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| Brand | SOPOTOP |
|---|---|
| Origin | Shanghai, China |
| Model | DO6401 |
| Measurement Range | 0.00–40.00 mg/L and 0.0–400.0% saturation |
| Resolution | 0.01 mg/L, 0.1% |
| Accuracy | ±1.5% F.S. |
| Temperature Range | −5.0 to 120.0 °C (23.0 to 248.0 °F) |
| Temp. Resolution | 0.1 °C / 0.1 °F |
| Temp. Accuracy | ±0.3 °C / ±0.5 °F |
| Salinity Compensation | 0.0–45.0 ppt |
| Pressure Compensation | 450–800 mmHg or 0.500–1.100 bar |
| Pipe Pressure Compensation | 0.00–1.00 kg |
| Depth Compensation | 0.0–10.0 m |
| IP Rating | IP67 |
| Data Storage | 100 sets |
| Auto Power-Off | Configurable (default: 10 min inactivity) |
| Display | 3.2-inch multi-line LCD with anti-scratch coating |
| Power | 2 × 1.5 V AA batteries |
| Electrode Diagnostics | Offset & Slope display, self-diagnostic status |
| Connectivity | Optional USB interface |
| Software | Optional data acquisition software with PC compatibility |
| Brand | SOP TOP |
|---|---|
| Model | DO35 |
| Type | Portable Electrochemical Dissolved Oxygen Meter |
| Measurement Principle | Clark-type Polarographic Membrane Electrode |
| Display | Multi-line LED with backlight (22 × 32 mm) |
| Protection Rating | IP67 |
| Power Supply | 1 × AA alkaline battery (1.5 V) |
| Auto-off | 6 min inactivity with data retention |
| Data Storage | 10 measurement records |
| Operating Temperature | 0–60.0 °C (32–140.0 °F) |
| DO Range | 0.00–20.00 mg/L and 0.0–200.0 % saturation |
| Resolution | 0.01 mg/L, 0.1 %, 0.1 °C, 1 °F |
| Accuracy | ±1.5 % of full scale |
| Temperature Compensation | Automatic or manual |
| Atmospheric Pressure Compensation | 600–1100 mbar |
| Salinity Compensation | 0.0–140.0 ppt |
| Calibration | 1-point or 2-point (air-saturated water or zero-oxygen solution) |
| Hold Function | Yes |
| Low-Battery Indicator | Yes |
| Brand | SOP TOP |
|---|---|
| Origin | Shanghai, China |
| Model | DO6400 |
| Measurement Range | 0.00–40.00 mg/L, 0.0–400.0% |
| Resolution | 0.01 mg/L, 0.1% |
| Accuracy | ±1.5% F.S. |
| Temperature Range | −5.0–120.0 °C (23.0–248.0 °F) |
| Temp. Resolution | 0.1 °C/°F |
| Temp. Accuracy | ±0.3 °C, ±0.5 °F |
| Salinity Compensation | 0.0–45.0 ppt |
| Pressure Compensation | 450–800 mmHg (0.500–1.100 bar) |
| Pipeline Pressure Compensation | 0.00–1.00 kg |
| Depth Compensation | 0.0–10.0 m |
| Data Storage | 100 sets |
| Auto-off | Configurable (default: 10 min idle) |
| Brand | SOP TOP |
|---|---|
| Model | CON6301 |
| Conductivity Range | 0–5.000 µS/cm, 0–50.00 µS/cm, 0–500.0 µS/cm, 0–5000 µS/cm, 0–50.00 mS/cm, 0–500.0 mS/cm |
| TDS Range | 0–500 ppt |
| Salinity Range | 0–325 ppt |
| Conductivity Resolution | 0.001–1 µS/cm, 0.01 mS/cm |
| Conductivity Accuracy | ±1% of Full Scale |
| Resistivity Range | 0.00–18.30 MΩ·cm |
| Resistivity Resolution | 0.01 MΩ·cm |
| Temperature Range | −5.0–120.0 °C (23.0–248.0 °F) |
| Temperature Accuracy | ±0.3 °C, ±0.5 °F |
| Temperature Resolution | 0.1 °C / 0.1 °F |
| Temp. Compensation | Auto/Manual |
| Reference Temp. | 15.0–30.0 °C (factory set at 25.0 °C) |
| Temp. Coefficient | 0.00–9.99% (factory default 2.00%) |
| TDS Factor | 0.40–1.00 (factory default 0.50) |
| Salinity Factor | 0.65 |
| Cell Constant Options | 0.01, 0.1, 1.0, 10.0 cm⁻¹ |
| IP Rating | IP67 |
| Data Storage | 100 measurement records |
| Power | 2 × 1.5 V AA batteries |
| Auto-Off | Configurable (default: 10 min idle) |
| Brand | SOP TOP |
|---|---|
| Model | ION6500 |
| Type | Benchtop Ion-Selective Electrode (ISE) Meter |
| Measurement Principle | Potentiometric Ion-Selective Electrode Detection |
| pH Range | −2.000 to 20.000 |
| mV Range | −2000.0 to +2000.0 mV |
| Ion Concentration Range | 0.000–9999 mg/L |
| Temperature Range | −10.0 to 120.0 °C (14.0–248.0 °F) |
| Resolution | 0.001 pH / 0.1 mV / 0.001 mg/L / 0.1 °C / 0.1 °F |
| Accuracy | ±0.001 pH / ±0.2 mV / ±0.005 mg/L / ±0.3 °C / ±0.5 °F |
| Calibration | Up to 5-point pH, up to 7-point ISE |
