution pH levels. Our clever pH controller automatically monitors and fine-tunes the pH levels for you. You simply set it and forget. The pH is taken care of. For use with reservoirs up to 200 US gal/760 L. Plant-safe green backlit LCD with adjustable brightness and large, easy-to-read display. Easy to navigate menu to program, adjust settings and calibrate by a simple push of a button. Flashing high/low alarm with control lockouts to protect from over-dosing. Auto resume dosing on restart after power loss. Includes: water-resistant, wall mount housing, 13 ft acid/alkali resistant dosing tube, international power supply, replaceable double junction pH probe and temperature probe (for pH ATC). Use with undiluted Bluelab pH Up or Down. 6 month guarantee for Bluelab pH Probe.

    1 in stock In stock

    $740.94 $666.85

  • Luster Leaf Rapitest Electronic Soil Tester

    Luster Leaf Luster Leaf Rapitest Electronic Soil Tester

    3 in stock In stock

    Luster Leaf Rapitest Electronic Soil Tester

    3 in stock In stock

    $29.49

  • Sale -10% Bluelab Truncheon

    Bluelab Bluelab Truncheon

    Out of stock, 1-3 weeks

    With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to worry about, the Bluelab Truncheon Nutrient Meter has proven itself as the world's favorite nutrient meter. It is powered by three standard AA batteries. EC (02-3.6), CF (2-36) and ppm scales (TDS and 700 scale). Fully waterproof design. No calibration required. Auto sense on and off. No external switches or adjustable buttons. Meter length: 40.7cm or 16 1/32in. 5 year Bluelab Guarantee.

    Out of stock, 1-3 weeks

    $157.94 $142.15

  • Sale -10% Bluelab Leap pH Probe (Probe Only)

    Bluelab Bluelab Leap pH Probe (Probe Only)

    Out of stock, 1-3 weeks

    The perfect, portable way to accurately measure and monitor pH levels in a wide range of media. We have combined the Bluelab® Multimedia pH Meter and Bluelab® Leap™ pH Probe to take fast, accurate measurements in nutrient solution, soil, coco coir, rockwool, potting mix and many other media types. Calibration is simple with one push button on the meter and fresh Bluelab® Calibration Solutions. Successful calibration indicator is displayed on screen for 30 days to indicate when re-calibration is required. The Bluelab® Leap™ pH Probe is suitable for use with all Bluelab® products that use a BNC connection. Team with the Bluelab® Solutions and the convenient Bluelab® Carry Case (#716440). 2 m / 6.6 ft standard cable included.

    Out of stock, 1-3 weeks

    $136.74 $123.07

  • Last stock! Luster Leaf Electronic 4-Way Analyzer

    Luster Leaf Luster Leaf Electronic 4-Way Analyzer

    2 in stock In stock

    Luster Leaf Electronis 4-Way Analyzer

    2 in stock In stock

    $39.99

  • Sale -10%Last stock! Bluelab Connect Stick 2

    Bluelab Bluelab Connect Stick 2

    1 in stock In stock

    Get Connected. Improve crop performance and reduce errors with the power of data and remote monitoring. Receive wireless monitoring data from all Bluelab Connect devices to your computer and smartphone or tablet. Receive important push notifications on your mobile device so you can respond immediately to changes, support growing decisions and improve crop performance. Send wireless data 100m/330ft to and from Connect devices within the growing environment and up to 400m/1312ft in open space (line-of-sight). Only one Connect Stick 2 required to receive wireless data from up to 50 Connect devices. Send Bluelab Connect wireless data further in large growing facilities and environments. Simply plug the Bluelab Range Extender 2 into a power supply between Bluelab devices and Bluelab Stick 1 or 2 to increase the wireless signal range. For extra-long distances, multiple Bluelab Range Extender 2s can be used. Increase the wireless range between Bluelab Connect devices and the computer by up to four times when Connect Range Extender 2 is paired with Connect Stick 2.

