EN 1650 Quantitative Suspension
for Fungicidal Activity
Test Purpose
The European standard, EN 1650,
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 fungal cells
under conditions defined by the
standard. The method described
is intended to determine the
activity of commercial
formulations or active
substances on fungi in the
conditions in which they are
used.
Test Summary
A test suspension of fungi 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
fungicidal and/or fungistatic
activity is immediately
suppressed by dilution or
filtration neutralization. The
number of surviving fungi in
each sample is determined
standard culture plating
techniques and the reduction in
viable counts is calculated.
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