Not official USP-NF text
DIMETHYL SULFOXIDE
PF LGS# Brand Type of Test Additional Information
9(3) G25 SP-1000 Limit of . . . . . . . . . Limit of dimethyl sulfone
9(3) S1A SUPELCOPORT Limit of . . . . . . . . . dimethyl sulfone
0(0) G2 HP-1 Related compounds 0.32 mm x 15 m. Film thickness 3.0 µm