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| Brand | Chu Ding |
|---|---|
| Origin | Shanghai, China |
| Model | UV756CRT |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Wavelength Repeatability | 0.2 nm |
| Spectral Bandwidth | 2 nm |
| Photometric Accuracy (Transmittance) | ±0.5% T |
| Photometric Repeatability (Transmittance) | 0.2% T |
| Transmittance Range | 0.0–125% T |
| Absorbance Range | −0.031 to 3.0 A |
| Concentration Display Range | 0–1999 |
| Stray Light | ≤0.05% T at 220 nm and 340 nm |
| Baseline Flatness | ±0.002 A (200–1000 nm) |
| Drift | ±0.001 A/h (at 500 nm, after 2 h warm-up) |
| Noise | ±0.001 A (at 500 nm, after 30 min warm-up) |
| RS232 Interface | Yes |
| Printer Support | Integrated |
| Software Compatibility | PC-based data acquisition and analysis software |
| Brand | ChuDing |
|---|---|
| Origin | Shanghai, China |
| Model | UV1900 |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±0.3 nm |
| Wavelength Repeatability | 0.2 nm |
| Spectral Bandwidth | 2 nm |
| Stray Light | ≤0.05% T (at 220 nm, NaI solution) |
| Photometric Range | –3 to +3 A |
| Photometric Accuracy | ±0.3% T (0–100% T) |
| Photometric Repeatability | 0.001 Abs (0–0.5 Abs) |
| Baseline Flatness | ≤±0.0005 A |
| Noise | ≤0.0003 Abs/h |
| Drift | ≤±0.0004 Abs/h |
| Display | 5.1-inch 320×240 dot-matrix LCD |
| Power Supply | AC 220 V/50 Hz or AC 110 V/60 Hz |
| Brand | Chu Ding |
|---|---|
| Model | UV762 |
| Wavelength Range | 190–1100 nm |
| Spectral Bandwidth | 2 nm |
| Wavelength Accuracy | ≤ ±0.3 nm (auto-calibrated at startup) |
| Wavelength Repeatability | ≤ 0.2 nm |
| Photometric Accuracy | ±0.5% T |
| Photometric Repeatability | ≤ 0.2% T |
| Transmittance Range | 0–200% T |
| Absorbance Range | −0.301 to 3.000 A |
| Stray Light | ≤ 0.15% T (at 220 nm, measured with NaI) |
| Baseline Drift | ≤ 0.004 A/h (at 500 nm) |
| Noise | ≤ 0.15% T (100% line), ≤ 0.10% T (0% line) |
| Scan Speed Modes | Fast / Medium / Slow |
| Light Source | Automatically Switching Deuterium & Tungsten Lamps |
| Display | Large-Screen LED-Based Chinese GUI Interface |
| Data Processing | Multi-wavelength (1–3 λ), Kinetic Analysis, Polynomial Curve Fitting (1st–3rd order), Derivative Spectra (1st–4th order), Spectral Storage/Export/Print |
| Brand | Chu Ding Technology |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | UV752N |
| Price | USD 1,400 (FOB Shanghai) |
| Optical System | Czerny-Turner monochromator with 1200 lines/mm grating |
| Wavelength Range | 195–1020 nm |
| Spectral Bandwidth | 4 nm |
| Wavelength Accuracy | ±2 nm |
| Wavelength Repeatability | ≤1.0 nm |
| Photometric Range | 0–199.0% T, –0.3–1.999 A, 0–1999 C |
| Photometric Accuracy | ±0.5% T |
| Photometric Repeatability | ±0.3% T |
| Optical Path Length | 10 mm (standard cuvette) |
| Stray Light | ≤0.5% T at 220 nm |
| Baseline Stability | ±0.004 A/h at 500 nm (after 60-min warm-up) |
| Display | 4-digit LCD |
| Data Interface | RS-232C serial port |
| Light Sources | 6 V/10 W halogen tungsten lamp (Philips) and deuterium lamp (long-life imported) |
| Power Supply | 110–220 V AC, 50–60 Hz |
| Brand | Chu Ding Technology |
|---|---|
| Origin | Shanghai, China |
| Model | UV759CRT / UV759 |
| Wavelength Range | 190–1100 nm |
| Spectral Bandwidth | 1.8 nm |
| Wavelength Accuracy | ±0.3 nm |
| Wavelength Repeatability | ≤0.2 nm |
| Photometric Accuracy | ±0.3% T (0–100% T), ±0.002 A (0–0.5 A), ±0.004 A (0.5–1 A) |
| Photometric Repeatability | ≤0.2% T (0–100% T), ±0.001 A (0–0.5 A), ±0.002 A (0.5–1 A) |
| Stray Light | ≤0.05% T @ 220 nm and 360 nm |
| Baseline Flatness | ±0.002 A |
