remel Mueller Hinton Agar w/4% NaCl w/6 mcg/ml Oxacillin, Ref R01626, 10/box. The firm name on the label is Remel, Lenexa, KS. || The product is a solid medium recommended for use in qualitative procedures to screen Staphylococcus aureus for resistance to penicillinase-resistant penicillins (PRP, e.g. methicillin, nafcillin, and oxacillin).