UV757 UV Visible spectrophotometer
Host function:
Adopting a microcomputer measurement system, with precise conversion of τ - A, automatic adjustment of 0% (τ) and 100% (τ), equipped with GOTO λ, automatic 8-link sample holder, automatic deduction of colorimetric dish errors, concentration multi-point calibration, slope and intercept settings, and other functions. It has RS232 interface and parallel printing port (special for printing machines, optional separately).

Online function:
Through the RS232 serial interface, upper layer software can be used for full wavelength scanning, time scanning, concentration regression equations (once, twice, three times), multi wavelength testing, and greatly expand testing functions (except for host functions).

Technical indicators:
◆ Wavelength range: 200nm to 1000nm
◆ Light source: Tungsten halogen lamp 12V20W (imported) DD2.5 deuterium lamp (imported)
◆ Receiving element: photovoltaic cell
Maximum allowable error for wavelength: ± 0.5nm
◆ Wavelength repeatability: ≤ 0.2nm
Spectral bandwidth: 2nm
◆ Stray light: ≤ 0.3% (τ) (measured with Nal at 220nm and NaNO2 at 340nm)
Transmittance measurement range: 0.0% (τ) to 200.0% (τ)
◆ Absorption measurement range:- 0.301（A）～4.000（A）
◆ Transmittance maximum allowable error: ± 0.5% (τ)
◆ Transmission specific gravity repeatability: ≤ 0.2%（τ）
Noise: 100% noise ≤ 0.5% (τ) 0% noise ≤ 0.2% (τ)
◆ Stability: ≤ 0.004A/30min

UV757 UV Visible spectrophotometer
other:
Power supply: AC220V ± 22V 50Hz ± 1HzUV757 series UV visible spectrophotometer can perform qualitative and quantitative analysis of sample substances in the UV and visible spectral regions. This product can be widely used in departments such as medicine and health, clinical testing, biochemistry, petrochemicals, environmental protection, quality control, etc. It is one of the commonly used analytical instruments in physical and chemical laboratories.