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菌(jun)種(zhong)(zhong)(zhong)保(bao)(bao)(bao)存(cun)管主要由保(bao)(bao)(bao)存(cun)液、保(bao)(bao)(bao)存(cun)管和小瓷珠三部分組(zu)成(cheng)，它是一(yi)(yi)種(zhong)(zhong)(zhong)實驗室保(bao)(bao)(bao)存(cun)菌(jun)種(zhong)(zhong)(zhong)的(de)容器，用于(yu)(yu)菌(jun)種(zhong)(zhong)(zhong)的(de)保(bao)(bao)(bao)存(cun)或(huo)者轉移(yi)，一(yi)(yi)般菌(jun)種(zhong)(zhong)(zhong)保(bao)(bao)(bao)存(cun)管內(nei)有25顆小瓷珠用于(yu)(yu)細(xi)菌(jun)的(de)吸附(fu)和保(bao)(bao)(bao)存(cun)。使用過程中(zhong)(zhong)，將細(xi)菌(jun)接種(zhong)(zhong)(zhong)在(zai)保(bao)(bao)(bao)存(cun)管內(nei)，放置于(yu)(yu)-20℃或(huo)-80℃環境(jing)中(zhong)(zhong)可長期保(bao)(bao)(bao)存(cun)。（-20℃可保(bao)(bao)(bao)存(cun)一(yi)(yi)年，-80℃可保(bao)(bao)(bao)存(cun)兩年）。