Bioprocessing
Accelerate your biologic drug development with Praesto®
chromatography resins.

Accelerate your biologic drug development with Praesto®
chromatography resins.
As a global leader in resin technology, we develop and manufacture small beads that are used in the most regulated industries in the world to separate, remove or recover very specific elements and compounds.
Learn MoreWith 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 MorePolystyrenic Gel, Gel, Mixed Bed Resin, Hydrogen form, Hydroxide form, Separable, Ultrapure Water Grade
Our always-ready technical support and service teams go the extra step to be your most trusted resource. We're here for you.
Appearance | Spherical Beads | |
TOC (max.) | < 10 ppb TOC after 40 BV of rinse at 30 BV/h (*) | |
Resistivity | > 18 MΩ cm after 15 BV of rinse at 30 BV/h | |
Shipping Weight (approx.) | 685 - 725 g/L (42.8 - 45.3 lb/ft³) | |
Temperature Limit | 60 °C (140.0 °F) | |
Component Name | UltraClean Grade Gel Cation | UltraClean Grade Gel Type I Anion |
Polymer Structure | Gel polystyrene crosslinked with divinylbenzene | Gel polystyrene crosslinked with divinylbenzene |
Functional Group | Sulfonic Acid | Type I Quaternary Ammonium |
Ionic Form | H+ form | OH- form |
Cation / Anion Chemical Equivalent Ratio | 1 | 1 |
Total Capacity (min.) | 1.9 eq/L (H+ form) | 1.1 eq/L (OH- form) |
Mean Diameter | 610 ± 40 µm | 570 ± 50 µm |
Conversion (min.) | 99.9 % (H+ form) | 95 % (OH- form) |
Moisture Retention | 49 - 54 % (H+ form) | 55 - 62 % (OH- form) |
Uniformity Coefficient | 1.2 | 1.2 |
Footnote | * Influent rinse water quality : > 17.5 MΩ cm; < 2 ppb TOC |
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