Description

The ASTRA brand extends new line of the ARION® HPLC columns. What new bring this column to you?

• Strict quality control of alkaline and heave metals content during silica gel production process (<10 ppm)
• Narrow particle size and pore volume/size distribution
• Unique production process ensuring high lot-to-lot reproducibility
• High end-capping in gaseous phase

Main particle characteristics:

• High proximity to the circle
• Surface smoothness
• Tight particle size distribution
• No broken particles
• No presence of clustered particles
• No “Moon craters or mountains”

Aplications on Astra® HPLC columns are available at ARIONCHROMATOG­RAPHY

ASTRA® C18-HE Silicagel
Endcapping	in gaseous phase
USP	Code L1
Mean particle diameter	3.0±0.7 μm
Surface area	340 m2/g
Carbon load	17%
Proximity to the shape of Circle	0.96±0.04
Temperature stability	100 °C
pH stability	2.0 to 9 (depends on buffer used)

Note: Temperature stability depends on mobile phase used and silica bonding