| Drift | ±0.002 A/h @ 500 nm |
| Noise | ±0.001 A |
| Detector | Imported silicon photodiode |
| Light Sources | Long-life imported deuterium lamp and tungsten-halogen lamp |
| Display | 128 × 64 dot-matrix LCD |
| Measurement Modes | Transmittance (T), Absorbance (A), Concentration (C) |
| Wavelength Setting | Automatic |
| Optical Path | Single-beam with automatic source switching |
| Data Interface | USB port |
| Print Interface | Parallel port |
| Power Supply | AC 220 V / 50 Hz or AC 110 V / 60 Hz |
| Net Weight | 14 kg |
| Brand | Chu Ding Tech |
|---|---|
| Origin | Shanghai, China |
| Model | 7230G |
| Optical System | Single-beam |
| Detector | Photodiode Array |
| Wavelength Range | 320–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Spectral Bandwidth | 2 nm |
| Stray Light | ≤0.05% T @ 360 nm |
| Wavelength Repeatability | 0.2 nm |
| Photometric Accuracy | ±0.3% T |
| Photometric Repeatability | ±0.2% T |
| Baseline Linearity | ≤0.2% T |
| Drift | ≤0.001 A/h @ 500 nm |
| Noise | ≤0.1% T |
| Photometric Range | 0–200% T, −0.301–3.000 A |
| Light Source | Imported Tungsten Lamp |
| Weight | 12 kg |
| Interface | RS-232 (optional), USB, Parallel Port |
| Brand | Chu Ding Tech |
|---|---|
| Origin | Shanghai, China |
| Model | 722N |
| Wavelength Range | 320–1020 nm |
| Wavelength Accuracy | ±2 nm |
| Wavelength Repeatability | ≤1 nm |
| Spectral Bandwidth | 4 nm |
| Photometric Accuracy | ±0.5% T |
| Transmittance Range | 0–100% T |
| Absorbance Range | −0.097 to 1.99 A |
| Concentration Range | 0–1999 C (or F) |
| Stray Light | ≤0.3% T at 340 nm |
| Baseline Stability | ≤0.004 A/h at 500 nm (after 1 h warm-up) |
| Optical Path Length | 100 mm |
| Light Source | 6 V, 10 W imported tungsten lamp |
| Display | 4-digit LCD |
| Data Interface | RS-232C standard port |
| Power Supply | 220 V / 110 V AC, 50–60 Hz |
| Net Weight | 12 kg |
| Brand | Chu Ding Technology |
|---|---|
| Origin | Shanghai, China |
| Model | UV754N |
| Optical Design | Single-beam |
| Detector Type | Photomultiplier Tube (PMT) |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±2 nm |
| Wavelength Repeatability | 0.5 nm |
| Spectral Bandwidth | 4 nm |
| Stray Light | ≤0.3% T at 220 nm and 360 nm |
| Photometric Accuracy | ±0.5% T |
| Photometric Repeatability | ±0.2% T |
| Absorbance Range | –0.030 to 3.0 A |
| Transmittance Range | 0.0–200% T |
| Baseline Stability | ±0.002 A/h |
| Display | 128 × 64 dot-matrix LCD |
| Interface | RS-232C serial port |
| Data Output | Integrated thermal printer interface |
| Software Support | UV754PC quantitative analysis software suite |
| Brand | Chu Ding |
|---|---|
| Origin | Shanghai, China |
| Model | UV1900PC / UV1901PC |
| Wavelength Range | 190–1100 nm |
| Light Source | Imported Tungsten Lamp & Deuterium Lamp |
| Optical System | Dual-Beam, 1200-line/mm Plane Grating |
| Wavelength Accuracy | ≤ ±0.3 nm |
| Wavelength Repeatability | ≤ 0.1 nm |
| Stray Light | ≤ 0.05 %T (at 220 nm, NaI solution) |
| Photometric Range | –3 to +3 A |
| Noise | ≤ 0.0003 Abs/h |
| Baseline Flatness | ≤ ±0.0005 A |
| Spectral Bandwidth | 2 nm (UV1900PC), 1 nm (UV1901PC) |
| Drift | ≤ ±0.0004 Abs/h |
| Photometric Accuracy | ±0.3 %T (0–100 %T) |
| Photometric Repeatability | 0.001 Abs (0–0.5 Abs) |
| Detector | Imported Silicon Photodiode |
| Power Supply | AC 220 V/50 Hz or AC 110 V/60 Hz |
| Dimensions | 658 × 468 × 264 mm |
| Weight | 30 kg |
| Brand | Chu Ding Technology |
|---|---|
| Origin | Shanghai, China |
| Model | V729 |
| Optical System | Single-beam |
| Detector Type | Photodiode Array (PDA) |
