Copan produces three different product lines that support anaerobic bacteria: M40 Tranysystem Unique Venturi hourglass tube design prevents disintegration or breakdown of gel column during specimen transport and it eliminates air pockets harmful to fastidious bacteria 5 ml deep gel column affords maximum specimen protection and improves sample viability No glass ampoules to break, no seals or barriers to puncture No dry swabs Capsulated environment in the bottom of the tube seals and protects bacteria Stringent QC of raw materials and finished product guarantees performance and very low level non-viable bacteria