PH Testing

35 products

  • Bluelab® OnePen - With replaceable pH, Conductivity (EC) & Temperature Probe

    Bluelab Bluelab® OnePen - With replaceable pH, Conductivity (EC) & Temperature Probe

    Out of stock, 1-3 weeks

     Bluelab OnePen one click data capture record, store, categorize and share your measurements in on easy to use app. Unlock the full potential of data with the OnePen. Superior Durability and easy maintenance double-junction pH probe, titanium electrodes, and an IP68 dust and waterproof rating deliver durability, while the replaceable probe and heath indicator simplify maintenance for long lasting performance 

    Out of stock, 1-3 weeks

    $249.00

  • Luster Leaf® Rapitest® pH Soil Tester - Contains 10 pH Tests

    Luster Leaf Luster Leaf® Rapitest® pH Soil Tester - Contains 10 pH Tests

    Out of stock, 1-3 weeks

     Ideal test to determine soil acidity/alkalinity. Particularly valuable for adjusting soil conditions for Better-Growing lawns, shrubs, evergreens, and plants. Just mix soil and water, pour off solution into comparator, add tablet, shake, and compare to color chart. It's just that easy. 

    Out of stock, 1-3 weeks

    $8.59

  • AC Infinity pH Meter Kit, pH Pen Tester for Water

    AC Infinity AC Infinity pH Meter Kit, pH Pen Tester for Water

    Out of stock, 1-3 weeks

      A pH reader for water quality assessment designed to help monitor and maintain proper pH levels. Measures the acidity, alkalinity, and temperature of water for gardens, aquariums, pools, and more. Sensor probe with sensitive glass membrane delivers instant pH readings with high accuracy. IP-67 rated to be sealed from high-volume moisture, dust, and sand; can also withstand high levels of heat. Lab-grade pH monitor testing kit includes ready-to-use 4.00 & 7.00 solutions for long-lasting precision. PRODUCT DESCRIPTION A digital water quality meter designed to measure water’s acidity, alkalinity, and temperature to help optimize its quality for gardening and water treatment applications. The highly responsive sensor probe utilizes a lithium glass membrane to instantly determine pH readings with highly precise ±0.1 accuracy. This pH pen tester for water features an IP-67 rating, specially sealed to withstand moisture and heat, as well as block out intrusive dust and sand. For further protection, the hydroponic pH meter is built with a sensor shield to safeguard your probe in between uses. The included 4.00 pH and 7.00 pH calibration solutions ensure consistently accurate measurements, the former also supporting proper storage conditions to help extend the lifespan of the pH and PPM meter. APPLICATIONS This fast-acting nutrient test alkalinity meter will help you determine how well your water uptakes nutrients. Fit for use as a pH meter for plants in horticultural settings like gardens, grow tents, greenhouses, and hydroponics systems. In addition, its application spans far beyond plant growing, capable of being a general pH level tester for water used in swimming pools, spas, aquarium fish tanks, and beverage homebrewing applications to help determine water safety.

    Out of stock, 1-3 weeks

    $59.99

  • Milwaukee MA9020 ORP 200-275 mV Solution - 230ml

    Milwaukee Milwaukee MA9020 ORP 200-275 mV Solution - 230ml

    14 in stock In stock

      MA9020 is a lab grade ORP 200-275 mV solution certified to meet the range. MA9020 is used to check the health and acuracy of an ORP electrode. Milwaukee solutions are designed to help you achieve reliable and repeatable ORP measurements. DESIGN FEATURES OPR 200-275 mV solution value (230 mL). Fundamental for the correct use of ORP electrodes and for obtaining the most accurate and reproducible readings. Sealed against light with air tight, tamper proof cap. Ideal for fast accuracy check. Simply open, pour into a beaker or container and insert the tester or electrode to start the ORP mV check process.

    14 in stock In stock

    $19.25

  • Apera pH Calibration Kit (pH 4/7, 8oz. ea)

    Apera Instruments Apera pH Calibration Kit (pH 4/7, 8oz. ea)

    Out of stock, 1-3 weeks

      Product Details GroStar by Apera pH calibration kit (pH 4/7, 8 oz. each)Kit includes: (1) 8 oz. pH 4.0 calibration solution(1) 8 oz. pH 7.0 calibration solution  pH measuring equipment must be cleaned and calibrated regularly to ensure accurate readings. High accuracy (0. 01 pH): standardized against NIST Certified pH references within 0. 01 pH at 25˚C (77˚F). ideal for the calibration of all pH meters Color-coded, double-sealed, 1-year shelf life Expiration date and temperature/ph reference chart provided for reference Non-hazardous product Calibration Solution should be stored in a cool place out of direct sun and heat.

