Welcome to GrowTime!

Collection:

pH, EC & TDS Meters

56 products
Show:
Regular price $12.99
Sale price $12.99
Regular price
Unit price
per 
The acid formulation uses food grade phosphoric acid to lower the pH to the proper level. Widely recognized as a consistent and reliable product.
Regular price $12.99
Sale price $12.99
Regular price
Unit price
per 
pH UP by General Hydroponics - 1 Quart - Raise pH of Water. pH Up by general hydroponics is a mild base solution that is perfect for raising the pH of water for gardening especially microgreens w...
Regular price $31.99
Sale price $31.99
Regular price
Unit price
per 
The acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. Widely recognized as a consistent and reliable product.
Regular price $44.99
Sale price $44.99
Regular price
Unit price
per 
HM Digital Handheld Digital pH Meter Model #: PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics, gardening, pools, spas, aquariums, reef ...
Sold Out
Regular price $19.99
Sale price $19.99
Regular price
Unit price
per 
To maximize plant growth, the pH content of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5. Users of General Hydropon...
Sold Out
Regular price $8.99
Sale price $8.99
Regular price
Unit price
per 
The General Hydroponics pH Test Indicator can help you maintain an ideal pH level (which is between 5.5 and 6.5). This can be achieved by monitoring your pH using the super concentrated drops found...
Regular price $29.99
Sale price $29.99
Regular price
Unit price
per 
Advanced Nutrients pH-Down 1L
Regular price $29.99
Sale price $29.99
Regular price
Unit price
per 
HI7007-050 is a high quality pH 7.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly...
Sold Out
Regular price $44.99
Sale price $44.99
Regular price
Unit price
per 
HI50036P is a quick calibration solution for use with Hanna's GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for  a single point calibration for pH ...
Sold Out
Regular price $11.99
Sale price $11.99
Regular price
Unit price
per 
HI5036-012 is a quick calibration solution for use with Hanna's GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration ...
Sold Out
Regular price $99.99
Sale price $99.99
Regular price
Unit price
per 
The HI98118 GroLine pocket pH Tester is an affordable way to measure the pH of hydroponic nutrient solutions. The maintaining of an optimal pH is essential to maximize optimum growth. The general r...
Regular price $19.99
Sale price $19.99
Regular price
Unit price
per 
It is formulated with R/O and UV sterilized water and combine two pH adjusters for buffered effectiveness. It contains three electrolytes to help maintain osmotic balance.
Regular price $49.99
Sale price $49.99
Regular price
Unit price
per 
The COM-80 is easily the most advanced economically priced, reliable EC/TDS meter on the market. With its versatility and durability, it is ideal for testing applications such as hydroponics &...
Sold Out
Regular price $11.99
Sale price $11.99
Regular price
Unit price
per 
Take control of your gardening success with the Hydrofarm 2-Way pH & Moisture Meter! Easily measure pH levels and moisture content to ensure optimal plant growth. No more guessing, just results...
Sold Out
Regular price $19.99
Sale price $19.99
Regular price
Unit price
per 
  HI77400P is a set of premium quality pH 4.01 and 7.01 calibration buffer solutions. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring fresh...
Sold Out
Regular price $32.99
Sale price $32.99
Regular price
Unit price
per 
Elevate your water testing accuracy with HM Digital pH 7.0 Buffer Solution! These convenient packets offer a precise pH level for your water, ensuring the best possible readings. Say goodbye to imp...
Sold Out
Regular price $28.99
Sale price $28.99
Regular price
Unit price
per 
The HM Digital Handheld TDS-3 Tester is a reliable and accurate tool for measuring total dissolved solids in water. With its compact design and quick results, it is perfect for professionals and ex...
Sold Out
Regular price $259.99
Sale price $259.99
Regular price
Unit price
per 
The HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conductivity (EC), TDS (ppm), and temperature. Simple, two-button meter operation and advanced features, inc...
Regular price $11.99
Sale price $11.99
Regular price
Unit price
per 
HI7004-012 is a high quality pH 4.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly...
Regular price $19.99
Sale price $19.99
Regular price
Unit price
per 
