Adopt blazed holographic gratings. Have outstanding test precision and very competitive price. Cutting-edge user interface, powerful functions, and easy operation.

With powerful functions, the equipment shows great performance in qualitative and quantitative testing , such as :

◆ Full spectrum scanning ◆ Linear regression

◆ Detailed spectrum scanning ◆ Concentration direct reading

◆ Time-based kinetics determination ◆ Peak/Valley detecting

◆ Multi-wavelength measurement ◆ GOTO λ

● Specifications

Model	L7
Monochromator type	Czerny turner
Focal length	160mm
Wavelength Range	190-1100nm
Band Width	1.8nm
Wavelength Accuracy	±0.3nm
Wavelength Repeatability	≤0.01nm
Photometric Display Range	0.0-200 .0% T / -0.301-4.000 A / 0.000-9999 C
Photometric Accuracy	±0.3% T(0-100%T) / ±0.002A(0-0.5A) / ±0.004A(0.5A-1A)
Photometric Repeatability	0.15% T(0-100%T) / ±0.001A(0-0.5A) / ±0.002A(0.5A-1A)
Photometric Mode	T,A,C,E
Stray Light	≤0.03% τ (220nm NaI, 360nm NaNO2)
Stability	0.0005A/h@500nm
Detector	Import Silicon Photodiode
Scanning speed	Fast-medium-slow
Power Requirement	AC220V±22 50Hz±1Hz,200W
Dimensions(WDH)	746345cm&35kg
Baseline Flatness	≤0.002A(200-1090nm)
Grating	1200 lines/mm
Drifting	≤0.0009 Abs/30min(250nm and 500nm after 2h warm up)
Noise	100%(T)≤0.15%(T); 0%(T)≤0.1%(T)
Standard Accessory	Quartz Cuvette 10mm2pcs; Power line; Fuse 2pcs; Manual

L8/L9

Double Beam UV VIS Spectrophotometer

The L8/L9 double beam uv vis spectrophotometer applies a new optical bench, with 5-speed adjustable bandwidth (L9 only), ARM chip control and data processing,

8 inch color touch - screen which displays menu and spectral curve and can analyze spectrum test data. It’s quite easy for user and computer interaction.

The instrument can perform following operations, including photometry, automatic scanning spectral measurement, quantitative analysis, dynamic analysis,

and multi-wavelength measurement.

The instrument serves as the basic equipment for quality control, technical evaluation and scientific research, and can be widely used in susceptibility testing,

medicine and health, biochemistry, environmental monitoring, commodity inspection, petrochemical and other fields.

Main Features:

1.New optical platform, enabling the host machine with excellent optical properties, metering performance, low stray light and noise, high metering accuracy and stability.

2. Unique system of deuterium and tungsten lamp installation, facilitating the light source to automatically switch to the best position, and allowing users to operate the instrument,

replace the light source and maintain the instrument more conveniently , accurately and safely.

3. Sophisticated hardware and software design , empowering the instrument with powerful spectral data processing and storage capabilities , and performing functions,

including automatic scanning of measured spectrum, multi-wavelength ( 1~3λ) measurement, kinetic measurement, 1~3 curve fitting, 1~4 derivative spectra,

spectra printing and storage and data analysis.

4.8-inch color touch screen, with a good user-machine interface, easy to operate.

5.USB Communication port.

Standard Accessories:

Main Machine 1 piece

Operation manual 1 piece

Quartz cuvette 1cm 2 pieces

Power cable 1 piece

Fuse 2piece

Optional Accessories:

UV WIN8 Spectrum data processing software

Specifications:

Model	L8	L9
Spectrum Bandwidth	2nm	0.5nm, 1nm, 2nm, 4nm, 5nm
Wavelength Range	190-1100nm
Monochromator Type	Czerny-Turner
Grating	1600 lines/mm
Detector	Silicon Photocell
Wavelength Accuracy	± 0.3nm
Wavelength Repeatability	≤ 0.1nm
Wavelength Scanning Speed	Fast, medium and slow
Light source Switching Wavelength	340nm
Stray Light	≤ 0.02% (measured by NaI at 220 nm) (measured at NaNO2 at 360 nm)
Photometric Range	0.0 ~ 200.0% T -0.301 ~ 4.000A 0.000 to 9999C
Photometric Accuracy:	± 0.3% T ± 0.002Abs (0 - 0.5A) ± 0.004Abs (0.5 - 1A)
Photometric Repeatability:	≤ 0.15% T 0.001Abs (0 - 0.5A) 0.002Abs (0.5 - 1A)
Baseline Flatness	≤ ± 0.0008A(200-1090nm)
Noise	100%(T) noise ≤ 0.1% (T), 0% (T) noise ≤ 0.02% (T)
Baseline Drift	± 0.0004 Abs / h (250nm and 500nm after preheat warm up for 2 hours )
Power	AC220v± 22v, 50Hz± 1Hz, 200W
Light Source	Hamamatsu D2 lamp, Osram halogen tungsten lamp.
COM Port	USB
Packing Size	740mm630mm450mm, 0.21m³, 35kg.

Address：#205, 2nd Floor, No.11, Yansha Road, NanPu, Luo Pu Street, PanYu District, Guangzhou City. China

Tel：+86-020-22042388

Phone:+86-15011719911

+86-15918899299

Mai：sales@mesulab.com

sales02@mesulab.com

mesulab@live.com

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