    Out of stock, 1-3 weeks

    $18.99

  • Sale -10% Advanced Nutrients ph up - 1L

    Advanced Nutrients Advanced Nutrients ph up - 1L

    3 in stock In stock

    Say goodbye to nutrient lockout and hello to heavier harvests. Our scientists engineered pH-Up with potassium hydroxide and pH-Down with Phosphoric Acid, so you can easily achieve the ideal pH levels for optimal nutrient absorption. We’ve developed these highly stable buffers to give you precise control over your pH, even after dilution or adjustments between reservoir changes. Recalibrate pH levels with maximum buffers Highly concentrated formulas for longer use Nutrient Solutions: Mix a new réservoir weekly. Coco: Daily. Other Substrates: 2-4 times/week as necessary.Use small amounts when adjusting the nutrient solution to affect the pH level, as required. Use to maintain the optimum pH level of 5.5 to 5.8 for hydroponics and 6.2 to 6.3 for sphagnum moss and plants in containers. For best results, check the pH level daily.pH-Up & pH-Down is specially designed for use with diverse hydroponic growing media and all continuous liquid-feed growing systems such as aeroponics, drip irrigation and emitters, NFT, flood and drain, and deep water culture. NOTE: At Advanced Nutrients, we do not use paclobutrazol, daminozide, or any other banned plant growth regulators in our products.

    3 in stock In stock

    $31.36 $28.22

  • Milwaukee pH600AQ Digital pH Pen Milwaukee pH600AQ Digital pH Pen

    Milwaukee Milwaukee pH600AQ Digital pH Pen

    Out of stock, 1-3 weeks

    The Milwaukee pH600AQ compact pen tester is specifically designed to help maintain aquariums and aquaculture. Keeping the proper pH improves results for aquarium fish and quality in a range of fish raised in aqulculture.Use digital accuracy to keep pH in your target range for better results.WHAT PEOPLE ARE SAYING"Accurate results and calibrated right out of the box.""Must have for any aquarium owner.""Good value. Easy to use. Consistent."DESIGN FEATURESFast, accurate results with digital LCD readoutEasy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilizeSimple one-point calibration with an easy-to-use trimmer located on the back of the pH tester to protect from accidental splashesCap to protect the pH sensor and keep it wet when stored uprightLow power demand for extended battery life (batteries included)USE AND CAREAll pH sensors have a limited life and response time gets longer with age. Properly maintaining your pH pen tester will give you fast, accurate results for longer. So, be sure to order the Milwaukee pH Maitenance Kit code PH-Main at checkout time!  This will be needed to help clean and condition the pH electrode before use!Here are our top four tips. 1. Always store upright with the cap full of buffer or storage solution MA9015 not water.2. Clean your pH Pen Tester regularly by soaking in cleaning solution MA9016.3. Calibrate after cleaning and/or storage before testing to adjust for changes in the pH sensor.4. Gently stir the Pen in the sample for a faster result. Thank you for considering Milwaukee to help you take your results to the next level.SPECIFICATIONSpH range: 0.0 to 14.0 pHResolution: 0.1 pHAccuracy: +/- 0.1 pHTypical EMC Deviation: +/- 0.2 pHCalibration: Manual, 1 PointEnvironment: 32 F to 122 F, 95% RHApproximate dimensions: 6 x 1.2 x 0.95 inchesWeight: 3 ounceBattery Life: 700 hoursWarranty: 1 year

    Out of stock, 1-3 weeks

    $35.00

  • Bluelab Probe Care pH & Conductivity Kit

    Bluelab Bluelab Probe Care pH & Conductivity Kit

    Out of stock, 1-3 weeks

    Everything you need to clean, hydrate and calibrate pH probes as well as clean and test conductivity (ppm/EC) probes. The instrument is only as accurate as the probe is clean. Accurate readings simplify crop management and provide improved growth. Includes instructions, 20 ml single-use Bluelab Solution Sachets, 2 each of: pH 7.0 & pH 4.0, KCl, 2.77 EC, 3x plastic cups, pH Probe Cleaner, Conductivity Probe Cleaner, Toothbrush and Chamois.

    Out of stock, 1-3 weeks

    $35.00

  • 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

  • Bluelab® Combo Meter pH Replacement Probe - Guardian

    Bluelab Bluelab® Combo Meter pH Replacement Probe - Guardian

    Out of stock, 1-3 weeks

    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).

    Out of stock, 1-3 weeks

    $90.00

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