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721S Vis Spectrophotometer

721S Vis Spectrophotometer

721S vis spectrophotometer

721S vis spectrophotometer is a compact, easy-to-use equipment. It can be used to measure transmission, absorption and concentration direct-reading at wavelengths from 360nm to 1000nm. 

721S vis spectrophotometer can be widely applied to departments related to medical health, clinical examination, biochemistry, petro-chemistry, environmental monitoring and quality control as qualitative and quantitative analyses.

vis spectrophotometer 721S  Specifications
Optical system
Diffraction grating C-T monochromator
Wavelength range
360nm～1000nm
Source lamp
halogen lamp 10W/8V
Wavelength accuracy
±3.0nm
Wavelength repeatability
≤1.5nm
Transmittance accuracy
±0.8 %(t) (SRM930D)
Transmittance repeatability
≤0.3 %(t)
Spectrum bandwidth
 ≤6nm
Stray light
≤1.0 %(t) (360nm, NaNO2)
Power supply
90～250V, 50/60Hz, 40W
vis spectrophotometer 721S  Main Features

· 4-digit LED display

· Reasonable structure with advanced optical system, using precision machining high-quality CT monochromator and sealed grating, the optical properties of which are superior to the traditional LITTROW monochromator, with obvious advantages in the indicators such as resolution, photometric accuracy, stray light and stability. And its size is smaller. 

· Special precision pre-adjustment lamps and lamp holder fittings. Not necessary to re-adjust optical path for installation which is convenient for users without any professional maintenance skills.

· Precision-linkage cutoff filter system automatically switching to appropriate wavelength filters, further reducing stray light 

· Sample cells made of special engineering plastics, resistant to solvent as well as strong acid/alkali, which enhances its anti-corrosion properties. Effusion dish and liquid storage container, which can be removed and cleaned, are mounted on the bottom to increase the service life.

· 4-position cell holder, with optional rectangular optical path colorimetric dish with diameter from 1 cm to 5cm. 

· Automatic zero and 100%T adjustment 

· Concentration factor setting and concentration direct-reading functions

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