The Bante WXG-4 disc polarimeter user manual provides operation steps, measurement procedure, technical specifications, and maintenance guidelines.
The WXG-4 disc polarimeter, manufactured by Bante Instruments, is a laboratory instrument for measuring optical rotation. It consists of a sodium‑lamp light source, polarizers, a semi‑transparent plate, and a graduated dial. The manual describes the instrument’s components, setup, and basic operating principle.
The guide walks the user through sample preparation, zeroing the instrument, taking measurements, and calculating average values. It also covers lamp replacement, routine maintenance, storage conditions, and warranty information. This manual is written in Chinese.
| Model | WXG-4 |
|---|---|
| Measurement range | -180° ~ 180° |
| Scale division | 1° |
| Vernier reading | 0.05° |
| Magnification | 3× |
| Wavelength | 589.44 nm |
| Test‑tube lengths | 50 mm / 100 mm / 200 mm |
| Stabilization time | ≈10 min |
| Power requirement | 220 V / 50 Hz |
| Dimensions (L×W×H) | 500 mm × 135 mm × 330 mm |
| Weight | 5 kg |
Rotate the scale handwheel until the field matches the zero‑point view, then read the dial value as the zero reference.
The sodium lamp should not be used for more than 4 hours continuously; after long use, power the instrument off for 10–15 minutes.