EN 1276 Quantitative Suspension
for Bactericidal Activity
Test Purpose
The European standard, EN 1276,
describes a suspension-based,
quantitative, microbiology lab
test for establishing the
capability of a client's product
to produce a reduction in the
number of viable bacterial cells
of relevant microorganisms under
conditions defined by the
standard. The method described
is intended to determine the
activity of commercial
formulations or active
substances on bacteria in the
conditions in which they are
used.
Test Summary
A test suspension of bacteria is
added to a prepared sample of
the test substance and
interfering substance. At the
Sponsor specified contact time,
an aliquot is taken and the
bactericidal and/or
bacteriostatic activity is
immediately suppressed by
dilution or filtration
neutralization. The number of
surviving bacteria in each
sample is determined standard
culture plating techniques and
the reduction in viable counts
is calculated.
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