N4/N2 Series UV-VIS Spectrophotometers – 7" Touch Screen, 4 Models from Basic to Scanning UV

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

📐 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

❓ Frequently Asked Questions

Q: What is the difference between N4/N4S and N2/N2S models?
A: N4 and N4S models cover the full UV-VIS range (190–1100nm) and are ideal for applications requiring UV measurements. N2 and N2S models cover the visible range (325–1100nm) and are more economical for visible-light applications. S models add full wavelength scanning and kinetic time scanning capabilities.

Q: What is the minimum order quantity (MOQ)?
A: 1 unit is available for testing and evaluation. Volume discounts are available for multiple units.

Q: What is the typical delivery time?
A: In-stock instruments ship within 1-3 days from our logistics center in Asia via DHL/FedEx/UPS. Delivery to most countries takes 2-4 business days after dispatch.

Q: Do you provide installation and training?
A: Yes, we provide remote installation support and can arrange on-site training for qualified partners.

Q: What is the warranty period?
A: All N4/N2 series spectrophotometers come with a 12-month warranty against manufacturing defects.

Q: Can I connect the instrument to a PC?
A: Yes, all models feature a USB communication port for direct PC connection. Optional UVWIN8 software provides advanced data processing capabilities.