pH and Humidity Meters

Stop guessing at critical environmental thresholds and chemical balances. Laboratory-grade precision engineered for small and large-scale industrial environments. Instant, actionable data ensures strict quality control and continuous process integrity. Rugged, water-resistant, and built for relentless accuracy in harsh environments.

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NODE® Wi-Fi Temperature and Temperature/Humidity Monitor

NODE® Wi-Fi Temperature and Temperature/Humidity Monitor

Wi-Fi temp monitor with alerts. App and Cloud. 24/7 protection.

Model: Ambient
Color: White
$115.00
RH SPOT® - Temperature and Humidity

RH SPOT® - Temperature and Humidity

Measure both Humidity & Temperature in any SPOT.

Color: White
$39.00
HygroBug™ Temperature & Humidity Meter

HygroBug™ Temperature & Humidity Meter

Temperature/humidity readings in a pocket-sized package.

Color: White
$49.00
Thermo-Hygrometer (RT817E)

Thermo-Hygrometer (RT817E)

Large display to monitor temperature & humidity.

$45.00
High Accuracy pH Meter w/ Replaceable Electrode (8689)

High Accuracy pH Meter w/ Replaceable Electrode (8689)

Does what the expensive models do at an affordable price.

$99.00
Splash-proof pH Meter, ±0.3pH accuracy (8680)

Splash-proof pH Meter, ±0.3pH accuracy (8680)

Compact, low-cost pH meter. Accurate to ±0.3pH.

$49.00
Splash-proof pH Meter, ±0.2pH accuracy (8681)

Splash-proof pH Meter, ±0.2pH accuracy (8681)

Dual temp/pH display. Auto-temp compensation. C/F switchable.

$59.00
Splash-proof pH Meter, ±0.05pH accuracy (8682)

Splash-proof pH Meter, ±0.05pH accuracy (8682)

High accuracy. Dual temp/pH display. Auto-temp compensation. C/F switchable.

$79.00
ThermaData® WiFi Temperature and Humidity Logger

ThermaData® WiFi Temperature and Humidity Logger

Wi-Fi enabled data logger. Connects to ThermoWorks Cloud.

$305.00
Precision pH Meter (8000)

Precision pH Meter (8000)

High accuracy ±0.05pH. Glass replaceable electrode.

$149.00
Precision pH Meter and Probe Kit (8100)

Precision pH Meter and Probe Kit (8100)

±0.05pH accuracy. Measures temp & pH. Removable probes.

$214.00
8100 Plus Kit

8100 Plus Kit

±0.02pH accuracy. Measures temp & pH. Removable probes.

$299.00
Handheld Therma-Hygrometer w/Dual Display (6002)

Handheld Therma-Hygrometer w/Dual Display (6002)

Humidity on the go. 10,000-hour battery life. ±2% RH

$134.00
Therma-Hygrometer w/Dual Display and External Probe (6102)

Therma-Hygrometer w/Dual Display and External Probe (6102)

Removable Temp/RH Probe. 10,000-hr battery. ±3% RH.

$184.00
Handheld Therma-Hygrometer (6500)

Handheld Therma-Hygrometer (6500)

Fixed Temp/RH Probe. 10,000-hr battery. ±3% RH.

$119.00
pH Calibration Buffers

pH Calibration Buffers

NIST-certified. Calibrate your pH Meter accurately.

Solution: 10.00 Buffer
$29.00

Accessories

pH Calibration Buffers

pH Calibration Buffers

Solution: 10.00 Buffer
$29.00
Replacement Electrode for 8689

Replacement Electrode for 8689

$45.00
General Purpose Electrode, 8000 Series (THS-823-501)

General Purpose Electrode, 8000 Series (THS-823-501)

$64.00
Spear-shaped Electrode, 1/4-inch Dia., 8000 Series (THS-823-503)

Spear-shaped Electrode, 1/4-inch Dia., 8000 Series (THS-823-503)

$133.00
Spear-shaped Electrode, 1/2-inch Dia., 8000 Series (THS-823-502)

Spear-shaped Electrode, 1/2-inch Dia., 8000 Series (THS-823-502)

$133.00
Replacement Temp/Humidity Probe for 6102

Replacement Temp/Humidity Probe for 6102

$89.00
Temperature Probe for 8100 pH Meter

Temperature Probe for 8100 pH Meter

$49.00
Knife Probe Electrode, 8000 Series (THS-823-514)

Knife Probe Electrode, 8000 Series (THS-823-514)

$349.00

Frequently Asked Questions

Never store long term in distilled or deionized water. Use an electrode storage.

Calibrate daily for professional use or before every critical measurement session. Sensors drift, calibration anchors your data.

Probes will eventually deteriorate. Proper storage and cleaning will extend their lives. Expect 12-24 months with proper maintenance. Sluggish readings or difficulty during calibration may signal that it's time to consider a replacement.

Absolutely. Relative Humidity (RH) is temperature-dependent. For the most accurate data, always allow the instrument to reach thermal equilibrium with the environment.