≥97% [HPLC]. Free 4MU < 100ppm.
Fluorimetric assay of lectin binding to yeast cells: Y. Oda et al., Anal. Biochem., 254, 41 (1997). For detection of faecal coliforms: J. D. Berg and L. Fiksdal, Appl. Environ. Microbiol., 54, 2118 (1988).
Suitable for use in EPA-821-R-02-024 (EPA method 1604).