Digital pH Meter Laboratory/Research/Industry

PHS-3C BENCHTOP DIGITAL pH METER

Model: PHS-3C
Category: Electrochemical Analytical Instrument
Instrument Type: Laboratory Benchtop pH Meter

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PRODUCT DESCRIPTION

The PHS-3C Benchtop Digital pH Meter is a precision electrochemical
analytical instrument designed for accurate determination of hydrogen
ion concentration (pH), electrode potential (mV), and temperature in
aqueous samples.

The instrument is widely used in analytical chemistry, pharmaceutical
quality control, environmental monitoring, biotechnology, food and
beverage analysis, educational laboratories, water treatment plants,
and research institutions.

Designed for laboratory bench operation, the PHS-3C combines reliable
electronic circuitry, stable signal processing, and user-friendly
operation to provide rapid and reproducible pH measurements.

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PRODUCT INFORMATION

Product Name:
PHS-3C Digital pH Meter

Model Number:
PHS-3C

Instrument Category:
Electrochemical Analyzer

Measurement Principle:
Potentiometric Analysis

Display Type:
LCD Digital Display

Electrode Type:
Combination Glass Electrode

Reference Electrode:
Ag/AgCl Reference System

Temperature Compensation:
Manual / Automatic (Depending on Version)

Power Supply:
AC Adapter

Installation:
Benchtop Laboratory Instrument

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MEASUREMENT PRINCIPLE

The instrument measures the electrical potential difference generated
between a glass pH sensing electrode and a reference electrode.

The measured potential is converted according to the Nernst Equation:

E = E₀ + (2.303RT/nF) log [H⁺]

Where:

E = Measured Electrode Potential
E₀ = Standard Electrode Potential
R = Universal Gas Constant
T = Absolute Temperature (K)
n = Number of Electrons
F = Faraday Constant

The hydrogen ion concentration is subsequently converted into pH:

pH = −log₁₀[H⁺]

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TECHNICAL SPECIFICATIONS

pH Range:
0.00 – 14.00 pH

Resolution:
0.01 pH

Accuracy:
±0.01 pH

Repeatability:
±0.01 pH

mV Range:
−1999 mV to +1999 mV

mV Resolution:
1 mV

Temperature Range:
0 – 100°C

Display:
LCD Digital Screen

Calibration Points:
2-Point Calibration

Input Impedance:
≥ 1 × 10¹² Ω

Power Requirement:
220 V AC / Adapter

Operating Temperature:
5 – 40°C

Relative Humidity:
≤ 85%

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KEY FEATURES

✓ High Precision Measurement

✓ Fast Electrode Response

✓ Excellent Repeatability

✓ Stable Electronic Design

✓ Large LCD Screen

✓ User-Friendly Interface

✓ Reliable Laboratory Performance

✓ Rugged Construction

✓ Low Drift Measurement System

✓ Professional Electrode Holder Assembly

✓ Suitable for Research and Routine Analysis

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STANDARD CONFIGURATION

• Main PHS-3C Meter Unit

• Electrode Holder Arm

• Combination pH Electrode

• Electrode Clamp

• AC Power Adapter

• Instruction Manual

• Calibration Accessories

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ANALYTICAL APPLICATIONS

ANALYTICAL CHEMISTRY

• Acid/Base Analysis
• Titration Monitoring
• Buffer Verification
• Chemical Process Monitoring

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PHARMACEUTICAL INDUSTRY

• Raw Material Testing
• In-Process Quality Control
• Finished Product Analysis
• Stability Studies

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BIOCHEMISTRY

• Enzyme Activity Studies
• Buffer Preparation
• Cell Culture Media Adjustment
• Protein Research

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MICROBIOLOGY

• Culture Media Preparation
• Fermentation Monitoring
• Microbial Growth Studies

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ENVIRONMENTAL SCIENCE

• Water Quality Assessment
• Wastewater Monitoring
• River Water Analysis
• Groundwater Evaluation

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FOOD & BEVERAGE INDUSTRY

• Beverage Quality Control
• Dairy Analysis
• Brewing Applications
• Fermentation Monitoring

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ACADEMIC RESEARCH

• Laboratory Training
• Undergraduate

CALIBRATION PROCEDURE

Recommended Calibration Buffers:

• pH 4.01
• pH 6.86
• pH 9.18

Typical Procedure:

1. Switch ON instrument
2. Rinse electrode with distilled water
3. Immerse electrode in pH 6.86 buffer
4. Adjust calibration
5. Verify with pH 4.01 or pH 9.18 buffer
6. Confirm measurement accuracy
7. Begin sample analysis

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ADVANTAGES

• Rapid Measurement
• High Accuracy
• Low Maintenance
• Cost Effective
• Reliable Results
• Long Electrode Life
• Easy Calibration
• Suitable for Continuous Use
• Industry Accepted Measurement Principle

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COMPATIBLE ACCESSORIES

• pH Electrodes
• Temperature Probes
• Electrode Storage Solution
• Buffer Tablets
• Buffer Solutions
• Electrode Cleaning Solution
• Distilled Water Bottles

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SAFETY INFORMATION

• Handle glass electrodes carefully.
• Do not expose instrument to excessive moisture.
• Use approved power adapter only.
• Disconnect power before maintenance.
• Avoid mechanical shock.

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ELECTRODE CARE

• Never store electrode dry.
• Store in electrode storage solution.
• Rinse after every measurement.
• Avoid touching glass membrane.
• Clean periodically for best performance.

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STORAGE CONDITIONS

Instrument:

Temperature:
10 – 35°C

Humidity:
Below 80%

Store:
Clean, dry laboratory environment

Avoid:

• Direct sunlight
• Corrosive atmosphere
• Excessive dust
• High humidity

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PACKAGING

Supplied as a complete laboratory measurement system containing
the main instrument, electrode holder assembly, electrode,
power adapter, and operational documentation.