Wincom Company Ltd. manufactured digital pH meters are categorized by design type, technical specifications, and laboratory functionality. They specialize in water analysis, agricultural testing, and cosmetics quality control. [1, 2, 3, 4, 5]
Comparison of Popular Models
| Model | Type | pH Range | Resolution & Accuracy | Key Features |
|---|---|---|---|---|
| Wincom PHS-25 | Benchtop / Tabletop | 0.00 to 14.00 pH | 0.01 pH pm0.05 pH | Measures pH, mV (ORP), and Temp (-9.9°C to 99.9°C); features composite E-201-C electrode. |
| Wincom PH-8414 | Portable | 0.00 to 14.00 pH | 0.01 pH pm 0.01 pH | Manual/automatic temperature compensation (0°C to 100°C); ideal for outdoor or field laboratory testing. |
| Wincom PHS-2F | Intelligent Benchtop | 0.00 to 14.00 pH | 0.01 pH pm 0.01 pH | Features computer control options, Automatic Temperature Compensation (ATC), and high-precision multi-parameter reading. |
| Wincom PH98108 | Pen / Pocket Type | 0.0 to 14.00 pH | 0.1 pH pm 0.05 pH | Ultra-portable waterproof body, battery-operated 4 x 1.5V, budget-friendly for field soil and water checks. |
Step-by-Step Operation Guide (Standard PHS Benchtop Series)
To operate a standard benchtop Wincom pH meter accurately, follow these steps:
- Power Initialization: Connect the instrument to its standard power source and switch the device ON to allow the electronic components to stabilize.
- Electrode Cleaning: Remove the composite glass electrode from its storage solution and rinse the tip thoroughly with deionized or distilled water. Blot dry gently with a lint-free tissue.
- Buffer Calibration: Immerse the electrode in standard calibration buffer solutions (typically pH 4.00, 7.00, or 10.00). Adjust the calibration knobs or execute the digital menu auto-calibration until the display accurately locks onto the buffer value.
- Sample Testing: Rinse the electrode again, submerge it into your liquid sample, and wait roughly 1 to 2 minutes until the numeric digital reading completely stabilizes. Record the final pH value alongside the measured temperature.
- Electrode Storage: Clean the tip post-measurement. Never store the probe in distilled water. Always submerge it back inside a protective cap filled with a 3 mol/L KCL storage solution to maintain the reference membrane functionality.
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