30 mL plastic disposable vials are filled with 15 mL of Modified Cary-Blair transport medium, containing phenol red indicator.
This isotonic nonnutritive medium will preserve the viability of delicate pathogens (such as shigella and campylobacter) preventing overgrowth by commensal organisms.
A change in color of the indicator from red to yellow will indicate an overgrowth and improper storage of the specimen.
Enteric pathogen survival for 96 hours and longer
Leakproof screw cap with collection spoon
The ParaPak C&S must be stored at room temperature.