• Measures four different levels for fertilizer, light, moisture and p...
The Complete pH Testing and Adjusting Kit comes with a pH Test Kit, Cr...
pH test strips are easy to use... simply dip and match the color to th...
Control Wizard Products is now introducing its Accurate pH & moisture ...
A crystallized pH adjuster for the professional and hobbyist. Use Natu...
Drops are reliable and simple to use. Fill the test tubeabout halfway ...
Professional pH and Moisture Meter with 12" probe. Operation is simple...
Reliable and simple to use.Fill the test-tube halfway with nutrient, a...
A crystallized pH adjuster for the professional and hobbyist. Use Natu...
Model 1815 • Economical, Easy to Use, Probe & Read • No Mixing, No Mea...
A crystallized pH adjuster for the professional and hobbyist. Use Natu...
At the cost of just a few rolls of litmus paper, you can have the indu...
Model 1840 • Instantly tells you how acid or alkaline soil is • Check ...
A crystallized pH adjuster for the professional and hobbyist Use Eart...
Ideal for all pH testing, water purification applications, wastewater ...
Kit includes: • Color comparator• 10 pH test capsules• Complete instru...
In store pickup only! An important part of growing healthy plants...
• Automatic temperature compensation• Waterproof, dust proof housing t...
Kit includes: • 4 color color comparators • 40 test capsules, 10 each ...
In store pickup only! An important part of growing healthy plants...
No Calibration! Water proof! Auto On/Off! Reads EC, CF and PPM on one ...
In store pickup only! An important part of growing healthy plants...
With a conductivity range right up to 6.0EC (60CF or 4200ppm), it will...
The Bluelab® pH Meter is used to accurately measure the pH value of a ...
In store pickup only! An important part of growing healthy plants...
• Light weight and portable• Measures pH, Nutrient and Temperature• Th...
pH Cleaning & Calibration Kit:• Full Color Laminated Instructions• Cal...
If you need to measure the pH level of soil, media or substrates, then...
In just one glance it measures all three critical parameters for succe...
General Hydroponics™ uses the highest quality reference solutions, all...
Bluelab® replacement pH probe for meters.
General Hydroponics™ uses the highest quality reference solutions, all...
Bluelab® replacement soil pH probe for meters.
General Hydroponics™ uses the highest quality reference solutions, all...
A Contact Ring helps the Bluelab pH Truncheon maintain its waterproof ...
General Hydroponics™ uses the highest quality reference solutions, all...
• Full color laminated instructions• Conductivity standard solution• D...
Hanna™ buffer solutions are prepared according to precise formulas and...
Features:Highly efficient and accurate due to its advanced microproces...
pH 7.01 is the most widely used among all buffer solutions. For this r...
For use with Hanna™ Dist 1 TDS meters (HI98301). The 1413 mS/cm...
HI 98129 is a waterproof tester that offers high accuracy pH, EC/TDS a...
Ideal for all water quality testing, water purification applications, ...
Hanna™ buffer solutions are prepared according to precise formulas and...
For use with Hanna™ Dist 1 TDS meters (HI98301). TDS solution are pro...
New "cloth junction" means that maintenance is no longer a problem! No...
pH 7.01 is the most widely used among all buffer solutions. For this r...
The original DiST (Dissolved Solids Tester) was first introduced in 19...
General Hydroponics™ uses the highest quality reference solutions, all...
The Primo TDS tester provides a fast and dependable way to measure the...
Ideal for all water purification applications, wastewater regulation, ...
For use with Hanna™ GroCheck TDS (HI983301), GroCheck Combo (HI981404N...
For Use with HI9813 Gro Check Meter. This solution cleans and calibra...
The Hanna™ DiST 1 comes with a large, easy-to-read display, a battery ...
Clean the liquid junction of your electrodes once a day or at least on...
Features dual level display showing pH/ temperature and percent remain...
• Low cost continuous indicator. • Supplied complete with a double jun...
TDS solution are produced with high-quality potassium chloride in vari...
The GroChek TDS Meter • Continuous reading TDS meter with a remote lab...
• Two parameters with a single instrument• Advanced electrod...
This handheld unit Features one probe for pH, EC and TDS. It also Fea...
HI 9811-5 and HI 9812-5 are pH/EC/TDS waterproof meters designed for s...
The 24-7 Nutrient Meter from Control Wizard Products is a great all ar...
Hanna™ Replacement pH Electrode (for HI98127, HI98129)...
Replacement PPM probe for the Sunlight Supply 24-7 Nutrient Meter....
Replacement pH probe for pH GroCheck units.
Replacement pH probe for the Sunlight Supply 24-7 Nutrient Meter....
For use with Oakton waterproof pH testers (pH1 and pH2) with microproc...
For use with pH and EC/TDS portable pens such as Hanna™ pH Champs, Dis...
Water quality test for the rapid detection of Coliforms in water. Fast...
Shockproof rubber boot for portable meters with HI 991001 casing.This ...
Shockproof rubber boot for portable meters with HI 991001 casing.This ...