    1 in stock In stock

    $168.54 $151.69

  • Sale -10%Last stock! HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp

    HM Digital HM Digital HydroMaster Portable/Wall Mount/Bench Continuous pH/EC/TDS/Temp

    1 in stock In stock

    HydroMaster Digital testers make monitoring water easier than ever by reading the levels that matter most and providing accurate readings that you can depend on. Continuous pH/EC/TDS/Temp monitor with rechargeable battery. Portable, wall mount, or benchtop use.HydroMaster HM-500 pH/EC/TDS/¬∞F Tester (113831)‚Ä¢ Tests pH at a range of 0 pH-14 pH, temperatures from 30¬∞F-176¬∞F, TDS from 0-9999 ppm and EC from 0-9999 ŒºS‚Ä¢ Stores up to 20 measurement readings, so you can monitor changes over time‚Ä¢ LCD touch-type screen with auto backlighting‚Ä¢ Powered by a rechargeable lithium ion battery‚Ä¢ Features an adjustable alarm that has a high and low set point‚Ä¢ Automatically turns off after 5 minutes‚Ä¢ Comes with wall mountable bracket, USB cable, 2 flotation disks, 1 EC/TDS conductivity sensor, 1 pH sensor, 1 packet each pH 4, pH 7, storage solution, and 1000 ppm calibration solution‚Ä¢ 110V-220VThree year warranty (6 month warranty on the pH probe)

    1 in stock In stock

    $359.00 $323.10

  • Sale -10% Milwaukee MA871 Digital Brix Refractometer

    Milwaukee Milwaukee MA871 Digital Brix Refractometer

    Out of stock, 1-3 weeks

    The Milwaukee digital BRIX refractometer is temperature compensated with a 0 to 85 percent BRIX range and +/- 0.2 percent accuracy. It is easy to use with simple two button operation and fast with a response time under 2 seconds. Maintenance is a breeze also with an easy-to-clean sealed flint glass prism and stainless steel well.DESIGN FEATURESFast, accurate results with digital dual level LCD readout. Easy measurement with just 2-3 drops of sample needed and results less than 2 seconds. Simple one-point calibration using distilled or deionized water. Easy to clean, stainless steel sample well with unit rated to IP65 as "dust tight" and protected against water jets. Battery percent level indicator with automatic shut-off (batteries included). Ideal for winemakers, brewers, fruit and vegetable growers, maple syrup producers, and food producers. The measurement technique and temperature compensation employ methodology recommended in the ICUMSA Methods Book (Internationally recognized body for Sugar Analysis).

    Out of stock, 1-3 weeks

    $149.00 $134.10

  • Sale -10% HM Digital COM80 EC/TDS/Temp Waterproof Hydro Tester

    HM Digital HM Digital COM80 EC/TDS/Temp Waterproof Hydro Tester

    Out of stock, 1-3 weeks

    The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Measures electrical conductivity (EC), total dissolved solids (TDS). Excellent for hydroponic nutrient testing. Four scales: EC: , mS; TDS: ppm, ppt Automatic Temperature Compensation (ATC) Water resistant Measurement Range: 0-9990 µS; 0-5000 ppm; 0-9.9 mS; 0-5.0 ppt Digital Calibration (push button) to any point within the meter's range Auto-off function, data-hold function and low-battery indicator Display: large and easy-to-read LCD screen includes simultaneous temperature reading Factory Calibrated: The COM-80 meter is calibrated with a 1413 µS solution can be recalibrated with digital calibration using the push buttons Includes a protective cap and batteries. SPECIFICATIONS EC Range: 0-9990 µS; 0-9.9 mS TDS Range: 0-5000 ppm (mg/L); 0-5.0 ppt Temperature Range: 1-80F Resolution: 1µS/ppm; 0.1 mS/ppt Temp. resolution: 0.1C/F Accuracy: +/- 2% EC-to-TDS Conversion Factor: NaCl (avg of 0.5) Calibration: Digital calibration by push button Probe: Fixed Housing: Water resistant Power source: 3 x 1.5V button cell batteries (included) (model LR44 or equivalent) Dimensions: 15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 inches) Weight: 53.9 g (1.9 oz) 1 year warranty

