PH Testing

40 products

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

    Bluelab Bluelab Leap pH Probe (Probe Only)

    In stock

    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.

    In stock

    $145.00 $130.50

  • Luster Leaf Mini Soil pH Tester

    Luster Leaf Luster Leaf Mini Soil pH Tester

    In stock

    Luster Leaf Mini Soil pH Tester

    In stock

    $11.99

  • Sale -10% HM Digital PH-200 Waterproof pH Meter

    HM Digital HM Digital PH-200 Waterproof pH Meter

    In stock

    Measures pH and temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in a clear cap. Measurement range: 0-14 pH with a waterproof housing. Digital automatic calibration (one point), with digital fine tuning. Auto-off, data-hold functions and low battery indicator. Display: large and easy-to-read LCD screen includes simultaneous temperature reading. Factory calibrated with three-point calibration to 4, 7 and 10 pH. The meter can be recalibrated with digital calibration using the push buttons, no screwdriver needed. Includes a cap, batteries, lanyard and pH 7.0 buffer.

    In stock

    $99.95 $89.96

  • Milwaukee Waterproof pH Tester PH54

    Milwaukee Instruments Milwaukee Waterproof pH Tester PH54

    In stock

    The Milwaukee pH54 is a waterproof pH tester with a replaceable probe, for hydroponics, horticulture, aquariums and similar uses. It reads 0.00 to 14.00 pH at 0.01 resolution on a large LCD and is waterproof to IP65.Specifications Range: 0.00 to 14.00 pH Resolution: 0.01 pH; accuracy: ±0.1 pH Calibration: manual, 1 or 2 points Probe: replaceable gel-filled, double junction pH electrode (MA73600) Waterproof: IP65 Batteries: 3 x 1.5 V LR44 (A76), included; about 1500 hours of continuous use Size and weight: 7.9 x 1.5 in (diameter); 3.5 oz Good to know Store the probe in Milwaukee MA9015 storage solution. For acid-side calibration, cleaning and storage, Milwaukee points to its PH-START solutions. Add MA9010 (10.01 buffer) or M10010B if you need to calibrate on the basic side.

    In stock

    $50.99

  • Luster Leaf® Rapitest® Soil Test Kit - 40ct - Tests Included : (10) pH, (10) Nitrogen, (10) Phosphorus & (10) Potash

    Luster Leaf Luster Leaf® Rapitest® Soil Test Kit - 40ct - Tests Included : (10) pH, (10) Nitrogen, (10) Phosphorus & (10) Potash

    In stock

     Determining whether your soil pH needs adjusting or if Nitrogen, phosphorus, and potash should be added in the form of fertilizers. Easy to use, just mix soil and water together, pour off solution into comparator, pour in the powder from the capsule, shake and compare to color chart. 

    In stock

    $23.39

  • Sale -8% Bluelab® OnePen - With replaceable pH, Conductivity (EC) & Temperature Probe

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

    In stock

     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 

    In stock

    $249.00 $229.00

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

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

    In stock

     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. 

    In stock

    $8.59

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

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

    In stock

      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.

    In stock

    $69.99

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

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

    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.

    In stock

    $23.00

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

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

    In stock

      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.

    In stock

    $18.99

  • Advanced Nutrients ph up - 1L

    Advanced Nutrients Advanced Nutrients ph up - 1L

    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.

    In stock

    $34.36

  • Milwaukee pH600AQ Digital pH Pen Milwaukee pH600AQ Digital pH Pen

    Milwaukee Instruments Milwaukee pH600AQ Digital pH Pen

    In stock

    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

    In stock

    $35.00

  • Bluelab Probe Care pH & Conductivity Kit

    Bluelab Bluelab Probe Care pH & Conductivity Kit

    In stock

    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.

    In stock

    $35.00

  • Bluelab pH Pen

    Bluelab Bluelab pH Pen

    In stock

    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.

    In stock

    $99.00

  • Bluelab Guardian Monitor

    Bluelab Bluelab Guardian Monitor

    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).

    In stock

    $459.00

  • Bluelab® Combo Meter pH Replacement Probe - Guardian

    Bluelab Bluelab® Combo Meter pH Replacement Probe - Guardian

    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).

    In stock

    $90.00

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