DLS90 Domestically Developed Nanoparticle-Size Analyzer
纳米粒度仪DLS90是通过动态光散射技术，表征颗粒大小 and 分布的一种仪器。贝拓科学自主研发的国产纳米粒度仪DLS90是一款基于伤处原理研发的纳米颗粒粒度表征分析仪。分散在液体中的颗粒由于受到液体分子的热运动撞击而进行不规则的布朗运动。在相同环境下，颗粒尺寸越小，布朗运动越剧烈，对应颗粒的扩散行为越明显。当一束激光照射到这些颗粒时，其散射光的强度会由于颗粒的布朗运动而随机变化，且变化的快慢与颗粒布朗运动的快慢有关。通过特定的光子Related Categories器可直接测量散射光强的变化快慢，进而可知颗粒布朗运动的扩散系数，再利用Stokes-Einstein公式即可计算得到颗粒的粒径及其粒度分布。
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Overview
Specifications
| Parameter | Value |
|---|---|
| Measurement Range | 0.7nm-10um |
| Accuracy | Better than±2% |
| Repeatability | Better than±2% |
| Sample-Cell Volume | 4ml |
| Sample-Cell Temperature-Control Range | 15~50°C |
| Scattering Angle | 90° |
| Laser Source | Semiconductor Laser (35mw/635nm) |
| Detector | Photon-Counting-Grade Photomultiplier Tube |
| Correlator | 1000通道，小100ns采样时间 |
| Computer Interface | USB2.0 or Later |
| Voltage | AC220V、50/60Hz |
| Environmental Requirements [Noncondensing] | Temperature5–80°C; Humidity0–90%; Noncondensing |
| Instrument Dimensions | 440 mm × 360 mm × 210 mm |
| Instrument Weight | ~20Kg |
| Correlator Physical-Channel Count | 1000 channels |
| Photon-Counter Channel Configuration | Dual Channel |
| Temperature-Control Accuracy | 0.5°C |
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Key Features
Datasheet
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