    Out of stock, 1-3 weeks

    $46.44 $41.79

  • Bluelab Conductivity Pen

    Bluelab Bluelab Conductivity Pen

    8 in stock In stock

    Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is optional. Fully waterproof. Auto off function and hold reading function. Automatic temperature compensation. Units: EC, 500 ppm, 700ppm, F. Range: 0.05000 ppm (500 ppm), 0-7000 ppm (700 ppm) and 0-50C/32-122F. Resolution: 0.1 EC, 10 ppm (500 ppm), 10 ppm (700 ppm) and 1C/1F. Accuracy @ 25 C: ±0.1 EC (@ 2.77 EC) ±50 ppm (500 ppm) (@ 1385 ppm) ±70 ppm (700 ppm) (@ 1940 ppm) and ±1F. Battery type: 1 x AAA alkaline.

    8 in stock In stock

    $99.00

  • Bluelab pH Pen

    Bluelab Bluelab pH Pen

    Out of stock, 1-3 weeks

    Measures pH and temperature. Selectable units for °C and °F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration indicator. Hold reading function and low battery warning. Fully waterproof with auto off function. Automatic temperature compensation. Along with Bluelab pH Probe KCI Solution, Bluelab pH 7 and Bluelab pH 4 Solution Sachets are now included. Range: 0.0–14.0 pH/0–50°C/32°–122°F. Resolution: 0.1 pH/1°C/1°F. Accuracy @ 25°C: ±0.1 pH. Battery type: 1 x AAA alkaline.

    Out of stock, 1-3 weeks

    $99.00

  • Last stock! Bluelab Guardian Monitor

    Bluelab Bluelab Guardian Monitor

    1 in stock In stock

    Adjustable brightness display. Large easy-to-read, plant-safe green LED displays. Selectable values for conductivity and temperature. Simple push button pH calibration system. No calibration required for conductivity and temperature. Silent alarm for both high and low settings. Settings retained when power lost (non-volatile memory). Temperature compensation. An international power supply. Water-resistant design. 2 year Bluelab Guarantee (6 months on probe).

    1 in stock In stock

    $459.00

  • Hanna General-Purpose Cleaning Solution - 230ml

    Hanna Instruments Hanna General-Purpose Cleaning Solution - 230ml

    Out of stock, 1-3 weeks

     HI7061M is a general purpose cleaning solution that can be used for a variety of applications. Electrodes can become dirty from use and will produce inaccurate results even as they read correctly in a pH buffer. Hanna's® cleaning solutions eliminate impurities and residues that are left on electrode surfaces when immersed in samples during measurement or when stored incorrectly. Hanna suggests cleaning the bulb and junction of your electrode on a regular basis to ensure that the probe is always clean and to prevent any clogging of the junction. 

    Out of stock, 1-3 weeks

    $26.99

  • AC Infinity Hydroponic Meter PRO Kit, All-in-One pH Pen, Interchangeable Probe

    AC Infinity AC Infinity Hydroponic Meter PRO Kit, All-in-One pH Pen, Interchangeable Probe

    Out of stock, 1-3 weeks

      Hydroponic pH reader for water quality assessment to help monitor and maintain proper solution levels. Measures acidity, alkalinity, EC, TDS, temp, and salinity of water for gardens, aquariums, pools, and more. Replaceable sensor probe with sensitive glass membrane delivers instant pH readings with pinpoint accuracy. IP-67 rated to be sealed from high-volume moisture, dust, and sand; can also withstand high levels of heat. Includes KCL, 4.00 & 7.00 solutions with 12.88 mS & 1413 µS solutions for lab-grade precision.

    Out of stock, 1-3 weeks

    $159.00

  • Chemboys Citric Acid - 1lb

    Chemboys Chemboys Citric Acid - 1lb

    Out of stock, 1-3 weeks

    Use Chemboys Citric Acid to help treat soil alkalinity. If your soil has high alkalinity for a particular plant, citric acid can be mixed in with the soil to help raise the soil's pH. In low doses, Chemboys Citric Acid can be a beneficial repellent of certain organisms and pests.Citric Acid lies below 4.0 on the pH scale, meaning that it is acidic and potentially corrosive. The optimal pH for plant growth is between 5.5 and 7.5

    Out of stock, 1-3 weeks

    $13.99


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