Description
Spectrophotometry is often used in measurements of enzyme activities, determinations of protein concentrations, determinations of enzymatic kinetic constants, and measurements of ligand binding reactions. The use of spectrophotometers spans various scientific fields, such as physics, materials science, chemistry, biochemistry,Chemical Engineering, and molecular biology.
Feature
1. High stability: Czerny-Turner type dual beam optical system reduces chromatic aberration and ensures long-term data stability
2. High precision: using a micrometer-scale precision lead screw to drive the grating to ensure wavelength accuracy <±0.3nm; transmittance accuracy is ±0.3%T, accuracy reaches Class I level
3. Easy to use: 5.7-inch large-screen LCD display, map, curve at a glance, simple and convenient operation, quantitative, qualitative, dynamic, DNA / RNA, multi-wavelength analysis and other special test procedures
4. Long service life: original imported xenon lamp, tungsten lamp, ensuring long life of 2 years, receiver life of up to 20 years
5. A variety of accessories: automatic sampler, micro cell holder, integrated ball diffuse reflection, 5 ° specular reflection and other accessories, to meet special requirements
Function
1. Photometric measurement: It is convenient to measure the absorbance and transmittance of the sample at the specified wavelength. The fixed-point test can test up to 10 wavelengths at the same time.
2. Quantitative measurement: automatic establishment of standard curve, first-order / first-order zero-crossing, second-order, third-order curve simulation 3. Qualitative measurement: scanning speed 3500nm / min, map processing methods, including, scaling, smoothing, filtering, peak Valley detection, etc.
4. Kinetic measurement: calculation of enzyme kinetic reaction rate, scaling, smoothing, filtering, peak-to-valley detection, derivation, etc.
5. DNA/RNA, protein testing function, automatic calculation of sample ratio and concentration
Specification
| Model | LU-1810D | LU-1810DS |
| Optical system | CT type double beam optical system, 1200 strip / mm holographic grating splitting focal length 280nm | |
| Wavelength range | 190-1100nm | |
| Spectral bandwidth | 1.8nm | 0.5,1,2,4,5nm adjustable |
| Wavelength accuracy | ±0.3nm | |
| Wavelength repeatability | ±0.1nm | |
| Transmittance accuracy | ±0.3%T๏ผ±0.002Abs๏ผ0-0.5Abs๏ผ; ±0.004Abs๏ผ0.5-1.0Abs๏ผ | |
| Transmittance repeatability | ±0.1%T๏ผ±0.001Abs๏ผ0-0.5Abs๏ผ;±0.002Abs๏ผ0.5-1.0Abs๏ผ | |
| Stray light | ≤0.03%T, at 220nm and 360nm | |
| Noise | ±0.0004Abs | |
| Drift | ±0.0008Abs๏ผ500nm, after pre-heating๏ผ | |
| Baseline flatness | ±0.0008Abs | |
| Baseline dark noise | 0.05%T | |
| Luminosity range | 0๏ฝ200%T/-4๏ฝ4A/0๏ฝ9999C๏ผ0-9999F๏ผ | |
| Light source | imported tungsten lamp and deuterium lamp | |
| Scanning speed | high/ medium/ low three speed adjustable | |
| Display | 320X240nm Graphic LCD | |
| Data output | USB interface, Centronics parallel port (optional HP, Epson compatible laser, inkjet printer and micro printer) | |
| Power supply | 90-250V/AC,50-60HZ | |
