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| Brand | Hanna Instruments |
|---|---|
| Origin | Italy |
| Model | HI83099 |
| Instrument Type | Portable Photometer |
| Measurement Principle | Colorimetric Absorption (Dichromatic LED-Based Optical System) |
| Wavelengths | 420 nm, 525 nm, 575 nm, 610 nm |
| COD Range Options | 0–150 mg/L (LR), 0–1500 mg/L (MR), 0–15000 mg/L (HR) |
| COD Accuracy | ±10% of reading |
| Repeatability | ±5% |
| LOD (COD-LR) | 0.1 mg/L |
| Measurement Time | 20 min per sample (digestion not included) |
| Batch Capacity | 15 or 30 samples simultaneously (with optional digestion block) |
| Compliance | EPA Method 410.4, ISO 15705 |
| Data Storage | 200 measurement records with timestamp, sample ID, and operator ID |
| Power | Rechargeable 9V battery or AC adapter (230 VAC / 12 VDC) |
| Dimensions | 235 × 200 × 110 mm |
| Weight | 640 g |
| Certifications | CE, RoHS |
| Environmental Rating | IP67-rated housing (dust-tight, immersion-resistant up to 1 m for 30 min) |
| GLP Features | Real-time clock, audit trail, auto-zero calibration, background-lit LCD |
| Brand | Merck |
|---|---|
| Origin | Germany |
| Model | Pharo 100 |
| Instrument Type | Laboratory Water Quality Analyzer |
| Detection Capability | Multi-Parameter (≥50 parameters) |
| Wavelength Range | 320–1100 nm |
| Light Source | Tungsten Halogen Lamp |
| Optical System | Stabilized Single-Beam |
| Spectral Bandwidth | 4 nm |
| Wavelength Accuracy | ±1 nm |
| Absorbance Range | ±3.3 A |
| Absorbance Resolution | 0.001 A |
| Absorbance Accuracy | ±0.003 A (A < 0.600) |
| Cuvette Compatibility | 16 mm round, 10/20/50 mm square (auto-recognized) |
| Data Storage | 1000 test results + 4 MB for spectral/dynamic data (e.g., 100 scans, 400 kinetics curves) |
| Interfaces | 1× USB-A, 1× USB-B, 1× RS232 |
| Compliance | DIN, US EPA certified methods |
| Power | 100–240 V~, 50–60 Hz |
| Operating Temperature | +10 °C to +35 °C |
| Dimensions | 404 × 197 × 314 mm |
| Weight | ~3.7 kg (without battery) |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Shanghai, China |
| Model | S30K (S30) |
| Conductivity Range | 0.01 µS/cm to 500 mS/cm (auto-ranging) |
| Temperature Range | –5.0 to 105.0 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.2 °C |
| Conductivity Accuracy | ±0.5% of reading |
| Salt Range | 0.00–80.00 ppt |
| TDS Range | 0.1 mg/L–500 g/L |
| Electrode Constant | User-definable |
| Display | LCD with multi-parameter readout |
| Power | External AC adapter or 4× AA (LR6) batteries |
| Auto-Temperature Compensation (ATC) | Yes |
| Endpoint Detection | Auto-hold with stability-based locking |
| Buffer Recognition | Automatic buffer ID during calibration |
| Compliance | Designed for GLP-compliant workflows |
| Brand | Truelab |
|---|---|
| Origin | Shanghai, China |
| Model | WGZ-2-XJ |
| Minimum Readout | 0.01 MCF |
| Measuring Range | 0–6 MCF |
| Basic Error | ±5% F.S. (McFarland Units) |
| Repeatability | ≤1.5% |
| Display | Backlit LCD with Microprocessor Control |
| Interface | RS232 Serial Port |
| Light Source | High-Intensity Stable LED (Rated Lifetime: 100,000 hours) |
| Data Storage | Internal Clock-Synchronized Memory for Calibration Values and Measurement Logs |
| Measurement Modes | Auto-Balanced Reading, Timed-Acquisition, Averaging Mode for Unstable Samples |
| Optical System | Precision Aligned Path with Chromatic Compensation |
| Compliance | Designed to support GLP-compliant workflows in microbiological water testing |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR800 Series (DR820/DR850/DR890) |
| Instrument Type | Portable/Handheld Spectrophotometric Water Quality Analyzer |
| Detection Capability | Multi-parameter (Colorimetric Analysis via Predefined Methods) |
| Wavelength Range (DR890) | 420, 520, 560, 610 nm |
| Wavelength Accuracy | ±1 nm |
| Photometric Range | 0–2.0 Absorbance Units (A) |
| Wavelength Selection | Automatic |
| Readout Modes | % Transmittance, Absorbance, Concentration |
| Data Storage Capacity | 99 Measurement Records |
| Power Supply | 4 × AA Alkaline Batteries |
| Weight | 470 g |
| Operating Environment | 0–50 °C, ≤90% RH (non-condensing) |
| Connectivity | IR Interface (via optional RS232 Data Transfer Adapter) |
| Compliance | Designed for field use in accordance with EPA-approved colorimetric methods and ASTM D5116/D5257 practices for portable water analysis |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR1010 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Spectrophotometric (Dichromatic Absorption at 420 nm and 610 nm) |
| Wavelength Accuracy | ±1 nm |
| Photometric Linearity | ±0.002 A (0–1 A) |
| Photometric Repeatability | ±0.005 A (0–1 A) |
| Photometric Accuracy | ±0.005 A at 1.0 ABS |
| Light Source | LED |
| Detector | Silicon Photodiode |
| Display | 4-digit LCD, 1.5 cm character height |
| Optical Range | 0–2 A |
| Drift | <1.0% at 420 nm |
| Power Supply | 6 VDC adapter (190–240 VAC/50 Hz) or 4 × AA alkaline batteries |
| Battery Life | Up to 6 months (typical usage) |
| Operating Temperature | 0–50 °C |
| Storage Temperature | −20–60 °C |
| Relative Humidity | ≤80% at 40 °C |
| Enclosure Rating | IP41 |
| Dimensions | 24.0 × 19.8 × 12.0 cm |
| Weight | 2.0 kg |
| Data Interface | RS232 serial port |
| Readout Modes | % Transmittance, Absorbance, Concentration |
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