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pH Testing & Control - 183 - On Sale Now! Save up to 5%


On Sale! Up to 5% off on pH Testing & Control at Buy Online Guru. Top brands include Newdy, KETOTEK, General Hydroponics, Groline, Aromdeeshopping, pH Meters, NA, DLS, Z3Z, GuDoQi, Bluelab, Earth Juice, Botanicare, Hanna Instruments, XCSOURCE, TekcoPlus, & huanhuatiancheng. Hurry! Limited time offers. Offers valid only while supplies last.



Newdy Digital PH Meter Tester for Water Quality, Food, Aquarium, Pool & Hydroponics,0.01/High Accuracy +/- 0.2 and 0.00-14.00 Measurement Range, Battery Included -Blue
By Newdy
In Stock
$12.99

ean: 8011515680115,

4.8 out of 5 stars with 212 reviews
▼Water is consumed by the plants and animals we depend on, and we directly consume it every day. The pH level of water can provide information on potential contamination. ▼This pH meter is not only ideal for household or laboratory use, also suitable for testing pH balance of drinking water, pool, aquarium, food Project, RO system, Spa, or hydroponics. Great for kids school science experiments. Test different bottled waters or even your homemade sauerkraut ➤ Specifications ● Measure


KETOTEK Digital PH Meter, PH Meter with ATC, Water PH Test Meter with 0.00-14.00PH Measure Range for Drinking Water, Hydroponics, Aquariums, Swimming Pools. High Accuracy 0.01 PH Pen Tester
By KETOTEK
In Stock
$11.99

mpn: KT-3 Portable, ean: 0723260104560,

4.0 out of 5 stars with 165 reviews
Specification:Measure range: 0.00- 14.00PHResolution: 0.01PHAccuracy: 0.01 PHPower Supply: 2*1.5V (LR44 Button cell) (Included)Operating Temperature: 0°C - 60°CDimension: 155mm* 31mm * 18mmWeight: 50gCalibration tips:a. Dissolve PH buffer powder in 250ml of distilled water.b. Turn on PH meter and clean the electrode in distilled water, then immerse the electrode in the PH standard solution.c. Press '' CAL'' button, wait until the reading is the same as the PH value of buffer powder and


General Hydroponics pH Control Kit
By General Hydroponics
In Stock
$16.00

mpn: 722080, ean: 0730162234745,

4.8 out of 5 stars with 55 reviews
The pH Control Kit by General Hydroponics provides everything you need for testing the pH level of the nutrient solution in your hydroponic system. The pH balance is essential for stimulating vigorous plant growth. Vital elements in nutrient solution having pH that is too high (basic) or too low (acidic) cannot be properly absorbed by plants. Incorrect nutrient solution pH can cause slow growth, sickly plants and low yields. The kit contains pH UP (potassium hydroxide), pH DOWN (phosphoric


GroLine Electrode Storage Solution (500 mL)
By Groline
In Stock
$26.99

ean: 0800703000501,

4.2 out of 5 stars with 248 reviews
Add to Cart HI70300-050 is a GroLine storage solution prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH electrode hydrated. Ideally a storage solution should be used; never store an electrode in distilled or deionized water. The GroLine storage solution is specifically formulated to minimize microbial growth and to prevent any


Aromdeeshopping New Digital PH Meter Water Hydroponics Pool Test Pocket Pen Tester Aquarium Pond
By Aromdeeshopping
In Stock
$14.50

ean: 0794849091489,

4.3 out of 5 stars with 227 reviews
Description This item is PH meter for your everyday PH testing. It has a wide measuring range of 0-14 PH and 0.1 accuracy. It will measure and display readings simultaneously, very convenient to use. Pen style design and LCD display with backlight, easy to carry and read, very practical. It can be used in testing water, aquarium, make-up, industrial sewage, and etc. Features - Color: Yellow. - Material: Plastic. - Size: 15.2x3x2cm. - Accuracy: 0.1 - Working temperature: 0~50 Celsius degree -


Digital Ph Meter + TDS Tester Aquarium Pool Hydroponic Monitor Water 0-9999 PPM
By pH Meters
In Stock
$22.83

ean: 0730337086926,

4.6 out of 5 stars with 262 reviews
Specifications pH Calibration Buffer Powder for pH4.00, pH6.86 Powder buffer solution provide indefinite or long shelf life and stability, ideal for low volume use. Each pack makes 250mL of buffer solution. It's lightweight, inexpensive and takes up very little space. These buffers are accurate to within ±0.01pH units at 25°C and remain stable over long periods of time. Directions For Use Completely empty the powder into a clean 250mL glass beaker. Add 250mL of Deionized Water to the beaker.


