The cartridges used in CSR filters fall into two main categories:

• Drier cartridges: • CSR48: Compact cartridges made of zeolite, providing a highly selective 3Å molecular sieve. • CSR48A: Includes 20% activated alumina, offering acid‑neutralizing capability. • CSR48AA: Further enriched with 5% activated carbon, suitable for burn‑out and system cleaning applications.

• Mechanical cartridges: • MFC48: Cartridges constructed with a metal mesh and perforated sheet, incorporating a porous membrane capable of retaining solid particles larger than 20 μm. • MFC48S: Cartridges featuring stainless‑steel mesh combined with metal fabric and expanded metal, designed to retain solid contaminants larger than 120 μm.