Whatman 10328170 Filter Paper, Grade 740E, 12.7mm Circle, 1000/pk

Grade 740-E Special-Purpose Filter Paper^ 1.27cm diameter. Thick, absorbent cotton linter for use as an antibiotic assay test disc. Specified in standard tests for antibiotic susceptibility as well as antibiotic levels in milk. Coarse porosity. Fast flow rate. 20-30um particle retention. Also, check out for Advantec 49005020 Other Filters PAPER DISK 8MM 1000/PK