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| Brand | Truelab |
|---|---|
| Origin | Shanghai, China |
| Model | UV-752 |
| Wavelength Range | 200–1000 nm |
| Spectral Bandwidth | 4 nm |
| Wavelength Accuracy | ±2.0 nm |
| Wavelength Repeatability | ±1.0 nm |
| Stray Light | ≤0.5% T (at 220 nm and 340 nm) |
| Photometric Accuracy | ±0.5% T |
| Photometric Repeatability | ±0.2% T |
| Baseline Drift | ±0.003 A/h |
| Detector | Photodiode Array |
| Optical Design | Dual-Beam |
| Wavelength Resolution | 0.1 nm step |
| Display | 128×64 LCD |
| Dimensions | 456 × 375 × 220 mm |
| Data Interface | USB |
| Software | UV-Solution Workstation |
| Brand | SOPOTOP |
|---|---|
| Origin | Shanghai, China |
| Model Series | 721, 722, 7230G, 723PC |
| Optical System | Dual-beam |
| Detector Type | Photodiode Array |
| Wavelength Range | 325–1100 nm (model-dependent) |
| Spectral Bandwidth | 2–5 nm |
| Wavelength Accuracy | ±1.0 nm (7230G & 723PC), ±2.0 nm (721 & 722) |
| Wavelength Repeatability | 0.5–1.0 nm |
| Stray Light | ≤0.2%T at 360 nm (723PC) to ≤0.5%T at 360 nm (721) |
| Photometric Accuracy | ±0.5%T (722/7230G/723PC), ±1.0%T (721) |
| Photometric Repeatability | ±0.2%T (722/7230G/723PC), ±0.5%T (721) |
| Baseline Linearity | ±0.004A (723PC only) |
| Stability | ±0.003A/h (7230G & 723PC), ±0.5%T/5min (721 & 722) |
| Display | 128×64 LCD |
| Dimensions | 456 × 375 × 220 mm |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR3900 |
| Optical Design | Single-beam (with reference compensation logic) |
| Detector | Photodiode Array |
| Wavelength Range | 320–1100 nm |
| Wavelength Accuracy | ±1.5 nm (340–900 nm) |
| Spectral Bandwidth | 5 nm |
| Wavelength Repeatability | <0.5 nm |
| Stray Light | <0.05% T at 220 nm (KCl) and <0.1% T at 340 nm (NaNO₂) |
| Display | 7″ TFT WVGA Color Touchscreen (800 × 480 pixels) |
| Data Storage | 2000 measurement records (including sample ID, operator ID, date/time, result) |
| Preloaded Methods | >220 EPA-, ISO-, and ASTM-compliant water quality methods |
| User Methods | Up to 100 custom programs |
| Barcode Recognition | Auto-identification of Hach TNTplus® and LCK vial barcodes |
| AQA Compliance | Automated Quality Assurance workflow with scheduled verification, standard validation, interference testing, and audit-trail logging |
| Connectivity | Dual USB ports (front/rear), 10/100 Mbps Ethernet, optional RS-232 |
| Software Integration | Compatible with Hach LINK2SC for bidirectional lab-to-field data synchronization and SC1000 controller correlation |
| Power Supply | 100–240 V AC, 50–60 Hz |
| Dimensions | 151 × 350 × 255 mm (W × D × H) |
| Weight | 4.2 kg |
| Brand | MupuDa |
|---|---|
| Origin | Shanghai, China |
| Model | UV-6100 |
| Optical System | Dual-beam |
| Detector | Photodiode Array (PDA) |
| Wavelength Range | 190–1100 nm |
| Spectral Bandwidth | 1.8 nm |
| Wavelength Accuracy | ±0.3 nm |
| Wavelength Repeatability | ≤0.1 nm |
| Stray Light | ≤0.03%T at 220 nm and 360 nm |
| Photometric Accuracy | ±0.002 A (0–0.5 A), ±0.004 A (0.5–1.0 A), ±0.2%T (0–100%T) |
| Photometric Repeatability | ≤0.001 A (0–0.5 A), ≤0.002 A (0.5–1.0 A), ≤0.15%T (0–100%T) |
| Baseline Drift | ±0.0003 A/h (at 500 nm, after warm-up) |
| Baseline Flatness | ±0.0005 A |
| Noise Level | 0.0003 Abs (at 500 nm) |
| Scan Speed | High/Medium/Low, up to 3800 nm/min |
| Photometric Range | –4 to +4 A, 0–200%T, 0–9999 C |
| Display | 320 × 240 dot-matrix LCD |
| Data Interface | USB port, parallel printer port |
| Power Supply | AC 220 V/50 Hz or AC 110 V/60 Hz |
| Dimensions | 590 × 420 × 260 mm |
| Weight | 26 kg |
| Brand | Truelab |
|---|---|
| Origin | Shanghai, China |
| Model | UV-2800 / UV-2800PC |
| Optical Design | Dual-beam |
| Detector | Photodiode Array (PDA) |
| Wavelength Range | 190–1100 nm |
| Spectral Bandwidth | 1.8 nm |
| Wavelength Accuracy | ±0.3 nm |
| Wavelength Repeatability | ±0.15 nm |
| Stray Light | ≤0.05% T |
| Baseline Flatness | ±0.001 A |
| Baseline Drift | ≤0.0005 A/h |
| Photometric Accuracy | ±0.3% T |
| Photometric Repeatability | ±0.15% T |
| Display | 320 × 240 LCD |
| Brand | Mapada |
|---|---|
| Model | UV-1800 |
| Optical System | Single-beam |
| Detector | Photodiode Array |
| Wavelength Range | 190–1100 nm |
| Spectral Bandwidth | 2 nm |
| Wavelength Accuracy | ±0.5 nm |
| Wavelength Repeatability | ≤0.2 nm |
| Stray Light | ≤0.05% T (at 220 nm and 360 nm) |
| Photometric Accuracy | ±0.002 A (0–0.5 A), ±0.004 A (0.5–1 A), ±0.3% T (0–100% T) |
| Photometric Repeatability | ≤0.001 A (0–0.5 A), ≤0.002 A (0.5–1 A), ≤0.15% T (0–100% T) |
| Baseline Drift | ±0.001 A/h (at 500 nm, after warm-up) |
| Baseline Flatness | ±0.002 A (200–1000 nm) |
| Noise Level | 0.0005 Abs (at 500 nm) |
| Photometric Range | –0.3 to 3 A, 0–200% T, 0–9999 C |
| Light Sources | Imported long-life deuterium lamp and tungsten-halogen lamp |
| Display | 128 × 64 dot-matrix LCD |
| Data Interface | USB port + parallel printer port |
| Dimensions | 490 × 360 × 240 mm |
| Weight | 14 kg |
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