N4/N2 Series Economic UV-VIS Spectrophotometers

The N4/N2 series is a line of economic UV-VIS spectrophotometers designed for routine quantitative analysis in clinical, biochemical, environmental, and quality control laboratories. Featuring a 7-inch color touch screen and advanced optical system, these instruments offer reliable performance with easy operation. Choose from 4 models to suit your specific needs – from basic concentration measurement to full wavelength scanning.
 
Key Features
 
Advanced Optical System
 
- Single beam design with Czerny-Turner monochromator
- 1200 lines/mm grating for accurate wavelength selection
- Silicon photocell detector for stable performance
- Spectrum bandwidth: 2nm
- Wavelength accuracy: ±1nm
- Wavelength repeatability: ≤0.5nm
 
Intuitive Touch Screen Interface
 
- 7-inch multi-color capacitive touch screen
- Patented technology for simple and effective human-computer interaction
- Clear display of test data and parameters
 
Versatile Analysis Functions
 
- Automatic wavelength setting – fast and accurate
- Direct concentration read-out and concentration factor setting
- Linear regression and peak detection
- Multi-wavelength measurement capability
- S models (N4S, N2S) add full wavelength scanning and kinetic time scanning
 
Data Management & Connectivity
 
- USB communication port for PC connection
- Optional UVWIN8 professional data processing software
- Optional built-in thermal printer for on-site report printing
- Large memory capacity – stores test results and calibration data
- Advanced power shut-down protection – memorizes detected data and parameters for fast initialization
 
Model Comparison
 
N4
 
- Wavelength Range: 190–1100nm
- Scanning Function: No
- Best For: UV-VIS quantitative analysis
 
N4S
 
- Wavelength Range: 190–1100nm
- Scanning Function: Yes
- Best For: UV-VIS scanning + quantitative
 
N2
 
- Wavelength Range: 325–1100nm
- Scanning Function: No
- Best For: Visible quantitative analysis
 
N2S
 
- Wavelength Range: 325–1100nm
- Scanning Function: Yes
- Best For: Visible scanning + quantitative
 
Performance Specifications
 
Photometric Range
 
- 0.0–200.0%T
- -0.301–4.000A
- 0–9999C
 
Photometric Accuracy (N4/N4S)
 
- ±0.3%T
- ±0.002Abs (0–0.5A)
- ±0.004Abs (0.5–1A)
 
Photometric Repeatability (N4/N4S)
 
- ≤0.15%T
- 0.001Abs (0–0.5A)
- 0.002Abs (0.5–1A)
 
Stray Light
 
- ≤0.1%T (at 220nm NaI, 360nm NaNO₂)
 
Baseline Stability
 
- N4/N4S: ≤±0.003A (200–1090nm)
- N2/N2S: ≤±0.003A (335–1090nm)
 
Noise
 
- 100% (T) noise ≤0.5%T
- 0% (T) noise ≤0.2%T
 
Drift
 
- ±0.002 Abs/30min (after 2h warm-up)
 
Standard Accessories
 
- User manual
- Glass cuvette 1cm (4 pcs)
- Quartz cuvette 1cm (2 pcs) – for N4, N4S only
- Power cable
- Fuse (2 pcs)
 
Optional Accessories
 
- Built-in thermal printer
- UVWIN8 spectrum data processing software
- 50mm cuvette holder
- 100mm cuvette holder
 
Typical Applications
 
- Clinical examination and medical diagnostics
- Biochemical analysis
- Petrochemical and environmental monitoring
- Pharmaceutical quality control
- Food and beverage testing
- College and university laboratories