Waters Ubondapak Phenyl Guard-Pak Insert, 125a, 10 Um, 10/Pkg

If your method calls for µBondapak packings, there is only one µBondapak packing material. Many companies claim to have columns with µBondapak-like selectivity but not one has ever passed Waters stringent QC batch test. Waters set the standard for reproducible, high-performance chromatographic columns. Waters µBondapak columns are still the most widely referenced and requested columns in the world.