YANTAI STARK INSTRUMENT CO., LTD.

The L8 double beam UV-Vis spectrophotometer applies a new optical bench, with 5-speed adjustable bandwidth, 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

● New optical platform, enabling the host machine with excellent optical properties, metering performance, low stray light and noise, high metering accuracy and stability.
● 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.
● Sophisticated hardware and software design, empowering the instrument with powerful spectral data processing and storage capabilities, and performing following functions,including automatic scanning of measured spectrum, multi-wavelength (1-3 λ) measurement, kinetic measurement, 1-3 curve fitting, 1-4 derivative spectra, spectra printing and storage and data analysis.
● 8-inch color touch-screen, with a good user-machine interface, easy-to- operate.
● USB communication port.

Specificatons

Photometry:     Double Beam

Monochromator Type:    Czerny-Turner

Focal Length:    200mm

Grating:    1600 lines/mm

Detector:     Silicon Photocell

Spectrum Bandwidth:    1nm or 2nm

Wavelength Setting:     8-inch color touch-screen

Wavelength Range:    190-1100nm

Wavelength Accuracy:    ±0.3nm（actual test ±0.2nm ）

Wavelength Repeatability:    ≤0.1nm

Scanning Speed:    Fast-Medium-Slow

Stray Light  :     ≤0.02%T( at 220nm NaI, 360nm NaNo2 )

Photometric Range:     0.0-200.0% T

-0.301-4.000 A

0.000-9999 C

Photometric Accuracy:    ±0.3% T

  ±0.002 Abs (0-0.5A)

  ±0.004 Abs (0.5-1A)

Photometric Repeatability:    ≤0.15% T

     0.001 Abs (0-0.5A)

        0.002 Abs (0.5-1A)

Baseline:     ≤±0.0008 A(200-1090nm)

Noise:    100%（T）noise≤0.1%(T) ， 0%（T）noise≤0.02%(T)

Drifting:    ≤0.004 Abs/h (250nm and 500nm after 2h warm up)

COM Port:    USB

Light Source:    Hamamatsu D2 lamp，Osram halogen tungsten lamp

Power:    AC220V±22V 50Hz±1Hz, 200W

Packaging Size:    730mm X 630mm X 450mm 0.21M³ 42.5kg

Standrad Accessories

● Operation manual 1
● Glass cuvette 1cm 4pcs
● Quartz cuvette 1cm 2pcs
● Power cable 1
● Fuse 2pcs

● Cuvette holder 10mm

Optional Accessories

● UV WIN8 Spectrum data processing software
● Thermal Plotter
● Cuvette holder 100mm
● Cuvette holder 50mm