滤膜
Membrane Filter
Whatman径迹蚀刻膜是使用专利技术制造的高精密膜，膜内孔径尺寸分布窄，孔径一致性高。脂质体中常用这一系列的Cyclopore聚碳酸酯膜和Nuclepore聚碳酸酯膜。聚碳酸酯膜是亲水性的，可以选择不同的孔径规格和尺寸规格。
Whatman Polycarbonate Membrane Filters are high-precision membranes with narrow pore size distribution and high pore size consistency. Cyclopore polycarbonate membranes and Nuclepore polycarbonate membranes are commonly used in this series. Polycarbonate membranes are hydrophilic and can be selected with different pore sizes and Dimension sizes.
Whatman Cyclopore聚碳酸酯膜是真正的孔径微孔膜，具有轨道蚀刻膜过滤器的尖锐截止和可重现的微滤特性。
Whatman Cyclopore polycarbonate membranes are true pore size microporous membranes featuring the sharp cut-off and reproducible microfiltration characteristics of track-etched membranes.
特性和优点
Features and Advantages
Low affinity for stains improves visibility under a microscope
Negligible absorption and adsorption of filtrate; nonhygroscopic
Low tare weights
Biologically inert
Biologically inert
技术参数
Technical Paramete
| 厚度 Thickness | 7-2µm |
| 质量 Quality | 0.7-2.0mg/cm² |
| 最高使用温度 Maximum operating temperature | 140℃ |
| 孔隙率（孔隙体积） Pore volume | 4-20% |
| 灰分 Ash content | 0.6µg/cm² |
| 高压蒸汽灭菌 Autoclaving | 30min/121℃ |
| 透明度 Transparency | 半透明 |
| 比重 Specific gravity | 1.21g/cm² |
| 可燃性 Flammability | 缓慢燃烧 Burn slowly |
| 纤维脱落 Fiber shedding | 否 No |
| 渗滤性 Percolability | 忽略不计 Ignore |
| 生物相容性 Biocompatible | 惰性 |
