PHS-3C Benchtop Digital pH Meter with High-Precision Glass Combination Electrode
PHS-3C Benchtop Digital pH Meter
High-Precision Benchtop Solution for Laboratories across Bangladesh
Whether operating a quality control laboratory in Dhaka, an industrial effluent treatment plant (ETP) in Gazipur, or a research center in Chittagong, precise chemical measurement is vital. The PHS-3C Benchtop Digital pH Meter is engineered to meet rigorous international testing standards while offering an intuitive, user-friendly operation. It measures both pH values (0.00 to 14.00 pH) and ORP/mV potential (-1999 to +1999 mV) with exceptional resolution and low drift.
PHS-3C Benchtop Digital pH Meter
Key Features and Performance Capabilities
1. ±0.01 High-Precision Accuracy
Equipped with a highly sensitive E-201 combination pH electrode, the PHS-3C meter delivers high repeatability and rapid response times. With an accuracy level of ±0.01 pH, it ensures reliable analytical data required for research, pharmaceutical formulations, and regulatory compliance testing.
2. Dual Measurement Modes (pH & mV/ORP)
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pH Measurement Mode: Reads liquid hydrogen ion activity across the full 0.00 to 14.00 pH spectrum.
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mV / ORP Mode: Allows connection of ORP probes to measure oxidation-reduction potential within ±1999 mV, essential for analyzing redox reactions in wastewater and chemical processing.
3. Temperature Compensation & Slope Adjustment
Temperature variations can skew pH readings. The PHS-3C incorporates manual/automatic temperature compensation ranging from 0°C to 60°C (up to 100°C depending on probe setup). By adjusting for sample temperature, the instrument prevents measurement errors caused by ambient room shifts in tropical climates like Bangladesh.
4. Automatic Standard Buffer Recognition & Calibration
System setup is straightforward with standard 2-point calibration. The internal microcomputer recognizes standard buffer solutions (4.00 pH, 6.86 pH, and 9.18 pH), guiding technicians through quick calibration steps to maintain optimal probe sensitivity.
5. Heavy-Duty Lab Design with Flexible Electrode Stand
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Large Digital Display: Clean, high-contrast digital display prevents reading errors in busy lab environments.
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Adjustable Probe Arm: Features an articulated electrode holder that holds both pH probes and temperature sensors securely in beaker solutions.
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BNC Connector Compatibility: Standard BNC probe port allows compatibility with various specialized electrodes (glass bulb, flat surface, or spear tip).
PHS-3C Benchtop Digital pH Meter
Key Applications in Bangladesh Industries
| Industry / Application | Importance of PHS-3C | Target Parameter |
| Garment & Textile ETP Plants | Monitoring neutralization tanks in Effluent Treatment Plants to comply with DoE standards. | 6.5 – 8.5 pH output limit |
| Pharmaceutical & Biotech Labs | Formulation of injectable solutions, culture media, and active drug ingredients. | Strict ±0.01 pH tolerance |
| Food, Beverage & Dairy | Testing milk acidity, fruit juices, sauce batches, and fermentation processes. | Quality monitoring (4.0 – 6.8 pH) |
| University & Research Organs | Standard laboratory equipment for chemistry, biochemistry, and environmental science experiments. | Full range 0 – 14 pH |
PHS-3C Benchtop Digital pH Meter
Practical Operating Guidelines for Long Instrument Life
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Electrode Care: Always store the glass probe tip in 3M KCl electrode storage solution. Never let the glass bulb dry out.
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Calibration Routine: Calibrate the PHS-3C meter daily or before critical testing batches using fresh pH 4.00 and 6.86 buffer solutions.
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Rinsing: Wash the electrode with distilled or deionized water between sample transfers to avoid cross-contamination.
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Stable Powering: Connect the device via a stable power outlet or voltage stabilizer to prevent line fluctuations during high-precision research.
PHS-3C Benchtop Digital pH Meter
Technical Specifications Summary
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Model: PHS-3C
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pH Range:
0.00 to 14.00 pH -
mV Range:
0 to ±1999 mV -
Resolution:
0.01 pH / 1 mV -
Accuracy:
±0.01 pH ±1 digit / ±0.1% FS (mV) -
Temperature Compensation:
0°C to 60°C (Manual/ATC) -
Calibration: 2-point standard calibration
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Input Resistance:
≥ 1 × 10¹² Ω -
Power Supply:
AC 220V ± 10%, 50Hz -
Weight / Dimensions: Approx.
1.1 kg / 220 × 160 × 65 mm
PHS-3C Benchtop Digital pH Meter
7. Frequently Asked Questions (FAQ)
Q1: What is the price of the PHS-3C Benchtop Digital pH Meter in Bangladesh?
A: Prices typically range between BDT 4,500 to BDT 8,500 depending on the specific manufacturer brand (such as Rex, Hinotek, or Shanghai Instrument), included accessories, and warranty terms.
Q2: Does the PHS-3C meter come with a pH electrode and buffer powders?
A: Yes, standard full kits include the PHS-3C host unit, a composite pH glass electrode (E-201 series), an electrode holder arm, power cord, and standard calibration buffer sachets/bottles.
Q3: How often should I calibrate the PHS-3C laboratory pH meter?
A: For accurate laboratory measurements, daily 2-point calibration is recommended. For continuous testing environments, calibrate every 4–6 hours or whenever testing high-acidity/high-alkalinity extremes.
Q4: Can I test soil pH with the PHS-3C digital pH meter?
A: Yes. To test soil pH, prepare a 1:5 soil-to-distilled-water mixture, stir thoroughly, allow the soil to settle, and immerse the composite electrode into the clear supernatant liquid.
Q5: What should I do if the pH reading drifts or fluctuates?
A: Fluctuations are usually caused by a dirty probe glass bulb, insufficient electrolyte in the reference electrode, or static charge. Clean the electrode gently with dilute acid or DI water, re-hydrate in 3M KCl solution, and recalibrate.
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