L7 Series Double Beam UV-VIS Spectrophotometer – 8" Touch Screen, High Precision, Full Spectrum

The L7 series is a high-performance double beam UV-VIS spectrophotometer designed for laboratories requiring precision and reliability. Featuring an 8-inch color touch screen, Czerny-Turner monochromator, and blazed holographic gratings, it delivers outstanding accuracy for both qualitative and quantitative analysis.

🔧 Key Features

Advanced Optical System

• Double beam optical design with Czerny-Turner monochromator
• 1200 lines/mm blazed holographic grating for high resolution
• 1.8nm spectrum bandwidth
• Silicon photocell detector for stable performance
• Wavelength range: 190–1100nm (full spectrum coverage)

Intuitive Touch Screen Interface

• 8-inch color capacitive touch screen
• User-friendly interface with powerful functions
• Multi-language support for global users

Versatile Analysis Functions

• Full-spectrum scanning
• Detailed spectrum scanning
• Time-based kinetics determination
• GOTO λ (wavelength setting)
• Linear regression and concentration direct reading
• Peak/Valley detection
• Multi-wavelength measurement

Data Management & Connectivity

• High capacity internal memory – stores test results, scanned images, regression equations, and correction data
• Fast initialization with power protection system
• USB COM port for direct PC connection
• Optional UV WIN8 spectrum data processing software
• Optional thermal plotter for printing results and curves

Reliable Performance

• Wavelength accuracy: ±0.5nm
• Wavelength repeatability: ≤0.2nm
• Stray light: ≤0.03%T (at 220nm NaI, 360nm NaNO₂)
• Photometric range: 0.0–200.0%T, -0.301–4.000A, 0–9999C
• Baseline stability: ≤±0.002A (200–1090nm)
• Drift: ≤0.0009 Abs/30min (after 2h warm-up)

📋 Technical Specifications

📦 Standard Accessories

• Operation manual
• Glass cuvette 1cm (4 pcs)
• Quartz cuvette 1cm (2 pcs)
• Power cable
• Fuse (2 pcs)

🔧 Optional Accessories

• UV WIN8 spectrum data processing software
• Thermal plotter/printer

🔬 Typical Applications

• Research laboratories
• Quality control and analytical testing
• Pharmaceutical and biomedical analysis
• Environmental monitoring
• Food and beverage testing
• Chemical and material science

❓ Frequently Asked Questions

Q: What is the minimum order quantity (MOQ) for the L7 series?
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 L7 series spectrophotometers come with a 12-month warranty against manufacturing defects.

Q: What is the advantage of a double beam spectrophotometer?
A: Double beam design automatically compensates for light source drift and wavelength drift, providing superior baseline stability and more accurate measurements over time compared to single beam instruments.

Q: Can I connect the instrument to a PC?
A: Yes, all models feature a USB COM port for direct PC connection. Optional UV WIN8 software provides advanced data processing and spectrum analysis capabilities.