1. Suspensi bakteri.
1 ml suspensi bakteri + 9 ml aquadest steril  10-1
1 ml suspensi bakteri 10-1
+ 9 ml aquadest steril  10-2
1 ml suspensi bakteri10-2
+ 9 ml aquadest steril  10-3
1 ml suspensi bakteri 10-3
+ 9 ml aquadest steril  10-4
1 ml suspensi bakteri10-4
+ 9 ml aquadest steril  10-5