Lembar Perhitungan

B. Growth Rate (k) dan Doubling Time (tg)

tg= ln 2 / k

t-to (rabu-kamis)= 23,5 jam

t-to (kamis-jum’at)= 23 jam

1. WadukRabu-Kamisk = 10,55-10,367 = 0,0078 koloni/jam

tg = ln2/0,0078 = 88,99 jam

Kamis-Jum’atk = 10,55-10,55 = 0 koloni/jam

tg = ln2/0 = ~

2. Depan UndipRabu-Kamisk = 11,2-10,55 = 0,0276 koloni/jam

tg = ln2/0,0276 = 25,054 jam

Kamis-Jum’atk = 11,242-11,2 = 0,00183 koloni/jam

tg = ln2/0,00183 = 379,5 jam

3. Samping UnpandRabu-Kamisk = 11,78-11,4 = 0,016 koloni/jam

23,5

23

23,5

23

23,5

tg = ln2/0,016 = 42,856 jam

Kamis-Jum’atk = 11,83-11,78 = 0,002174 koloni/jam

tg = ln2/0,002174 = 318,78 jam

23