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| Brand | Hach |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China-manufactured under Hach licensing) |
| Model | BODTrak II |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure Differential Method |
| Measurement Ranges | 0–35, 0–70, 0–350, 0–700 mg/L |
| Detection Limit | 1 mg/L |
| Accuracy | ±1 mg/L |
| Incubation Duration | 5–10 days (user-selectable) |
| Incubation Temperature | 20 °C ±0.5 °C |
| Repeatability | 3–5% RSD |
| Sample Throughput | Up to 6 samples simultaneously |
| Data Logging Interval | Every 15 minutes |
| Total Data Points Storage | 480 |
| Software Interface | HachLink™ PC software (Windows-compatible) |
| Compliance | Designed to meet ASTM D5210, ISO 5815-1, and EPA Method 405.1 requirements for BOD₅ determination |
| Brand | Hach |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Category | Imported Instrument |
| Model | BODTrak II |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Manometric (Pressure-Difference) Method |
| Measurement Ranges | 0–35, 0–70, 0–350, 0–700 mg/L O₂ |
| Detection Limit | 0.01 mg/L O₂ |
| Accuracy | ±2% at 235 mg/L BOD |
| Repeatability | ±2% at 235 mg/L BOD |
| Incubation Temperature | 20 °C (±0.5 °C) |
| Sample Throughput | 6 samples per run (473 mL bottles) |
| Data Storage | 480 data points per sample |
| Display | Real-time graphical trace with cursor readout |
| Power Supply | AC adapter |
| Dimensions | 28.9 × 26.0 × 9.8 cm |
| Weight | 3.6 kg |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | OxiTop-i IS6 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure Difference Method (Mercury-Free Pressure Sensor) |
| Measurement Range | 0–4000 mg/L |
| Detection Limit | ≤1 mg/L |
| Accuracy | ±10% (relative to certified reference standards) |
| Measurement Duration | 2–28 days (user-definable incubation period) |
| Incubation Temperature | 20 °C default, adjustable from 15–30 °C |
| Repeatability | ≤5% RSD |
| Channel Capacity | 6 independent measurement channels per unit |
| Compliance | CE, EMC Directive 2014/30/EU |
| Power Supply | Included |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | inoLab Oxi 7310 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Electrochemical Dissolved Oxygen (DO) Method with StirrOx-G Self-Stirring Sensor |
| Measurement Range | DO: 0.00–20.00 mg/L (resolution: 0.01/0.1 mg/L) |
| Saturation | 0–200.0 % (0.01/0.1 %) |
| Partial Pressure of O₂ | 0–200.0 mbar (0.01/0.1 mbar) |
| Accuracy | ±0.5% of reading for DO, saturation, and pO₂ |
| Data Storage | 5,000 automatic / 500 manual entries |
| Interface | Mini-USB |
| Display | Backlit LCD with graphical capability |
| Power Supply | 4 × 1.5 V alkaline batteries, USB power, or universal AC adapter |
| Battery Life | up to 800 h (no backlight), 100 h (continuous backlight) |
| Compliance | GLP/AQA-compliant data logging with audit trail support |
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