Product Overview
PL-490 bridges the gap between our standard high-purity grades and the absolute maximum purity of PL-390. For many advanced applications—particularly in electronics assembly, pharmaceutical formulation, and specialty chemicals—the 490 ppm ash level provides adequate protection against process contamination while offering a more favorable cost structure than ultra-premium grades.
The manufacturing process for PL-490 emphasizes raw material traceability and process control over post-production washing. This preserves the natural pore structure and surface chemistry, delivering adsorption kinetics that can exceed heavily washed grades.
Key application areas
- Electronics assembly and testing — wash water and process fluid purification
- Pharmaceutical formulation — excipient and ingredient water treatment
- Specialty chemical production — high-value product protection
- Medical device manufacturing — rinse water and cleaning solutions
- Laboratory and analytical services — consistent water quality for sensitive methods
Premium Grade, Practical Value
PL-490 offers near-ultra-purity performance:
- Traceable Feedstock Control: Source-level selection and process monitoring achieve 490 ppm ash without destructive washing
- Native Surface Chemistry: Preserved functional groups enhance selective adsorption of polar organics and trace contaminants
- Mechanical Integrity: Columnar extrusion resists attrition in high-service-factor beds, minimizing fines carryover into downstream units
- Cost-Optimized Purity: Delivers electronics-grade protection at a differential below PL-390 for applications where 490 ppm meets specification
