• VIVOSUN pH & TDS Meter Combo, 0.05ph High Accuracy Pen Type pH Meter & +/- 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter

    Your 1# Choice to Know Water QualityThe VIVOSUN TDS EC PH Meter Set is a professional water quality test meter.PH Meter Specifications: Measure Range : 0.00 - 14.00 pHResolution : 0.01 pHAccuracy : 0.05 pHCalibration: Two Points Automatic Calibration ButtonPower Supply: 2 x 1.5V LR44 Button Battery (keep using more than 500 hours)Dimension:155mm*31mm*18mmWeight:50g3-in1 TDS EC Temperature Meter Specifications:Lock function - makes it easy to read and record, the instrument will lock the reading result.After the numerically result gets stable, press HOLD button then remove the meter out of te... [Read More]

    • ASIN: B06XKMH86J
    • UPC: 615435160962
    • ASIN: B06XKMH86J
    • Brand: VIVOSUN
    • Manufacturer: VIVOSUN

  • Bluelab BLU27100 Guardian Monitor for Plant Germination

    n just one glance it clearly conveys all 3 critical parameters for successful growth: pH, conductivity AND temperature.The Bluelab Guardian Monitor is a constant indicator of the desired levels of EC/ppm 700/TDS/CF, pH and temperature, enabling the grower to optimise these parameters as the crop progresses through each growing phase.The Bluelab Guardian Monitor is mains powered and is mounted to the wall or hung on a support and the probes simply placed into the reservoir.With the Bluelab Guardian Monitor monitoring your crops 24 hours a day and with the ability to set high and low alarms, a f... [Read More]

    • ASIN: B0081K32B0
    • UPC: 791090254892
    • ASIN: B0081K32B0
    • Brand: Bluelab
    • Manufacturer: Bluelab Corporation Limited - Import (NZ)

  • KETOTEK Water Quality Test Meter, PH Meter TDS Meter 2 in 1 Kit with 0-16.00 ph and 0-9990 ppm Measure Range for Hydroponics, Aquariums, Drinking Water, RO System, Fishpond and Swimming Pool

    TDS METERSpecifications:Measurement range: 0 - 9 999ppm (>999ppm Display×10)Accuracy: ±2%Power Supply: 2*1.5V ( LR44 Button cell) (Included)Operating Temperature: 32 - 122 °FDimension: 144mm*25mm*14mm / 5.57"×0.98"×0.55"Net Weight: 55g / 1.94ozFeatures:Automatic Temperature Compensation (ATC)One button (HOLD) lock the testing resultAutomatic shut-off after 10minutes with inactiveNon-Calibration required: TDS meter had been calibrated in producingPH METERSpecifications:Measure range: 0.00- 16.00PHResolution: 0.01PHAccuracy: ±0.01 PHPower Supply: 2*1.5V (LR44 Button cell) (Included)Opera... [Read More]

    • ASIN: B07RQSKH3C
    • ASIN: B07RQSKH3C
    • Brand: KETOTEK
    • Manufacturer: KETOTEK

  • Bluelab Combo Meter Plus - Handheld Digital Hydroponic Nutrient and pH Meter for Measuring pH Levels, Conductivity & Temperature in Soil & Plants - Accurate pH Measurements - Bonus Carry Case Included

    HELP YOUR PLANTS GROW - Fast, reliable and versatile: Combo Meter Plus means you will be able to measure more and build a better understanding of your complete growing system. The multimedia Leap pH probe can be used to measure nutrient solution and directly in the rootzone in a range of growing substrates including soil, rockwool, coco coir and peat. PLANT HEALTH IN THE PALM OF YOUR HAND - Manage, control & monitor your plant health & performance. The Bluelab Combo Meter Plus device will fit in the palm of your hand which will allow you to spot check wherever you are! The backlit, easy-to-rea... [Read More]

    • ASIN: B07FHLZR5K
    • ASIN: B07FHLZR5K
    • Brand: Bluelab
    • Manufacturer: Bluelab

  • KETOTEK Water Quality Test Meter, PH Meter TDS Meter 2 in 1 Kit with 0-16.00PH and 0-9990 ppm Measure Range for Hydroponics, Aquariums, Drinking Water

