EziLab offers the UV-Visible Spectrophotometer EZL-US117, a single beam UV meter with deuterium and tungsten-halogen lamps and a silicon photodiode detector. A 1200 lines/mm grating scans 190–1100 nm at a fixed 2 nm bandwidth with ±0.5 nm wavelength tolerance, while photometric readings span -0.3 to 3 A and 0–200 %T at ±0.5 %T. Stray light stays at or below 0.05 %T at 220 and 360 nm, drift holds within ±0.002 A per hour at 500 nm, and baseline flatness sits at ±0.0015 A. A four-position cell holder takes sample sets, the dot-matrix LCD and solvent-resistant alphanumeric keypad run fully automated scans, USB and parallel ports feed PCs and printers, while the pre-aligned deuterium lamp swaps out without adjustment. Pharmaceutical QC departments, biochemistry labs, clinical chemistry units, water testing stations, teaching colleges and general research groups use this UV-Vis spectrophotometer for daily absorbance work. Common tasks include API assay by absorbance, protein and nucleic acid estimation, colorimetric water tests, enzyme activity reads and student practical sessions. Choose it over the double beam sibling when budget and simplicity outrank long-run baseline tracking. Single beam means re-zeroing on the blank each time the wavelength changes, a step to time against any method that reads at several wavelengths. Compare it with Spectrophotometer listings, where Single Beam UV-Visible Spectrophotometer holds its closest relatives.
| Wavelength Range | 190 nm – 1100 nm |
|---|---|
| Spectral Bandwidth | 2 nm |
| Optical System | Single beam (1200 lines/mm grating) |
| Wavelength Accuracy | ±0.5 nm |
| Wavelength Repeatability | ±0.5 nm |
| Photometric Display Range | -0.3 – 3A, 0 – 200%T, 0 – 9999C |
| Photometric Accuracy | ±0.5%T |
| Photometric Repeatability | 0.3%T |
| Stability | ±0.002A/h @ 500 nm |
| Baseline Flatness | ±0.0015A |
| Stray Light | ≤0.05%T @ 220 nm, 360 nm |
| Noise | ±0.001A |
| Cell Holder | 4 single cell holder |
| Display | LCD (128×64 Dots) |
| Lamps | Deuterium and Tungsten Halogen lamps |
| Detector | Silicon photodiode |
| Data Output Port | USB |
| Printer Port | Parallel port |
| Packing Dimension (W×D×H) | 57×45×31 cm |
| Gross Weight | 13 Kg |
| Feature Area | Description |
| Compact Optics | Compact optics scan across the full wavelength range of the instrument. |
| Lamp Replacement | A pre-aligned deuterium lamp can be swapped without tools. |
| Keypad Entry | A solvent-resistant keypad with alphanumeric entry handles names and units. |
| USB Storage | USB data output and storage move results to a PC. |
| Single-Beam Operation | Single-beam operation keeps the build simple, with re-zeroing on the blank after a wavelength change. |
