Grade LS-222 Thick paper is perfect for blotting procedures; has the same absorbency characteristics as grade LS-238 except that it's about twice as thick to accommodate heavy blotting requirements. Ahlstrom 2228 series.
Grade LS-601 Medium thick paper with a medium flow rate. It's smooth & uniform surface is ideal as a gel drying support. Use as spacers in capillary & electroblotting sandwiches & paper chromatography. Ahlstrom 6018-4657 (614734).