High Accuracy pH meter 5 point + ION Meter


Elevate lab precision with the Galaxy PH-500 PH/ION Meter Combo. Calibrate effortlessly, measure ION concentration, pH, ORP, and temperature with ease. Features like ATC, automatic endpoint stabilization, slope, and 0.001 resolution make it an invaluable tool.

SKU: PH-500 Category:


The Galaxy PH-500 PH/ION Meter Combo stands as your lab’s trusted ally for achieving unparalleled precision in analytical measurements. This high-accuracy instrument excels in measuring ION concentration, pH, ORP, and temperature, delivering dependable results with each analysis.

Equipped with advanced sensing technology, this meter offers accurate and reliable measurements in a compact and user-friendly design. Its key features include the 5-point auto calibration in pH mode, making calibration effortless with the push-button interface. You can select pH standard and temperature units that suit your specific requirements. The meter goes a step further by automatically calculating and displaying electrode slope, ensuring consistent accuracy.

In ION mode*, you can perform 2 to 5-point calibration across a range of concentrations, offering direct ION readout. The automatic Temperature Compensation (ATC) feature ensures high accuracy by accounting for temperature fluctuations, while the automatic endpoint function simplifies data collection by freezing the measured value for easy reading and recording.

Never miss a calibration, thanks to the calibration due reminder. The setup menu provides customization options, allowing you to adapt buffer standards, calibration points, stability conditions, resolution, measurement units, and even date and time settings. Additionally, the built-in real-time clock stamps stored data.

Included with the Galaxy PH-500 are essential accessories like a pH electrode, temperature probe, pH buffer, electrode stand, adapter, and an instruction manual. Simplify and elevate your lab’s analytical capabilities with the Galaxy PH-500 ION Meter Combo, a versatile and efficient tool designed to meet the demands of your precise measurements.

• During the pH mode, up to 5 point auto calibration with push-button
• Selectable pH Standard & Temp. units
• Automatically calculates & displays electrode slope
• In ION mode, 2 to 5 point calibration from low to high concentrations
• Direct ION readout
• Automatic Temperature Compensation(ATC) ensures high accuracy
• Automatic endpoint function freezes the measured value for easy reading and recording the data
• Calibration due reminder prompts to calibrate the meter regularly
• Setup menu lets user customize buffer standards, calibration points, stability conditions, resolution,
measurement units, date & time
• Reset function can resume all settings to factory default values
• Built-in real time clock stamps stored data to meet GLP standards

• pH Electrode
• Temp. Probe
• pH Buffer
• Electrode Stand
• Adapter
• Instruction Manual

*To test ION concentration you need to buy an ION selective electrode separately according to your requirements. This machine has a mode for ION concentration testing, but the relevant sensor must be bought separately.


Model PH-500
Make Galaxy
pH Range -2.000~20.000 pH
Resolution 0.001, 0.01, 0.1 pH, Selectable
Accuracy & Calibration Points ±0.002 pH & up to 5 points
pH buffer Option USA,(pH 1.68, 4.01, 7.00 , 10.01, 12.45)
NIST (pH 1.68/4.01/6.86/9.18/12.45)
DIN (pH 1.09, 4.65, 6.79, 9.23, 12.75) or user defined
ION Concentration Range 0.001~19999 ppm, mol/L (selectable depending on range of ISE)
ION Concentration Accuracy ±0.5% F.S (monovalent), ±1% F.S (divalent)
ION Resolution 0.001, 0.01, 0.1, 1
ION Calibration Points up to 5 points
ORP (mV) Range 0 ̴ ±1999.9 mV
ORP Calibration 1 point
ORP Resolution & Accuracy 0.1, 1mV Selectable & ±0.2 mV
ORP Measuring Mode Absolute mV or Relative mV
Temp. Range & Resolution ATC 0 ̴ 100 °C, /32 ̴ 212°F & 0.1 °C
Temp. Accuracy ± 0.5 °C, ±0.9 °F
Memory 500 data sets with date & time
Stability Condition Low or High, selectable
Calibration Reminder 1 to 31 days or OFF
Power Source DC 5V adapter, AC 220V
Dimensions & Weight 210 x 188 x 60 mm & 1.2kg


Catalog Analytical Balance 0.1mg MA-220XDownload PDF