Digital PH Meter Tester Pocket Portable Pool Water Aquarium Hydroponic Wine New
By NA
In Stock
$11.39

mpn: 4316276034,

4.6 out of 5 stars with 28 reviews
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DLS Soil Moisture Meter Indoor Outdoor Sunlight PH Acidity 3-in-1 Soil Tester Kit for Garden Farm Lawn Planter (No Battery Needed) Easy Read Indicator
By DLS
In Stock
$12.68

ean: 0783942919486,

4.4 out of 5 stars with 53 reviews
With DLS 3-in-1 Soil Meter, you can easily check on the condition of your plants. The moisture meter will quickly tell whether your plants is doing well. Firstly, let you know that dry and needs water or wet and could use a day to dry out, you will never over/under water your plants again. Secondly, it helps you to control PH level in soil, acidic or alkaline is suitable for your plants. Thirdly, testing whether plants getting adequate sunlight. Above all, equipped with this meter, you can give


New 3in1 Plant Flowers Hydroponic Soil Moisture PH Light Meter Tester
By Z3Z
In Stock
$18.98

ean: 8897785895844,

4.6 out of 5 stars with 67 reviews
Description: 100% brand new and high quality 3 in 1 multifunctional moisture, PH and light meter No battery required, simple and convenient to use Simply insert probe of the meter into the soil, switch to the setting you want to measure and read the scale Probe length:21cm Ideal tool for both indoor and garden plants care Please clean the electrode after each use Package includes: 3in1 Moisture PH Light meter*13 in 1 multifunctional moisture, PH and light meter. No battery required, simple and


GH pH Control Kit
By General Hydroponics
In Stock
$25.34

mpn: 722080, ean: 8927615884790,

4.2 out of 5 stars with 177 reviews
General Hydroponics® pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.GH pH Control Kit. Brand Name: General Hydroponics. PH/EC/TDS Meters and Solutions Parts & Systems for Hydroponics. Package Contains: 1 Units. USA & Canada Warehouses, Fast Shippings.


GuDoQi Digital Ph Meter Tester Digital Acidity Meter Backlight Ph Tester Best For Water Aquarium Pool Hot Tub Hydroponics Wine Resolution 0.01 Large Lcd Display (Yellow)
By GuDoQi
In Stock
$13.99

mpn: CE1325, ean: 0711531598620,

4.2 out of 5 stars with 168 reviews
Features: Full measurement range: PH 0-14, 0.05 PH range of error and 0.01 PH resolutions; quickly display readings in seconds Large and clear LCD display Compact and portable: Handheld pen-like design with a pen type clip which will keep it securely fastened to lab coats etc. a case is included for easy storage No calibration needed for new units, just remember to keep the probes neutral by cleaning with distilled water before and after use, and not touching them A little tool for home and


Bluelab pH Controller Power Supply
By Bluelab
In Stock
$33.37

ean: 9421024920937,

4.7 out of 5 stars with 20 reviews
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 back lit lcd with adjustable brightness and large, easy to read display. Easy to navigate menu to program, adjust settings and calibration by a simple push of a button. Flashing high/low alarm with control lockouts to protect from


Earth Juice Natural Down 1.6 lb
By Earth Juice
In Stock
$36.99

mpn: 722173, ean: 8927615884905,

4.7 out of 5 stars with 30 reviews
pH adjusting crystals that will, once and for all, eliminate the hassles and worries of spilling, splashing and dealing with harsh liquid pH adjusters. Use to adjust the pH of fertilizer and plant micronutrient foliar solutions.Earth Juice® Natural UP & Natural DOWN. Brand Name: Earth Juice. PH/EC/TDS Meters and Solutions Parts & Systems for Hydroponics. Package Contains: 1 Units. USA & Canada Warehouses, Fast Shippings.