    TDS METERSpecifications:Measurement range: 0 - 9 999ppm (>999ppm Display×10)Accuracy: ±2%Power Supply: 2*1.5V ( LR44 Button cell) (Included)Operating Temperature: 32 - 122 °FDimension: 144mm*25mm*14mm / 5.57"×0.98"×0.55"Net Weight: 55g / 1.94ozFeatures:Automatic Temperature Compensation (ATC)One button (HOLD) lock the testing resultAutomatic shut-off after 10minutes with inactiveNon-Calibration required: TDS meter had been calibrated in producingPH METERSpecifications:Measure range: 0.00- 16.00PHResolution: 0.01PHAccuracy: ±0.01 PHPower Supply: 2*1.5V (LR44 Button cell) (Included)Opera... [Read More]

    • ASIN: B07JC9BSNR
    • ASIN: B07JC9BSNR
    • Brand: KETOTEK
    • Size: PH+TDS
    • Manufacturer: KETOTEK

  • Professional TDS ppm Conductivity Meter - Quick and Easy EC TDS and Temperature Test Pen | 0-9999 ppm with ± 2% Accuracy | Perfect 3-in-1 Tester For Ro Water Aquarium Hydroponics Coffee Pool etc.

    Health Metric Water Quality Tester: A Must For Any House Tool Kit! Do you think that your water filtration system needs replacement but you are not sure about it? Meet The Health Metric TDS-EC Meter, Designed To Answer Your Questions In The Most Accurate Way!This 3-in-1 water quality meter is designed to offer you readings with unmatched accuracy: TDS Meter: Measures Total Dissolved solids such as minerals, salinity, metals, cations or anions dissolved in water. EC Meter: Measures the electrical conductivity in a solution, with great applications on hydroponics, aquaculture and freshwater ... [Read More]

    • ASIN: B01FPG89CE
    • UPC: 646437729567
    • ASIN: B01FPG89CE
    • Brand: Health Metric
    • Manufacturer: Health Metric

  • Stanaway Professional TDS ppm Water Meter Hydroponics for Nutrients

    Pocket TDS ppm meter digital water tester ideal for use in monitoring EC/TDS in drinking water, water conditioning, reverse osmosis, cooling towers, wastewater, laboratories, agriculture, aquaculture and aquariums, hydroponics and the printing industry. How to use: 1, Remove the protective case and press ON/OFF button. 2, Immerse the TDS meter into the water. 3, Stirring the water tester and waiting the display stabilizes. 4, Wipe the meter with towel. 5, Press ON/OFF for 3 seconds and it will shut down. Specifications: Model: 2018 Updated Version Display Style: LCD Material:Plastic TD... [Read More]

    • ASIN: B07MVY5B9L
    • ASIN: B07MVY5B9L
    • Brand: Stanaway
    • Manufacturer: Stanaway

  • Baoblaze Professional TDS ppm Meter | Digital Test Pen Combines EC, TDS | 0-9999 ppm, Quick and Easy Testing For Hydroponics

    Description: - Reliable Tech: Automatically calibrated per temperature, 0 - 9990 ppm TDS Measurement Range with 1 ppm Resolution, +/- 2% Readout Accuracy - Data Hold Function: Holds measurement value when moving out of water for convenient reading and recording - Auto-off Function: Shuts off automatically after 10 minutes of non-use to conserve batteries - ATC and Temperature Function: ATC Function promises high accuracy and Temperature Function allows users to get to know the temperature of the the liquid - Portable Design: Lightweight, handheld design for portability and convenienceSpecifica... [Read More]

    • ASIN: B0793HSVDH
    • UPC: 753321392889
    • ASIN: B0793HSVDH
    • Brand: Baoblaze
    • Manufacturer: Baoblaze

  • DYTesa Digital TDS Meter and PH Meter,Water Quality Tester with Auto Calibration Button,TDS PH EC Temperature 4 in 1 Set,Ideal for Household Drinking Water,Hydroponic,Aquariums,etc

    Features: 1. Shows the TDS/PH value instantly after being immersed into liquid. 2. Hold Function: Freeze the measurement to view it out of the water. 3. Equipped with backlit LCD for easy reading.(TDS meter only) 4. Includes a protective carrying case with belt clip, easy to carry. 5. Application: Pure water production and drinking, tap water, well water, sea water, fish tank water, swimming pool water etc. PH Meter Specifications: Measuring Range: 0 to 14.0 pH Resolution: 0.01 pH Accuracy: +/-0.01 pH Use Environment: 0 to 60℃(32 to 140℉ ) Battery: 3 * 1.5V LR button cell Product Size: 6... [Read More]

