■Technical indicators and basic parameters

*Wavelength range: 200-800nm (usable up to 190-850nm)

*Wavelength accuracy: ±0.5nm

*Wavelength repeatability: ≤ 0.3nm

*Transmittance accuracy: ± 0.3% τ (0-100% τ)

±0.002A(0～0.5A)

±0.004A(0.5A～1A)

*Transmission density repeatability: ≤ 0.15% τ

*Stray light: ≤ 0.5% τ (NaI 220nm, 340nm NaNO2)

*Baseline linearity: ±0.005A（200～800nm）

*Stability: ≤ 0.005A/30min (at 500nm)

*Spectral bandwidth: Three levels of 0.5, 1.0, and 2.0nm

*Minimum sampling interval: 0.05nm

*Working mode: transmittance, absorbance, concentration, energy

*Absorption range:- 0.342～3A

*Detector: Imported photomultiplier tube

*Light source: imported deuterium lamp, tungsten lamp

*Power supply: AC 220V/50Hz 110V/60Hz

*Power: 200W

*Instrument size: 645×475×175mm

*Host weight: 39kg

■Instrument characteristics

Automatic wavelength scanning, automatic lamp replacement, automatic sampling pool, and three levels of spectral bandwidth selection; Automatically correct wavelength shift, automatically adjust energy, and deduct colorimetric dish pairing errors.

*Software: Chinese interface, user-friendly design, easy to operate.

*Spectral scanning: capable of scanning sample spectral curves within any wavelength range of 190-850nm; The minimum sampling interval is 0.05nm, with three speeds: fast, medium, and slow; Spectral analysis can be processed through differentiation, superposition, smoothing, scaling, peak valley detection, and other techniques.

*Fixed wavelength measurement: 10 wavelength points can be set simultaneously.

*Quantitative analysis: Standard coefficient method, standard control method, dual wavelength method, three wavelength method and other analytical methods can be applied.

*Dynamics measurement: minimum sampling interval of 0.1 seconds; Can perform activity calculation; DNA protein measurement

*Computer and Print Output System:

*Computer: Universal computer, Windows 98/ME/2000/XP system.

*Printer: Standard inkjet printer, optional laser, needle and other printers.