NUCLEAR GRADE RESINS

Gravex® is a complete product line of high-purity, quality-certified cation, anion and mixed bed ion exchange resins.

These custom-blended bead resins are the cleanest bead available, washed and classified, every batch tested and samples filed for future reference.

They are processed to meet nuclear specifications. We offer the most conclusive results available for nuclide removal products. Graver Technologies also supplies bead resin manufactured by Dow, Rohm & Haas and Lanxess (Bayer).

These Gravex Nuclear Grade Ion exchange resins are very high capacity polystyrene, gel type resins. They have been regenerated and processed to provide the highest possible performance in nuclear applications. The Gravex cation is specially processed to minimize leachable sulfonic acids.

Its high capacity and oxidative stability help achieve optimal performance. Gravex mixed beds are the most uniformly blended products available and have the same consistent cation to anion ratio in every package. Our unique blending process creates the less separable GR-3-16 NG stoichiometric mixed bed. A 7Li+ form cation is available as GR-7-16 NG and in the GR-4-7 NG mixed bed.

Proven Technology for the Most Challenging Separations

Graver Technologies wold leaders in condensate polishing

Powdex® Powdered Resins

Powdex® PAO Series

Powdered strongly basic hydroxide form anion exchange resin
Highest possible conversion to hydroxide form with very high purity
Mixed at point of use with Powdex PCH or PCN to form larger agglomerates
Then precoated on Aegis® wound and DualGuard® precoat septa and others in precoat filtration systems known as Powdex filter demineralizers
Rapid kinetic performance with excellent hydraulic properties providing simultaneous ion exchange and solids filtration
Excellent precoat uniformity essential for proper performance

Typical Applications

Nuclear BWR & PWR condensate polishing
Nuclear BWR reactor water cleanup
Fossil condensate polishing

Click here to download Powdex® Selection Guide.

NANODEX

NANODEX FILTER PAPERS TRACK SYSTEM AND PLANT PERFORMANCE by Monitoring Radionuclide and Corrosion Products

Graver’s patented Nanodex Ion Exchange Filter Papers enable diverse quantitative analyses in the power industry, especially nuclear, to monitor corrosion products, measure activity levels and satisfy fuel warranty requirements.

Nanodex AX 100 anion exchange filter disks contain strongly basic, quaternary ammonium functional sites in the chloride form, which can be converted to the desired ionic form (i.e. hydroxide) as required.

Nanodex CX 200 cation exchange filter disks contain strongly acidic, sulfonic acid functional sites in the hydrogen form. Contact your Graver representative for more information about these innovative filter papers.

FEATURES

High performance, specialty hydrophilic paper for a variety of analytical requirements
Uniform resin distribution throughout each disk
Standard 47mm diameter
Highly functionalised, highest ion exchange capacity analytical filter
disks available
Filter disks are easily digested by standard analytical methods

BENEFITS

Excellent hydraulic characteristics
Consistent ion exchange capacity and utilization
Fit standard bench-top and inline filter holders and housings
Single disk used per test
Simple to quantify ions removed – X-ray fluorescence or Atomic Absorption

PDS Nanodex Filter Papers R1 Download

FOR OVER HALF A CENTURY GRAVER HAS BEEN THE LEADER IN CONDENSATE POLISHING (CP) FOR THE POWER GENERARTION MARKET.

Whether the need is for high purity Gravex® condensate polishing ion exchange resins; the original Aegis® wound, DualGuard® or AFA® pleated filter septa; or the Powdex & Ecodex® families of premium resins, the original and most widely used powdered ion exchange resins, Graver Technologies has the answer for your application.

Gravex bead resins for condensate polishing including the lowest residual chloride anion available for treating the most critical operating systems
Uniform size Gravex for regenerable deep beds
Less separable Gravex for non-regenerable systems
Powdex and Ecodex for simultaneous precoat filtration and deionization
Aegis precoatable filter septa for Powdex filter demineralizers
AFA, the first backwashable pleated filters installed in a condensate pre-filter system
DualGuard, combination pleated filter with a precoatable and easily backwashable surface