| Wavelength Range | 320–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Spectral Bandwidth | 2 nm |
| Stray Light | ≤0.05% T |
| Wavelength Repeatability | ≤0.2 nm |
| Photometric Accuracy | ≤±0.3% T |
| Photometric Repeatability | ≤±0.1% T |
| Baseline Linearity | ±0.002 A |
| Noise | 0.001 A (at 500 nm) |
| Drift | ±0.001 A/h (at 500 nm) |
| Sample Compartment | Accepts Cuvettes from 5 mm to 100 mm Pathlength |
| Display | 320 × 240 Pixel High-Brightness LCD |
| Data Interface | USB 2.0 |
| Lamp Sources | Imported Tungsten and Deuterium Lamps |
| Power Supply | AC 220 V/50 Hz or AC 110 V/60 Hz |
| Net Weight | 16 kg |
| Brand | Chu Ding |
|---|---|
| Origin | Shanghai, China |
| Model | UV755B |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±1 nm |
| Spectral Bandwidth | 2 nm |
| Wavelength Repeatability | 0.5 nm |
| Stray Light | ≤0.1%T at 220 nm and 360 nm |
| Photometric Accuracy | ±0.5%T |
| Photometric Repeatability | ±0.2%T |
| Baseline Stability | ±0.002 A/h at 500 nm |
| Measurement Modes | Transmittance (T), Absorbance (A), Concentration (C) |
| Display | 128 × 64 dot-matrix LCD |
| Sample Compartment | Accommodates cuvettes from 5 mm to 100 mm pathlength |
| Weight | 12 kg |
| Brand | Chu Ding |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | UV757CRT |
| Price | USD 3,600 (FOB Shanghai) |
| Wavelength Range | 200–1100 nm |
| Light Sources | Imported 12 V/20 W Tungsten-Halogen Lamp & Imported Deuterium Lamp |
| Detector | Imported Photocell |
| Spectral Bandwidth | 3 nm |
| Wavelength Accuracy | ±0.3 nm (auto-calibrated at startup) |
| Wavelength Repeatability | ≤0.2 nm |
| Stray Light | ≤0.15% T (at 220 nm and 340 nm) |
| Transmittance Range | 0.0–200.0% T |
| Absorbance Range | –0.301 to 4.000 A |
| Concentration Readout Range | 0000–9999 (arbitrary units) |
| Transmittance Accuracy | ±0.5% T (verified against NIST-traceable NBS 930D standard filter) |
| Transmittance Repeatability | ≤0.2% T |
| Noise | ≤0.5% T (100% T), ≤0.2% T (0% T) |
| Drift | ≤0.004 A / 30 min |
| Baseline Linearity | ±0.004 A |
| Power Supply | AC 220 V ±22 V, 50 Hz ±1 Hz |
| Dimensions | 520 × 410 × 200 mm (W × D × H) |
| Brand | Chu Ding Technology |
|---|---|
| Origin | Shanghai, China |
| Model | VIS-722N |
| Optical System | Achromatic Czerny-Turner with 1200 lines/mm grating |
| Wavelength Range | 320–1020 nm |
| Wavelength Accuracy | ±2 nm |
| Spectral Bandwidth | 4 nm |
| Stray Light | ≤0.05% T at 360 nm |
| Photometric Accuracy | ±0.3% T |
| Photometric Repeatability | ±0.2% T |
| Baseline Drift | ≤0.1% T/h |
| Noise Level | ≤0.2% T |
| Stability | ±0.003 A/h at 500 nm |
| Wavelength Drive | Manual |
| Detector Type | Photodiode Array |
| Light Source | Imported Tungsten Halogen Lamp |
| Net Weight | 8 kg |
| Beam Type | Single-beam |
| Data Output | Optional RS-232 or USB print interface |
| Software Support | None |
| Key | Optical System: Czerny-Turner monochromator with 1200 lines/mm grating |
|---|---|
| Wavelength Range | 195–1020 nm |
| Spectral Bandwidth | 5 nm |
| Wavelength Accuracy | ±2 nm |
| Wavelength Repeatability | ±1.0 nm |
| Photometric Range | 0–199.0% T, 0–1.999 A, 0–1999 C |
| Photometric Accuracy | ±0.5% T |
| Photometric Repeatability | ±0.3% T |
| Stray Light | ≤0.3% T at 220 nm |
| Baseline Stability | ±0.004 A/h at 500 nm (after 60-min warm-up) |
| Display | 4-digit LCD |
| Output Interface | RS-232C |
| Light Sources | 6 V / 10 W halogen lamp and deuterium lamp |
| Power Supply | 110–220 V AC, 50–60 Hz |
| Standard Cuvette Pathlength | 10 mm (100 mm optional) |
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