Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)
Backed by Apera quality pH sensor with low impedance, ensuring a high response rate
Comes in a rugged carrying case with pH 4&7 buffers and a lanyard
Auto-recognition of stable values improves consistency, so you don't have to guess when to manually hold the measurement
Up to 2000 hours continuous operation, powered by AAA batteries

$152.59

Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration, Double Junction Probe for Improved Accuracy and Durability

Measures pH in solution for acid or alkaline conditions to make precise up and down adjustments with lab-quality glass probe used for the pool, drinking water, hydroponics, brewing, and growing
EASY two-point calibration and auto temperature compensation makes this digital meter a handy tool with a backlit LCD display and calibration reminders
Double junction probe improves accuracy, reliability, and probe lifespan compared to regular probes, more accurate than comparable pens, test strips, and other testing methods
Other features: auto-off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, lanyard, and calibration solution
Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 1 Year Limited Warranty with proof of purchase

$199.11

Monitor your garden for optimal results
Ensure accuracy with our high-quality equipment
Best brands covered by the manufacturer’s warranty
Another great item from Flora Hydroponics
The instrument is only as accurate as the probe is clean. Probe cleaning is one of the most important parts of owning or operating any Bluelab meter, monitor, or controller. The probe surface is where the instrument takes the reading of the solution or soil/media. If the probe face is dirty or contaminated, then the reading will be inaccurate. Accurate readings simplify crop management and provide improved growth.

$420.00

Measures pH in media for acid or alkaline conditions to make precise up and down adjustments with lab-quality probes used for the pool, drinking water, hydroponics, brewing, and growing in rockwool, soil, etc.
Easy two-point calibration makes this digital meter a handy tool with a backlit LCD display and calibration reminders
Monitor for your ph level to maximize your grow and ensure plants get the balanced feed they need
Other features: auto-off function, low battery indicator; KIT INCLUDES: AAA batteries and calibration solution; Includes Bluelab Leap pH Probe for direct media measurements
Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 5 Year Limited Warranty with proof of purchase (6-month warranty for probe)