Shanghai Jingke 722N Visible SpectrophotometerBasic principle:
The spectrophotometer analysis method is based on the selective absorption of electromagnetic radiation by substances with different molecular structures.
The visible spectrophotometer is typically used in the electromagnetic radiation spectrum range of 325nm to 1000nm.
The use of microprocessor control technology for qualitative and quantitative analysis of substances in the visible spectral region is an essential multi-purpose analyzer in conventional laboratories.

characteristic:
Adopting advanced holographic scintillation grating monochromator, it has the advantages of high wavelength accuracy, good monochromaticity, and low stray light.
◆ Large screen with backlit LCD display, allowing for easy access to measurement data.
Adopting a microcomputer measurement system, the T-A conversion accuracy is high, and it has automatic adjustment of 0% (T) and 100% (T), concentration direct reading, and concentration factor setting.
High measurement reading accuracy, good reproducibility and stability.
◆ Optional serial printer and can be used in conjunction with software UVWin7 to expand the functionality of the instrument.
UVWin7 software package (purchased separately).

Main technical indicators:
◆ Wavelength range: 325nm to 1000nm
Maximum allowable error for wavelength: ± 2nm
◆ Wavelength repeatability: ≤ 1nm
Maximum allowable error for transmittance: ± 0.5% (T) (measured with NBS930D)
◆ Transmission specific gravity repeatability: ≤ 0.2%（T）
Spectral bandwidth: 4nm
◆ Stray light: ≤ 0.5% (T) (measured as NaNO2 at 360nm)
Stability: Dark current drift: 0.2% (T)/3min Bright current drift: 0.5% (T)/3min