AELAB Laboratory pH/ORP/Ion Meter – Model 920/930/931

The AELAB 920, 930, and 931 Laboratory pH/ORP/Ion Meters offer high-precision measurements for pH, ORP, ion concentration, and temperature. Designed for professional laboratories, these meters feature multi-point calibration, automatic temperature compensation, and intuitive operation—delivering reliable, lab-grade results every time.

Modles : 920~930~931

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The 920, 930, and 931 Laboratory pH/ORP/Ion Meters are precise instruments for measuring pH, mV, ORP, ion concentration, and temperature. The 920 covers pH, mV, and temperature, while the 930 adds ion concentration, and the 931 focuses on ion concentration and mV. Features include 1 to 5-point calibration, Automatic Temperature Compensation, and 500 data set memory. With an Auto-Hold function, calibration reminders, and customizable settings, these meters offer reliable, accurate results for diverse laboratory applications.

Feature:

pH:

1 to 5 points push-button calibration with auto-buffer recognition.
Selectable pH buffer group (USA/NIST/DIN) or using the custom calibration solutions.

ORP:

1 point offset calibration allows adjusting the displayed value to a known standard.
Relative and absolute millivolt modes ensure the reliable ORP measurements.

ION:

2 to 5 points calibration, providing the 8 concentration points can be selected.
Selectable concentration units, including the ppm, mg/L and mV/L.

GENERAL:

Automatic Temperature Compensation provides accurate reading over the entire range.
Calibration Due Reminder prompts user to calibrate the meter regularly.
Stability indicator shows when a measurement is recognized as stable.
Auto-Hold feature senses and locks the measurement endpoint.
Setup menu allows setting the 10 parameters, including the number of calibration points, stability criteria, temperature unit, auto-power off, etc.
Reset feature automatically resumes all settings back to factory default options.
Expanded memory stores and recalls up to 500 data sets.

🔬 How It Works?

The AELAB pH/ORP/Ion Meters operate on electrochemical sensing principles using compatible electrodes. pH and ORP are measured via sensitive glass or platinum electrodes, while ion concentrations are detected using ion-selective electrodes (ISEs). Automatic temperature compensation ensures precision across varying sample conditions. Users can calibrate using standard or custom buffer solutions and record stable results with the Auto-Hold function. The built-in software supports configurable settings and data logging for seamless lab workflow integration.

💡 Advantages

✅ High Precision: ±0.002 pH accuracy ensures trustworthy results
✅ Flexible Calibration: Up to 5-point calibration with selectable standards
✅ Multifunctional: Supports pH, ORP, Ion, and temperature in one unit
✅ Auto Features: Temperature compensation, calibration reminders, and data hold
✅ Robust Memory: Stores 500 readings with USB output for efficient data management
✅ User-Friendly UI: Easy-to-navigate setup and reset options for lab versatility
✅ Custom Calibration & Units: Tailor readings to your needs—ppm, mg/L, mmol/L

🔍 Recommended Models by Use Case

Use Case	Recommended Model
Routine pH Testing (General Labs)	920
Ion Analysis in Research & QC	930
Dedicated Ion Concentration Measurement	931

🧪 Ideal For

🧫 Chemical Testing Labs
🧪 Pharmaceutical R&D
🧃 Food & Beverage Quality Control
🌾 Environmental Monitoring
🏫 University & Educational Laboratories
🧬 Biotechnology & Life Sciences

❓ FAQ – Lab-Focused

Q: How is calibration performed?
A: The meter supports 1 to 5-point push-button calibration with auto-buffer recognition and allows custom calibration solutions.

Q: Is this meter GMP compliant?
A: Yes, it offers traceable calibration, data logging, and USB output, making it suitable for GMP-compliant environments.

Q: What’s the warranty period?
A: All AELAB laboratory meters come with a 1-year warranty, covering manufacturing defects and technical faults.

Specifications :

Model		920	930	931
pH - Measuring Range	-2.000~20.000pH	•	•	—
pH - Accuracy	±0.002pH	•	•	—
pH - Calibration Points	1~5 points (USA, NIST, DIN or Custom)	•	•	—
mV - Measuring Range	±1999.9mV	•	•	—
mV - Accuracy	±0.2mV	•	•	—
mV - Calibration Points	1 point, only for relative mV mode	•	•	—
Ion - Measuring Range	0.001~19999ppm, mg/L, mmol/L (Depending on the range of ISE)	—	•	•
Ion - Accuracy	±0.5% F.S (Monovalent), ±1% F.S (Divalent)	—	•	•
Ion - Calibration Points	2~5 points (0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000ppm, mg/L, mol/L, mmol/L)	—	•	•
General - Temperature Compensation	0~100°C, 32~212°F, Manual or Automatic	•	•	•
General - Data Hold	Manual or Auto-Endpoint	•	•	•
General - Calibration Due Alarm	1 to 31 days or Off	•	•	•
General - Memory	Stores up to 500 data sets	•	•	•
General - Output	USB communication interface	•	•	•
General - Power Requirements	DC5V, using AC adapter, 220VAC/50Hz	•	•	•
General - Dimensions and Weight	210(L)×188(W)×60(H)mm, 1.5kg	•	•	•

Model		920	930	931
pH - Measuring Range	-2.000~20.000pH	•	•	—
pH - Accuracy	±0.002pH	•	•	—
pH - Calibration Points	1~5 points (USA, NIST, DIN or Custom)	•	•	—
mV - Measuring Range	±1999.9mV	•	•	—
mV - Accuracy	±0.2mV	•	•	—
mV - Calibration Points	1 point, only for relative mV mode	•	•	—
Ion - Measuring Range	0.001~19999ppm, mg/L, mmol/L (Depending on the range of ISE)	—	•	•
Ion - Accuracy	±0.5% F.S (Monovalent), ±1% F.S (Divalent)	—	•	•
Ion - Calibration Points	2~5 points (0.001, 0.01, 0.1, 1, 10, 100, 1000, 10000ppm, mg/L, mol/L, mmol/L)	—	•	•
General - Temperature Compensation	0~100°C, 32~212°F, Manual or Automatic	•	•	•
General - Data Hold	Manual or Auto-Endpoint	•	•	•
General - Calibration Due Alarm	1 to 31 days or Off	•	•	•
General - Memory	Stores up to 500 data sets	•	•	•
General - Output	USB communication interface	•	•	•
General - Power Requirements	DC5V, using AC adapter, 220VAC/50Hz	•	•	•
General - Dimensions and Weight	210(L)×188(W)×60(H)mm, 1.5kg	•	•	•