Botanicare pH Down Quart
By Botanicare
In Stock
$28.99

mpn: 722190, ean: 8927615884950,

4.7 out of 5 stars with 29 reviews
With plants, nutrient availability can be affected by soil or solution pH. pH levels outside recommended ranges can lead to nutrient lockout and nutrient deficiencies resulting in stunted growth and poor appearance. Control pH levels, minimize problems and maximize your plants' full potential with Botanicare's pH Up and pH Down solutions. Botanicare's pH Up consists of a 29% concentrated Potassium Hydroxide solution that has an extremely low level of phytotoxicity and does not contain salts or


Hanna Instruments 716840 PHEP Tester (HI 98107)
By Hanna Instruments
In Stock
$55.69

mpn: 716840, ean: 0799441254751,

4.8 out of 5 stars with 86 reviews
The hi 98107 (phep), which is the result of over two decades of research & manufacturing experience, is the updated version of our widely popular 96107 (phep). today the redesigned phep series feature a rugged & ergonomically enhanced Casing that fits comfortably in your hand & a larger LCD which makes it easier to read at any Angle. With the latest innovation of a non-clogging Fiber junction the new phep meters last much longer. Simply pull out 1-2 mm (1/8 in) of the junction Fiber to


XCSOURCE Professional TDS EC Tester pH Meter Digital Temp PPM Check Water Quality Purity for Filter Pool Aquarium Hydroponic BI669
By XCSOURCE
In Stock
$17.19

mpn: BI669, ean: 4894479833773,

4.4 out of 5 stars with 141 reviews
Features: PH Meter: Ideal instrument for any aquarium, the fishing industry, swimming pools, school laboratories, food & beverage, etc. Excellent PH meter, very accurate and durable. Auto-off function: turns off meter after non-use in 5 minutes to save batteries. ATC function: it can automatically change the displayed value into the value of 25 C. Big LCD display screen which has great waterproof performance and let you easily read the testing value. TDS&EC Meter: The 3-in-1 Digital TDS Meter


General Hydroponics GH1514 General Hydroponics Ph Control Kit (Pack of 2)
By General Hydroponics
In Stock
$43.76

ean: 0793094246941,

4.4 out of 5 stars with 32 reviews
pH controls is essential for stimulating vigorous plant growth. The pH scale measures acidity or alkalinity on a scale of 0-14. Below 7.0 the pH is acidic. Above 7.0 , the pH is alkaline. 7.0 is nuetral. The best pH for general plant growth is in the range of 5.5 to 6.5, slightly acidic.Nutrient solution that is too high (basic) or too low (acidic) cannot be properly asbsorbed by plants. Incorrect nutrient solution pH can cause slow growth,sickly plants and low yields.Designed to work superbly


Digital pH Water Quality Meter Tester Monitor with Replaceable BNC Electrode Probe Adjustable Mounting Bracket for Aquarium Tank Waterproof
By TekcoPlus
In Stock
$38.90
$36.99
You Save: 5%

mpn: PHTK-26, ean: 0713072683902,

4.6 out of 5 stars with 32 reviews
An upgraded version of pH monitor that allows you to replace electrode once electrode is accidentally damaged and lets you mount the pH monitor to your tank or aquarium with the included adjustable mounting bracket. Features: Reliable and stable replaceable BNC Electrode with 1 Meter (3.28 feet) cable Adjustable Mounting Bracket with self-adhesive tape Built with Automatic Temperature Compensation (ATC) Easy to use with high accuracy Large LCD Display with 4 digits Pre-calibrated at


huanhuatiancheng Digital LCD PH Meter Aquarium Pool Water Wine Urine Tester Analyzer (yellow)
By huanhuatiancheng
In Stock
$23.59

mpn: 4336465319, ean: 0781903574767,

4.2 out of 5 stars with 33 reviews
Huanhuatiancheng Handheld Pen Type PH Meter This pH meter is affordable and useful for those who need a PH tester for household and laboratory use, it's not only ideal for household or laboratory use, also suitable for testing pH balance of drinking water,pool, aquarium,food Project, RO system, Spa, or hydroponics. Great for kids school science experiments. Test different bottled waters or even your homemade sauerkraut High Quality and Durable it's highly accurate for measuring range of 0-14


General Hydroponics GH1514 General Hydroponics Ph FxfgWS Control Kit (Pack of 2)
By General Hydroponics
In Stock
$37.77

ean: 0793094246729,

4.9 out of 5 stars with 217 reviews
The pH Control Kit by General Hydroponics provides everything you need for testing the pH level of the nutrient solution in your hydroponic system. pH control is essential for stimulating vigorous plant growth. Vital elements in nutrient solution having pH that is too high (basic) or too low (acidic) cannot be properly absorbed by plants. Incorrect nutrient solution pH can cause slow growth, sickly plants and low yields. The kit contains pH UP (potassium hydroxide), pH DOWN (phosphoric acid),



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