Stability and viability of Neisseria gonorrhoeae in various solutions and buffers

The stability and viability of Neisseria gonorrhoeae WP (T4) was tested in a variety of buffers and solutions, many of which are commonly used in gonococcal research. Each solution was tested at room temperature for its ability to maintain stability and viability of gonococci in concentrated suspensions and to maintain viability of gonococci in dilute suspensions. The 14 buffers and solutions tested could be divided into four groups based upon these criteria. Only a few solutions satisfied all three criteria. Of those tested, Gey salt solution and bovine serum albumin (0.01%) and proteose peptone (1%) in saline were the only two in which the gonococci retained viability in dilute suspensions for 25 min. Most of the solutions were not able to maintain viability of gonococci in dilute suspensions, even when the same solution was capable of maintaining stability and viability in concentrated suspensions.