    • ASIN: B07BQ29R5V
    • ASIN: B07BQ29R5V
    • Brand: DYTesa
    • Manufacturer: DYTesa

  • LCD Digital Desplay TDS EC Meter Pen,3 In1 Multi-Function Water Quality Measurement Tool TDS&EC Tester for Drinking Water Quality Monitoring Swimming Pools Spas Aquarium Hydroponics Water 0-9990ppm

    Description:TDS Tester, EC meter, Conductivity meter, Water measurement tool,Function 3 in 1, 0-5000ppm。Lock Function: easy to read and record the instrument will lock the reading;5 minutes auto-off feature, the battery will not run electricity; How to use ?1.pull out the cap2.click the button on/off,and insert the plub into the liquid.3.when the reading is steady,click the button "Hold",then,get the result4.after use,clear the plub.Instrument features:1. Lock Function: easy to read and record, the instrument will lock the readin.2. 5-minute auto shut off feature, battery won't run off.3.Mea... [Read More]

    • ASIN: B07QNNVCSG
    • UPC: 732083220791
    • ASIN: B07QNNVCSG
    • Brand: Barry Century
    • Manufacturer: Barry Century

  • GYTOO 3 in 1 TDS Pen, PPM Tester Meter - 0-5000 PPM - for Hydroponics, Aquariums, Drinking Water, RO System, Fishpond and Swimming Pool

    Product Name: 3 key tds test pen Measuring range: 0-9990ppm Temperature range: 0-50 ° C Battery: 1.5V × 2 Battery life: about 1000 hours How to use: Take the electrode cover off before use. Press the ON/OFF key, place the electrode into the solution to be tested; After the value is stable, press the HOLD button to take out and reading; After finished, press the ON/OFF key, wipe the electrode clean, and insert the electrode protection Cover; Package Content: 1 x TDS and EC Meter

    • ASIN: B07SV1NC94
    • ASIN: B07SV1NC94
    • Brand: GYTOO
    • Manufacturer: GYTOO

  • TDS Meter Digital Water Test Meter, TDS Temperature & Conductivity Meter 3 in 1, 0-9999 ppm, Hydroponics EC Meter, Digital Water Quality Testers for Drinking Water, ppm Meter for Hydroponics Aquarium

    CONCERNED ABOUT YOUR WATER QUALITY? Hofun TDS Water Quality Test Meter performs as a guard who helps monitor water quality to tell you whether the water meets standards of drinking, so that you have a clear mind of water status and take measures to guarantee water safety for your family. WHAT IS TDS AND WHY SHOULD YOU CARE? TDS = Total Dissolved Solids, which are the inorganic salts and organic matter in liquid. The lower the TDS level, the purer the water is. Conversely, higher TDS level indicates more particles dissolved in liquid. YOUR FIRST CHOICE: HOFUN TDS METER Hofun 3 in 1 TDS, Temp &... [Read More]

    • ASIN: B07QLZ6DT5
    • UPC: 680613789143
    • ASIN: B07QLZ6DT5
    • Brand: Hofun
    • Manufacturer: Hofun

  • TDS Water Quality Tester,AMZSTAR Portable High Accuracy Handheld TDS Water Quality Digital Tester Meter with 0-9990 ppm Measurement Range,TDS Digital Measurement(measured water)

    instructions: 1. Remove the cap from the pen and turn the switch on. 2. Dip the pen into the test solution but not more than 2cm. 3. Stir the pen in the solution, then stay stable and after 2-6 seconds the TDS value will display on the screen. Press the hold button to save the value and then look at it. 4. After using, dry the head the of the pen and put the cap back on. Please note: The body of the TDS pen should not be exposed to liquids, direct sunlight or high temperature. Avoid dropping it. Parameters 1.range: 0-9990ppm 2.accuracy: +/- 2%. 3.battery: 2*1.5v(button cell). 4.Opera... [Read More]

    • ASIN: B073B11VCZ
    • UPC: 761560204931
    • ASIN: B073B11VCZ
    • Brand: AMZSTAR
    • Manufacturer: AMZSTAR

  • HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy

    Product Description: A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. With the push of a button, the TDS-EZ can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million). The lower the TDS level, the purer the water, with 0 ppm being pure H2O. The TDS-EZ is great for checking your tap water quality, or knowing when to change a filter. (The meter does not test for biologi... [Read More]

    • ASIN: B002C0A7ZY
    • UPC: 712641079917
    • ASIN: B002C0A7ZY
    • Brand: HM Digital
    • Size: 0-9990 ppm. Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy
    • Manufacturer: HM Digital, Inc.