Advanced Nutrients pH Up is the most concentrated pH adjuster there is on the market. Perfect for larger reservoirs. DIRECTIONS: Use small amounts when adjusting the nutrient solution to affect the...
Sold Out
Regular price $13.99
Sale price $13.99
Regular price
Unit price
per 
Compact, reliable, and incredibly easy to use – the Luster Leaf Rapitest Mini Soil pH Tester 1815 is your go-to tool for quick soil testing.This pocket-sized pH meter delivers professional-grade ac...
Regular price $14.99
Sale price $14.99
Regular price
Unit price
per 
Take the guesswork out of soil health with the Luster Leaf Rapitest Soil pH Meter. Whether you're growing vegetables, flowers, or managing a hydroponic setup, soil pH is critical to nutrient availa...
Sold Out
Regular price $180.00
Sale price $180.00
Regular price
Unit price
per 
The HI1285-7 is a 3-in-1 pre-amplified multiparameter probe that measures pH, EC/TDS, and temperature within a single polypropylene body. The pH portion of this probe is constructed with a cloth ju...
Sold Out
Regular price $24.00
Sale price $24.00
Regular price
Unit price
per 
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...
Sold Out
Regular price $32.99
Sale price $32.99
Regular price
Unit price
per 
Boost your confidence in accurate pH testing with HM Digital pH 4.0 Buffer Solution. Each convenient packet is pre-measured for easy use and ensures precise results. Trust in this solution for reli...
Regular price $69.99
Sale price $69.99
Regular price
Unit price
per 
 The HI98115 is a GroLine pH tester with advanced features for the measurement of pH in hydroponic nutrient solutions. The HI98115 is a very simple meter to operate with all functions including tur...
Sold Out
Regular price $39.00
Sale price $39.00
Regular price
Unit price
per 
HI70300G is a high quality storage solution designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight de...
Regular price $11.99
Sale price $11.99
Regular price
Unit price
per 
HI7061-012 is the GroLine 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 th...
Regular price $38.99
Sale price $38.99
Regular price
Unit price
per 
HI70061G is a high quality cleaning solution designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweight design....
Regular price $12.99
Sale price $12.99
Regular price
Unit price
per 
General Hydroponics pH Test Indicator 8 oz
Regular price $96.99
Sale price $96.99
Regular price
Unit price
per 
Advanced Nutrients pH-Down 4L
Sold Out
Regular price $99.99
Sale price $99.99
Regular price
Unit price
per 
The HI98330 nutrient tester is designed to measure the conductivity of the nutrient solutions used in agriculture and hydroponic applications. Features at-a-glance: IP67 waterproof and floating de...
Regular price $129.99
Sale price $129.99
Regular price
Unit price
per 
The HI98331 Soil Test™ is a pocket tester specifically designed to directly measure soil conductivity (EC) and temperature. With a compact size, single button operation, and automatic calibration,...
Sold Out
Regular price $84.99
Sale price $84.99
Regular price
Unit price
per 
The GroLine Waterproof EC/TDS Tester is made specifically for hydroponics, provides a simple, inexpensive solution to measure fertilizer concentration in a nutrient solution. The HI98318 EC/TDS te...
Regular price $12.99
Sale price $12.99
Regular price
Unit price
per 
HI7010-012 is a high quality pH 10.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clear...
Regular price $41.00
Sale price $41.00
Regular price
Unit price
per 
The HI700663P is a highly effective cleaning solution that is specially formulated for pH electrodes used in agricultural applications. Electrodes can become dirty from use and will produce inaccur...
Regular price $46.00
Sale price $46.00
Regular price
Unit price
per 
HI70004G is a high quality pH 4.01 calibration buffer designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweigh...
Regular price $46.00
Sale price $46.00
Regular price
Unit price
per 
HI70007G is a high quality pH 7.01 calibration buffer designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a lightweigh...
Regular price $46.00
Sale price $46.00
Regular price
Unit price
per 
HI70031G is a high quality 1413 uS/cm conductivity standard designed with hydroponics, aquaponics, and greenhouses in mind. Single-use sachets are highly portable, with a small footprint and a ligh...
Regular price $46.00
Sale price $46.00
Regular price
Unit price
per 
Unlock the full potential of your water conductivity measurements with Hanna HI70039G GroLine 5000 uS/cm Conductivity Standard Sachets! These sachets contain the perfect amount of solution for accu...

Featured brands!