1. The double-beam metering system, combined with the advanced circuit measurement and control system, makes the instrument highly stable and extremely low noise.

2. The newly designed excellent optical system and high-performance holographic blazed grating ensure the low stray light of the instrument, which enables the instrument to work stably at the full wavelength of four decimal places after the absorbance value (two decimal places after the transmittance value).

3. The fully automatic control system and advanced design concept ensure that the instrument has high reliability and high stability.

4. The sample room with detachable structure is easy to replace different accessories to meet different analysis requirements.

5. The design of spacious open light source room makes the light source replacement more convenient.

6. Imported components are selected for key parts to ensure high reliability of instrument performance.

7. The Chinese and English operating software developed under the Windows environment provides rich and unique color measurement analysis functions.

Instrument function

1. Photometric measurement: the transmittance and absorbance at 1~6 wavelengths can be measured simultaneously.

2. Spectral measurement: carry out spectral scanning of transmittance, absorbance and energy within the wavelength range, and carry out various data processing, such as peak and valley detection, derivative operation, spectral operation, etc.

3. Quantitative measurement: single-wavelength, dual-wavelength, three-wavelength and multiple-wavelength measurement of 1-9 point working curve (1-4 times) regression.

4. Kinetic determination: Time scan of transmittance and absorbance at any set wavelength and various data operations can be performed.

5. Data output: data files and parameter files can be accessed, and measurement results are output in standard and universal data file format.

Instrument parameters

Instrument model: T-UV1901

Wavelength range: 190-1100nm

Spectral bandwidth: 1nm

Wavelength accuracy: ± 0.1nm (at 656.1nm), ± 0.3nm full area

Wavelength repeatability: ≤ 0.1nm

Photometric accuracy: ± 0.002A (0-0.5A), ± 0.004A (0.5-1A), ± 0.2% T (0-100%)

Photometric repeatability: ± 0.001A (0-0.5A), ± 0.002A (0.5-1A), ≤ 0.15% T (0-100%)

Stray light: ≤ 0.02% T

Stability: ± 0.0004A (at 500nm)

Baseline straightness: ± 0.0004A

Working mode: T, A, C, E

Photometric range: 0-200% T, - 4-4A

Data output: USB interface

Printout: parallel port

Display system: 320 × 240-bit bright, large-screen LCD

Light source: imported long-life tungsten lamp, deuterium lamp

Detector: imported silicon photodiode

Weight: 24kg