Bioprocessing (English only)
Accelerate your biologic drug development with Praesto®
chromatography resins.

Accelerate your biologic drug development with Praesto®
chromatography resins.
私たちは樹脂技術のグローバルリーダーとして、世界で最も規制の厳しい産業で、非常に特殊な元素や化合物を分離、除去、回収するために使用される小型ビーズを開発・製造しています。
もっと読む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.
Learn moreWe are a world leader in resin-based separation, purification and extraction technology, that provides sustainable solutions for our environment, businesses and healthcare.
Learn MorePolymer Structure | ポリアクリル系ジビニルベンゼン架橋樹脂 | |
Appearance | 球形ビード | |
Functional Group | アミドオキシム | |
Ionic Form | 遊離塩基 | |
銅交換容量 (最小) | 40 g/L | |
水分含有率 | 52 - 60 % (遊離塩基) | |
粒径範囲 | 300 - 1200 µm | |
< 300 µm (max.) | 1 % | |
均一係数 (最大) | 1.7 | |
可逆的膨張, FB → Cl- (最大) | 10 % | |
比重 | 1.19 | |
見かけ密度 (概算) | 740 - 790 g/L (46.2 - 49.4 lb/ft³) |
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.
The pressure drop across a bed of ion exchange resin depends on the particle size distribution, bed depth, and voids volume of the exchange material, as well as on the flow rate and viscosity of the influent solution. Factors affecting any of these parameters— such as the presence of particulate matter filtered out by the bed, abnormal compressibility of the resin, or the incomplete classification of the bed—will have an adverse effect, and result in an increased head loss. Depending on the quality of the influent water, the application and the design of the plant, service flow rates may vary from 10 to 40 BV/h.
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