Lark filter paper grade 42
GRADE 42 ASHLESS HARDENED
Filtration Speed of Lark filter paper grade 42- Slow Retention-crystalline, collects fine precipitates such as SrSo, BaSo, HgCrCo, and colloidal dispersion. Used for critical gravimetric analysis also. Particle retention up to 2.5um, alpha-cellulose content>98%.GRADE 42 Filtration Speed – Slow Retention-crystalline, particle retention up to 2.5 µm, alpha-cellulose content >98%, used in typical analytical preciprates include SrSo4 , BaSo4 , HgCrCo4 and colloidal dispersion, gravimetric analysis. GRADE 42 A world standard for critical gravimetric analysis with the finest particle retention of all cellulose filter papers. Typical analytical precipitates include barium sulfate, meta stannic acid, and finely precipitated calcium carbonate.
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