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E.coli is a pathogenic is drink water bacteria on freshwater environments, and in human gut as the
normal flora. E.coli growth more from fresh hold on the human body has become a danger for healthy
and illness. The imperative murder of E.coli is thoroughly on a routine microbiology laboratory from all
media associated with E.coli. This study aims to look at the survival of E .coli in physiology water (PZ)
or nutrient broth (NB) by exposure magnetic induction of solenoid partially liquid immerse and exposed
ultrasonic.   
In PZ or NB, that concentration of E.coli is 4 oses, identic ½ Mc Farland. The ultrasonic exposure
is using two frequencies  and two intensities in 30 minutes. The detection of E.coli culture is measuringby
spectrophotometer, that in different wave length (PZ = 600 nm and NB = 620 nm).
Conclusion: (1). Value % T between aquadest versus PZ no E.coli, no exposure was 100 % : 99 %.
(2). Compare between PZ  no E.coli, no exposure versus PZ  contain E.coli with  exposure in section
frequency intensity 48 kHz is 100 % E.coli dead, but in 24 kHz in section intensity 3 Vdc is E .coli
inactive. (3). Value % T between NB no E.coli,  no exposure versus NB contain E.coli with exposure in
same periodic times with organoleptic observation had different phenomenon ie. E.coli in NB with
magnetic induction had more stationary condition.
Discussion: E.coli in PZ is dead, because PZ is conductor liquid and ultrasonic is very fast change
ionic. E.coli in NB is a stationary grow, because NB is isolator liquid so it’s have a comfortable for life,
that psychological phenomena for E.coli.

Key Word: Ultrasonic, Induction magnetic, Solenoia, E.coli, Spectrophotometere

Keywords: Ultrasonic, Induction, solenoids, E.coli, turbidity.