USP-1901A Double beam UV-visible spectrophotometer, 190~1100nm, 0.1/0.2/0.5/2/4/5nm

USP-1901A Double beam UV-visible spectrophotometer, 190~1100nm, 0.1/0.2/0.5/2/4/5nm

USP-1901A Double beam UV-visible spectrophotometer is used for basic absorbance measurement, quantitative and qualitative analysis, DNA and kinetic analysis, etc.

Instrument features

• Adopt low stray light and high-resolution optical path structure monochromator, which has good stability, reproducibility and accurate measurement readings.
• The variable slits can be set to 0.1/0.2/0.5/2/4/5nm to meet the requirements of different analytical test items for monochromatic bandwidth.
• Adopt the latest microprocessor technology, with control functions such as automatic setting of 0%T and 100%T, various methods concentration calculation and data processing functions, and also has special functions to prevent user operation errors, so you can use it without worries.

Technical Specifications

Model	USP-1901A
Optical system	1600/CT optical paths, diffraction grating
Slit bandwidth	0.1/0.2/0.5/2/4/5nm
Wavelength range	190~1100nm
Wavelength resolution	0.1nm, Optical focal length 350mm
Data display	Intelligent true color touch LCD display, clear display complete information. (Two-way operation: host + PC workstation)
Wavelength accuracy	±0.1nm(@656.1nmD2,±0.3nm(full wavelength range)
Wavelength repeatability	≤0.05nm(656.1nm)
Scan rate	High, medium and low speed are available, 4100nm/min
Stray light	≤0.01%T(Na1,220nm),≤0.0001%T(NaNO2,360nm);
Photometric range	-4-4.0ABS,-9999-9999C
Photometric accuracy	±0.2%T(0-100%T) ±0.002Abs(0-0.5Abs),±0.3%T(0-100%T)
Photometric repeatability	±0.15%T(0-100%T) ≤0.001Abs(0-0.5Abs),±0.15%T(0-100%T)
Baseline flatness	±0.0005A
Baseline drift	±0.0004ABS/h
Photometric noise	±0.0003A/h(500nm,0A,2nm)
Data output	U disk data output,wifi Email,Bluetooth, PDF,EXECL
Light source	imported light source (deuterium lamp, tungsten lamp)
Software	With GMP audit tracking function
Detector	Imported photomultiplier tube
Weight	25 kg
Dimensions	450*350*200cm

Instrument Interfaces

Time scan - kinetic measurement is also called time measurement. The user can measure the absorbance or transmittance of the sample solution at intervals (scanning intervals) within a certain scanning time range according to the sample set wavelength point, and can also convert the absorbance into concentration by inputting the concentration factor.

You can set a single wavelength absorbance or transmittance time scan to establish an absorbance (or transmittance)-time curve.

Basic measurement: Input wavelength to test the sample content value at the wavelength, and input sample content to test unknown samples.

Spectral scanning - the sample needs to draw an absorption peak within a certain wavelength, and automatically give the peaks and troughs of unknown samples (qualitative analysis).

Multi-wavelength measurement - refers to the need to measure the absorbance / transmittance /concentration of a sample at multiple wavelengths

Quantitative measurement - To conduct quantitative analysis of samples, multiple standard samples (more than two) can be used to establish a wavelength absorbance-concentration curve, and the concentration of unknown samples can be obtained from this curve.

Enter the known X, B values to measure the content of unknown samples.

DNA protein measurement

Measurement scheme 1: 260nm 280nm

Measurement scheme 2: 260nm 230nm

DNA/protein automatic measurement mainly measures absorbance at 260nm/280nm/230nm/320nm, and obtains DNA and protein concentrations according to the calculation formula.

DNA protein measurement results