  • Bluelab Guardian Monitor CONNECT Version

    The Bluelab® Guardian Monitor Connect is not only a constant indicator of the desired levels of pH, conductivity and temperature of your nutrient solution, it also data logs these critical parameters to your computer for you. It does not stop there. You can access the data via the cloud from a remote mobile device or computer to check for extreme variances to ensure these critical parameters are hitting the mark for crop success. Just one Bluelab® Connect Stick is required to receive wireless data from one or more Guardian® Monitor connects.

    • ASIN: B00KCT15Q2
    • UPC: 798527631066
    • ASIN: B00KCT15Q2
    • Brand: Bluelab
    • Size: Unit Only
    • Manufacturer: iPower Distributor L&G

  • 1500 ppm Calibration Solution 8 oz

    General Hydroponics uses the highest quality electronic meter reference solutions; Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale; General Hydroponics technicians check each batch to ensure

    • UPC: 169846815
    • Model: GH1571
    • Color: White
    • Size: 8 oz8 fl oz

  • General Hydroponics MaxiBloom for Gardening, 2.2-Pound

    General Hydroponics MaxiBloom for Gardening,

    • UPC: 109333504

  • General Hydroponics PH 4.01 Calibration Solution for Gardening, 1-Quart

    General Hydroponics PH 4.01 Calibration Solution for Gardening, 1-Quart Product Overview General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using

    • UPC: 775311235

  • General Hydroponics Armor Si for Gardening, 6-Gallon

    Armor Si is suitable for all types of plants during all stages of growth. It can be used for plants growing in hydroponics, Coco Coir and all types of media. Use as a growth enhancer

    • UPC: 855277136
    • Size: 6 gal6

  • General Hydroponics CaliMagic for Gardening, 1-Quart [1 Quart]

    CALiMAGic is a concentrated blend of readily available Calcium and Magnesium. It is formulated to assist fast growing plants by preventing secondary nutrient deficiencies. CALiMAGic helps optimize plant nutrition and enhances plant growth and development

    • UPC: 191974250
    • Model: GH1772
    • Size: 11 qt

  • General Hydroponics Floralicious Plus for Gardening, 16-Ounce [1 Pint]

    Floralicious Plus is a vegan bio plant stimulator and nutrient additive. It is everything that is Floralicious except it has been formulated to be applied in both the vegetative and regenerative or the flowering stages

    • UPC: 189132793
    • Model: GH1388
    • Size: 11 Pint

  • General Hydroponics KoolBloom for Gardening, 4-Ounce

    Encourages abundant flowering; Facilitates ripening in annuals; Boosts production of essential oils and

    • UPC: 118691622
    • Model: GH1315
    • Size: 44-Ounce

  • Alaska Naturals pH Up Alkaline Enhancing Crystals For Use With Hydroponic Systems 0-0-47; 2.0 lb

    Alaska Naturals pH Up naturally raises the pH with alkaline enhancing crystals. It is for use with hydroponic systems and can be used with all fertilizers. Maintaining correct pH balance in your hydroponic system is

    • UPC: 848096908
    • Model: 100530458

  • General Hydroponics Flora Blend for Gardening, 2.5-Gallon

    Flora Blend is a compost tea that is fermented from a proprietary blend of plant materials, plus seaweed, rock powders and micronized leonardite; Flora Blend is a vegan product and contains no animal derived ingredients;

    • UPC: 188467642
    • Model: GH1594
    • Size: 2.52.5 Gallon

  • General Hydroponics Flora Nectar Fruit and Fusion for Gardening, 1-Gallon [1 Gallon]

    Flora Nectar contains all natural raw cane sugar, molasses, malt syrup, select plant based esters, L-amino acids, organic acids, vitamins and essential minerals. This unique blend of ingredients helps your plants regulate enzymes that trigger

    • UPC: 186950396
    • Model: GH1603
    • Color: White
    • Size: 1 gal1

  • CANNABIS NUTRIENTS CALCULATING THE CORRECT AMOUNT - BUY THE GROW BOOK AND EQUIPMENT GUIDE

    Parts Per Million (PPM) For Cannabis Plants!

    MIXING CANNABIS NUTRIENTS - THE PERFECT PPM CALCULATOR FOR ANY LIGHT AND PLANT COUNT - GROW BOSS