Transporter swab with amies gel, and without charcoal, features a dual plastic shaft, rayon swab tip, and blue cap.

• Unique tube shape preserves gel media
• Maximum gel for anaerobe preservation
• Available with or without charcoal
• Double plastic shaft
• Regular rayon tip

Amies media is Stuart's original media formula modified by replacing the glycerophosphate in the original formula for an inorganic phosphate buffer. The metabolism of glycerophosphate by coliform organisms and other Gram negative rods, in Stuart's original formulation, resulted in proliferation of these organisms from throat, wound, and fecal specimens. Amies also found that NaCl at 0.3% w/v was optimal for the preservation of Neisseria gonorrhoeae. Calcium and magnesium salts were added in the belief that these ions were of importance in controlling the permeability of the bacterial cells and contributed to their survival.