| Data Storage | 1000 measurement records |
| Interface | USB-B port for PC connectivity |
| Power | Internal rechargeable 3.7 V Li-ion battery (battery not included) |
| Display | 5-inch LED, 120° viewing angle |
| Compliance | Designed per IEC 61010-1 for laboratory electrical safety |
| Software | Included Windows-compatible data acquisition software with audit trail logging capability |
| Brand | SOPTOP |
|---|---|
| Origin | Shanghai, China |
| Model | CON35 |
| Measurement Range | 0–200.0 µS/cm (ppm), 0–50.0 mS/cm (ppt) |
| Temperature Range | 0–60.0 °C / 32–140.0 °F |
| Temperature Compensation | Automatic or Manual |
| Resolution | 0.1 / 1 µS/cm (ppm), 0.1 / 1 mS/cm (ppt), 0.1 °C, 1 °F |
| Accuracy | ±1% F.S. |
| Temperature Coefficient Adjustment | 0.00–10.00% |
| TDS Conversion Factor | 0.40–1.00 |
| Salinity Factor | 0.65 |
| Electrode Material | PPS-encapsulated graphite conductivity sensor |
| Calibration | Single-point auto-ranging calibration |
| Data Storage | 10 measurement records |
| Ingress Protection | IP67 |
| Display | Multi-line LED, 22 × 32 mm active area with energy-efficient backlight |
| Power Supply | 1 × AA alkaline battery (1.5 V) |
| Brand | SOP TOP |
|---|---|
| Model | CON6300 |
| Conductivity Range | 0–5.000 µS/cm, 0–50.00 µS/cm, 0–500.0 µS/cm, 0–5000 µS/cm, 0–50.00 mS/cm, 0–500.0 mS/cm |
| TDS Range | 0–500 ppt |
| Salinity Range | 0–325 ppt |
| Conductivity Resolution | 0.001–1 µS/cm, 0.01 mS/cm |
| Conductivity Accuracy | ±1% of Full Scale |
| Resistivity Range | 0.00–18.30 MΩ·cm |
| Resistivity Resolution | 0.01 MΩ·cm |
| Temperature Range | −5.0–120.0 °C (23.0–248.0 °F) |
| Temperature Accuracy | ±0.3 °C, ±0.5 °F |
| Temperature Resolution | 0.1 °C / 0.1 °F |
| Temp. Compensation | Auto/Manual |
| Reference Temp. | 15.0–30.0 °C (default 25.0 °C) |
| Temp. Coefficient | 0.00–9.99% (default 2.00%) |
| TDS Factor | 0.40–1.00 (default 0.50) |
| Salinity Factor | 0.65 |
| Cell Constant Options | 0.01, 0.1, 1.0, 10.0 cm⁻¹ |
| Data Storage | 100 memory slots |
| Power | Rechargeable 3.7 V Li-ion battery (base-integrated, battery not included) |
| Interface | USB port for PC connectivity |
| Display | 5-inch multi-line LCD with high-brightness backlight |
| Features | Auto-hold, electrode diagnostics, temperature offset adjustment, key beep, programmable auto-off (default 10 min idle) |
| Brand | SOP TOP |
|---|---|
| Model | ION6501 |
| Type | Portable Electrochemical Ion Analyzer |
| Measurement Principles | Potentiometric Ion-Selective Electrode (ISE) Method |
| pH Range | −2.000 to 20.000 pH |
| mV Range | −2000.0 to +2000.0 mV |
| Ion Concentration Range | 0.000–9999 mg/L (ion-specific, dependent on calibrated ISE) |
| Temperature Range | −10.0 to 120.0 °C (14.0 to 248.0 °F) |
| Temperature Compensation | Automatic or Manual |
| Resolution | 0.001 pH / 0.1 mV / 0.001 mg/L / 0.1 °C / 0.1 °F |
| Accuracy | ±0.001 pH / ±0.2 mV / ±0.005 mg/L / ±0.3 °C / ±0.5 °F |
| Calibration | Up to 5-point pH calibration |
| Calibration Reminders | Configurable interval (0–60 days) |
| Data Storage | 1000 measurement records with timestamp, user ID, instrument ID, and calibration metadata |
| Power Supply | 2 × 1.5 V AA alkaline batteries |
| Display | 3.2-inch multi-line LCD with anti-scratch coating and adjustable high-brightness backlight |
| Communication Interface | USB 2.0 compliant port |
| Software | Windows-compatible data acquisition software with audit trail logging capability |
| Auto-Power-Off | Programmable (default: 10 min idle timeout) |
| User Authentication | 4-digit password protection |
| Instrument & User ID Customization | 4-digit serial number + 2-digit user code |
| Date/Time Format Options | YY/MM/DD, MM/DD/YY, DD/MM/YY |
| Reading Lock Function | Enable/disable |
| Temperature Offset Adjustment | ±5.0 °C (±9.0 °F) |
| Real-time Calibration Diagnostics | Slope (%), offset (mV), and calibrated point count displayed during/after calibration |
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