Ultra GAP™
ULTRA-HIGH PURITY GAMMA PHASE ALUMINA (Al₂O₃) POWDER
Our Ultra-High Purity Gamma Phase Alumina™ (Al₂O₃) Powder (Ultra GAP™) is a finely engineered product with a guaranteed purity of over 99.995% (4N5), with a high degree of customisation.
Our Ultra GAP™ is designed with superior quality and precision in mind. With bespoke particle-sizing and customisable specific surface areas, this product caters to the specific requirements of our clients across various high-tech industries.
UNITS | ULTRA GAP_JM | ULTRA GAP_UM | |
Description | Ultra-High Purity Gamma-Phase Alumina | ||
Chemical Formula | Al₂O₃ | ||
Crystal Structure | γ | γ | |
Purity | % solid | 4N5 - 99.995% | |
Uranium (U) & Thorium (Th) | ppb | <1 | |
Processing | Milled | Unmilled | |
Particle Size Distribution (PSD) | d50 | 2 - 3μm | 300μm |
Loose Bulk Density | g/cm³ | 0.1 - 0.2 | 0.2 - 0.3 |
Tapped Bulk Density | g/cm³ | 0.1 - 0.25 | 0.25 - 0.35 |
Specific Surface Area (BET) | m²/g | 100 - 350 | 100 - 300 |
Impurity Panel (76 elements - GDMS) | <40 PPM | ||
SEM IMAGERY
ULTRA-HIGH SURFACE AREA ULTRA GAP
ULTRA-HIGH SURFACE AREA JET MILLED ULTRA GAP


HAVEN'T FOUND THE PRODUCT THAT FITS THE SPECIFICATIONS YOU'RE LOOKING FOR?
Our product development team bespoke engineer products for your requirements.
THE VERSATILITY OF OUR
ULTRA GAP™ FOR INDUSTRY APPLICATIONS
CATALYSTS APPLICATIONS
Our Ultra GAP™ is a top choice for demanding catalysis applications, thanks to our novel ability to manufacture ultra-high surface areas (to >350m2/g), thermal stability, and unique pore structure that make it an ideal support material.
LITHIUM-ION BATTERY APPLICATIONS
Our Ultra GAP™ has emerged as an effective cathode coating material, able to deliver novel, cathode performance benefits, particularly for high nickel chemistries.
PHARMACEUTICALS APPLICATIONS
Our Ultra GAP™ is already used in a range of demanding applications in medical and pharmaceutical where ultra-high purity materials are essential.

Get In Touch
Contact us today to discuss your project needs and how Alpha HPA’s products can provide the solution for your manufacturing requirements.






