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| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi7310 |
| Instrument Type | Benchtop (not portable — corrected per technical specification) |
| Measurement Principle | Electrochemical (Clark-type polarographic sensor) |
| Dissolved Oxygen Range | 0.00–19.99 mg/L |
| Accuracy | ±0.5% of reading |
| Data Storage | 5,000 automatic / 500 manual entries |
| Pressure Compensation | Automatic (integrated barometric sensor, 500–1100 mbar) |
| Salinity Compensation | Manual (0.0–70.0 g/kg) |
| Temperature Range | 0.0–50.0 °C |
| Temperature Accuracy | ±0.1 °C |
| Interface | Mini-USB |
| Display | Backlit LCD with graphical capability |
| Power | AC adapter, 4×AA alkaline batteries, or USB bus power |
| Battery Life | Up to 800 h (backlight off), 100 h (backlight on) |
| Compliance | GLP/AQA-compliant data logging with audit trail support |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | FDO925 |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching |
| Measurement Range | 0.00–20.00 mg/L |
| Response Time (T99) | <60 s |
| Temperature Range | 0–50.0 °C ± 0.2 °C |
| DO Accuracy | ±0.5% of reading |
| Saturation Range | 0–200.0 % |
| Partial Pressure Range | 0–200 hPa ± 0.5% of reading |
| Electrode Material | POM body with stainless steel tip |
| Dimensions | 140 mm ± 1 mm (L) × 15.3 mm ± 0.2 mm (Ø) |
| Cable Options | 1.5 m, 3 m, 6 m, 25 m (Kevlar-reinforced) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | inoLab Oxi 7310 |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical (Polarographic) |
| Dissolved Oxygen Range | 0.00–19.99 mg/L |
| Accuracy | ±0.5% of reading |
| Data Storage Capacity | 5,000 automatic / 500 manual entries |
| Pressure Compensation | Automatic (500–1100 mbar) |
| Salinity Compensation | Manual (0–70.0 g/kg) |
| Temperature Range | 0.0–50.0 °C |
| Temperature Accuracy | ±0.1 °C |
| Interface | Mini-USB |
| Display | Backlit LCD with graphical capability |
| Power Supply | 4 × 1.5 V alkaline batteries, USB bus power, or universal AC adapter |
| Battery Life | Up to 800 h (no backlight), 100 h (continuous backlight) |
| Compliance | GLP/AQA-compliant data logging |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 3310 |
| Measurement Principle | Electrochemical Clark-type Polarographic Sensor |
| DO Range | 0.00–19.99 mg/L (±0.5% of reading), up to 90 mg/L |
| Saturation Range | 0.0–199.9% (±0.5%), up to 600% |
| Partial Pressure Range | 0–199.9 hPa / 0–1250 hPa (±0.5%) |
| Temperature Range | −5.0–105.0 °C (±0.1 °C) |
| Data Storage | 5000 automatic + 200 manual entries |
| IP Rating | IP66/IP67 |
| Battery Life | Up to 1000 h (150 h with backlight) |
| Interface | Waterproof USB |
| Calibration | Automatic OxiCal dry-air or saturated air method with electrode status feedback |
| Temperature Compensation | ATC (Automatic Temperature Compensation) |
| Compliance | Designed for GLP-compliant field and lab use |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | DurOx325-3 |
| Measurement Principle | Electrochemical (Polarographic) |
| IP Rating | IP68 (2 bar) |
| Cable Length | 3 m |
| Temperature Compensation | Integrated Dual-Temperature IMT Sensor |
| Zero Drift | None |
| Electrolyte Service Life | Up to 6 months |
| Storage/Calibration Kit | OxiCal®-D included |
| Protective Cap | SK-D standard |
| Application Class | Laboratory & Field-Portable Instruments |
| Compliance | Designed for ASTM D888, ISO 5814, EN 25814, and EPA Method 360.1 |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 3210 |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical (Clark-type polarographic sensor) |
| DO Range | 0.00–19.99 mg/L |
| Accuracy | ±0.5% of reading |
| Saturation Range | 0.0–199.9% (±0.5% of reading) |
| Partial Pressure Range | 0–199.9 hPa / 0–1250 hPa (±0.5% of reading) |
| Temperature Range | −5.0–105.0 °C (±0.1 °C) |
| Resolution | 0.01 mg/L |
| Display | 7-segment LCD with backlight |
| IP Rating | IP66/IP67 |
| Battery Life | up to 2500 hours (4 × AA alkaline) |
| Data Storage | 200 manual entries |
| Auto-Read & Auto-Off (configurable | 10 min – 24 h) |
| Calibration | Wet-air saturation method with CellOx 325 or DurOx 325 sensors |
| ATC | Automatic temperature compensation |
| Pressure Compensation | Automatic (500–1100 mbar) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 3205 |
| Measurement Principle | Electrochemical (Clark-type polarographic sensor) |
| DO Range | 0.00–19.99 mg/L (±0.5% of reading), up to 90 mg/L |
| Saturation Range | 0.0–199.9% (±0.5%), up to 600% |
| Partial Pressure Range | 0–199.9 hPa / 0–1250 hPa (±0.5%) |
| Temperature Range | −5.0 to +105.0 °C (±0.1 °C) |
| IP Rating | IP66/IP67 |
| Power | 4×AA alkaline batteries (2500 h continuous operation) |
| Dimensions | 180 × 80 × 55 mm (H×W×D) |
| Weight | ~400 g |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | StirrOx-G |
| Measurement Principle | Electrochemical (Clark-type polarographic sensor) |
| Measurement Range | 0–50 mg/L O₂ |
| Temperature Range | 0–50 °C |
| Electrode Material | Gold cathode |
| Body Material | Polyoxymethylene (POM) |
| Integrated Temperature Sensor | NTC thermistor |
| Stirring Mechanism | Built-in magnetic stirrer |
| Zero-point Calibration | Not required |
| Membrane Leak Detection | Integrated monitoring system |
| Application Type | Laboratory-grade DO measurement |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | CellOx 325 |
| Measurement Principle | Polarographic Electrochemical Sensor |
| Measurement Range | 0–50 mg/L |
| Temperature Range | 0–50 °C (NTC probe) |
| Electrode Body Material | POM |
| Cathode Material | Gold |
| Cable Length | 1.5 m (standard, IP67 connector) |
| Electrolyte Service Life | Up to 6 months |
| Zero Drift | Negligible (no zero-point calibration required) |
| Oxygen Consumption Rate | 0.008 µg·h⁻¹·(mg·L⁻¹)⁻¹ |
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