Accelerate your biologic drug development with Praesto®
chromatography resins.
With 40 years of manufacturing expertise and 30 years of regulatory experience, we supply leading separation, purification and extraction technologies to support chromatography and biocatalysis applications in healthcare and life sciences.
(目前只有英文)
* 将PFCs降低到不可检测的水平，范围从1到5份/万亿
| 聚合物骨架 | 聚苯乙烯二乙烯苯交联 | |
| 外观 | 球状颗粒 | |
| 官能团 | 复合氨 | |
| 平均直径 | 675 ± 75 µm | |
| 均一系数（最大） | 1.3 | |
| 比重 | 1.05 | |
| 包装密度（大约） | 650 - 700 g/L (40.6 - 43.8 lb/ft³) | |
| 温度限制 | 100 °C (212.0 °F) (Cl-型) | |
| 温度限制 | 60 °C (140.0 °F) (OH- 型) | |
离子交换树脂的压降取决于粒度分布、床层高度、树脂颗粒间空隙体积，以及物料的流速和粘度。 任何对这些参数的影响-比如被树脂床层截住的颗粒物、对树脂床层的异常压缩、床层的不规则分布-都会对压降产生不利影响，造成压头损失。 针对不同的物料质量、应用环境和系统设计，流速可能处于10 – 40 BV/h范围内变化。
A 20 BV downflow rinse is required before the vessel is put into service. This rinse can be done onsite or offsite pre-installation. Once the resin is put into service, backwashing is not permitted as this will lead to shortened bed life. This is a uniform grade resin with beads of similar size and will not require backwashing for classification / stratification before use. If it is determined, before startup, that air bubbles or particulate matter are trapped within the bed, then backwashing can be done. In that case, the resin bed should be expanded by 50-70% for 10-15 minutes. Please note that bed expansion increases with higher flow rate and lower water temperature. Avoid loss of resin through the top of the vessel by over expansion of the bed.
