UV757CRT/UV757 series UV visible spectrophotometerDetailed product description：

1、 Product Description:

The UV757 series UV visible spectrophotometry is highly capable of qualitative and quantitative analysis of sample substances in the UV and visible spectral regions This product can be widely used in medical and health, clinical laboratory, biochemistry, petrochemicals, environmental protection, quality control and other departments, making it one of the commonly used analytical instruments in physical and chemical laboratories.

2、 Host function:

The UV757CRT/UV757 series UV visible spectrophotometer adopts a microcomputer measurement system, with precise T-A conversion, automatic adjustment of "0" and "100", GOTO λ, time scanning, and automatic sample rack connection,
Automatic deduction of colorimetric dish errors, multi-point calibration of concentration, setting of slope and loading distance, etc., with RS-232 interface and parallel printing port (printer specific, separate)
Option matching).
Online function: Through the RS-232 serial interface, upper layer software can be used for full wavelength scanning, time scanning, and concentration regression equations (once, twice, three times)
Multi wavelength testing greatly expands the testing function (in addition to the host function), providing a way to transmit test data to EXECL for users' post-processing requirements.

3、 Main technical indicators:

light source	Tungsten halogen lamp 12V20w (imported), DD2.5 deuterium lamp (imported); Receiving element: photovoltaic cell
Power supply	AC220V ±22V；5OHz ±1Hz
stray light	≤ 0.3% (τ) (at 220nm and 340nm);
Noise	100% noise ≤ 0.3% (T), 0% noise ≤ 0.2% (T)
stability	≤0.004A/30min
wavelength range	200nm~1000nm
Spectral bandwidth	2nm
Wavelength accuracy	± 0.5nm; (automatically calibrated upon startup)
wavelength repeatability	≤ 0.2nm
Transmittance accuracy	± 0.5%(T)
Transmission density repeatability	≤ 0.2% （T）
Range of absorbance display	- 0.301~4.000(A)；
Transmittance display range	0.0%(T)~ 200.0%(T)；