Benchtop Water Quality Meter PH-900 Biobase

Benchtop Water Quality Meter PH-900 Biobase

The PH-900 Benchtop Water Quality Meter by Biobase is a high-precision multiparameter instrument designed for laboratory water analysis. With a 6.5-inch backlit LCD display, it provides real-time, clear measurement data for pH, ORP, ion concentration, conductivity, TDS, salinity, resistivity, and dissolved oxygen. Equipped with advanced calibration options, electrode diagnosis, and USB connectivity, this benchtop system is suitable for research, industrial, and environmental monitoring applications.

Features

pH Measurement

1. 6.5-inch backlit LCD screen with multi-parameter display.

2. 1 to 5-point calibration with automatic buffer recognition (USA, NIST, DIN).

3. Automatic electrode diagnosis showing slope and offset.

ORP Measurement

1. 1-point offset calibration to adjust displayed value to a standard.

2. Relative and absolute millivolt modes for reliable ORP analysis.

Ion Concentration

1. 2 to 5-point calibration with 8 selectable concentration points.

2. Direct ion concentration readout for simplified testing.

3. Automatic electrode diagnosis for calibration points and slopes.

4. Selectable concentration units (ppm, mg/L, mol/L, mmol/L) with ionic valency input.

Conductivity/TDS/Salinity/Resistivity

1. 1 to 5-point calibration with automatic recognition of conductivity standards.

2. Selectable cell constants, reference temperatures, TDS factors, and compensation modes (linear, pure water, seawater, practical salinity).

3. Automatic electrode diagnosis with calibration points and factors.

Dissolved Oxygen

1. 1 or 2-point calibration using air-saturated water or zero oxygen solution.

2. Manual salinity and barometric pressure compensation for accurate field data.

Other Functional Features

1. Automatic temperature compensation across the entire range.

2. Auto-Read function senses and locks stable measurement endpoints.

3. Calibration due alarm prompts timely recalibration.

4. Setup menu allows customization of calibration points, resolution, stability criteria, temperature unit, date, and time.

5. Reset function restores all settings to factory defaults.

6. Expanded memory stores up to 500 data sets with recall.

7. USB communication interface for efficient data transfer and interval logging.

Applications

1. Laboratory water analysis for research and academic use.

2. Environmental monitoring of lakes, rivers, and wastewater.

3. Aquaculture water quality testing for pH, salinity, and dissolved oxygen.

4. Industrial water treatment, pharmaceutical, and food industry quality assurance.

Technical Specifications

pH

• Range: -2.000 ~ 20.000 pH

• Resolution: 0.001, 0.01, 0.1 pH (selectable)

• Accuracy: ±0.002 pH

• Calibration points: 1 to 5

• Buffer options: USA, NIST, DIN, 2 custom

ORP (optional)

• Range: ±1999.9 mV

• Resolution: 0.1, 1 mV

• Accuracy: ±0.2 mV

• Calibration points: 1

Ion Concentration (optional)

• Range: 0.001 ~ 19999 (depending on ISE range)

• Resolution: 0.001, 0.01, 0.1, 1

• Accuracy: ±0.5% F.S. (monovalent), ±1% F.S. (divalent)

• Units: ppm, mg/L, mol/L, mmol/L

• Calibration: 2 to 5 points

Conductivity

• Range:

  • 0.1 ~ 2 μS/cm (CON-0.1, optional)

  • 2 ~ 20 mS/cm (CON-1, standard)

  • 20 ~ 200 mS/cm (CON-10, optional)

• Resolution: 0.001, 0.01, 0.1, 1

• Accuracy: ±0.5% F.S.

• Calibration: 1 to 5 points

• Calibration solutions: 10 μS/cm, 84 μS/cm, 1413 μS/cm, 12.88 mS/cm, 111.8 mS/cm

• Temperature coefficient: linear (0.0 ~ 10.0%/°C), pure water

• Reference temperature: 20/25°C

• Cell constant: K = 0.1, 1, 10 or custom

TDS

• Range: 0 ~ 10.00, 100.0, 1000 ppm; 10.00, 200.0 ppt

• Resolution: 0.01, 0.1, 1

• Accuracy: ±1% F.S.

• TDS factor: 0.1 ~ 1.0 (default 0.5)

Salinity

• Range: 0.00 ~ 42.00 psu; 0.00 ~ 80.00 ppt

• Resolution: 0.01

• Accuracy: ±1% F.S.

Resistivity

• Range: 0.00 ~ 20.00 MΩ·cm

• Resolution: 0.01

• Accuracy: ±1% F.S.

Dissolved Oxygen

• Range: 0.00 ~ 20.00 mg/L; 0.0 ~ 200.0% saturation

• Resolution: 0.01 mg/L, 0.1%

• Accuracy: ±0.2 mg/L, ±2.0%

• Calibration: 1 or 2 points

• Salinity correction: 0.0 ~ 50.0 g/L (manual)

• Barometric correction: 60.0 ~ 112.5 kPa / 450 ~ 850 mmHg (manual)

Other Specifications

• Temperature compensation: 0 ~ 100°C / 32 ~ 212°F, manual or automatic

• Memory: 500 data sets

• Data interface: USB

• Power supply: DC5V power adapter

• Dimensions: 210 × 188 × 60 mm

• Net weight: 1.5 kg

• Package size: 300 × 250 × 200 mm

• Gross weight: 1.7 kg

Accessories Included

1. pH electrode

2. Conductivity electrode

3. Dissolved oxygen electrode

4. Temperature probe

5. pH buffer sachets

6. Conductivity standard solutions

7. DO electrolyte solution and membrane cap

8. Electrode holder

9. USB cable

10. Power adapter

Conclusion

The Biobase PH-900 Benchtop Water Quality Meter is a comprehensive multi-parameter system offering accurate measurements for pH, ORP, ion concentration, conductivity, TDS, salinity, resistivity, and dissolved oxygen. With its large display, advanced calibration functions, electrode diagnostics, and data management capabilities, it is an excellent solution for laboratories, industries, and research facilities requiring high-precision water quality analysis.