Aquasafe WSL50 Pro, Instruction Manual

Page: 42 / 193

SECTION 5: USE OF BACTERIOLOGICAL MEDIA
If stored correctly, the dissolved media should remain stable for 6-8 weeks.
However, if there are any signs of contamination e.g. yellowing, cloudiness
etc., discard.
Ideally, to reduce the possibility of contamination, use one bottle of media
only for a 24-hour period, and use a fresh bottle on each subsequent day.
However,
if this is not possible, then the bottle must be resealed
immediately after use. The media may be re-sterilised if required by boiling
in a water bath for 15 minutes.
Clean empty media bottles thoroughly before re-use. Any residues should
be washed out with hot water; cleaned with a little detergent (a small brush
can be used if required); rinsed several times in clean water, dried and
stored in a clean environment, with the lids lightly attached.
The MLSB solution may be applied to the pads up to 6 hours before
sampling, if the pads are subsequently stored in a cool environment. This
procedure can reduce the potential for contamination with excessive
operations in the field.
If the MLSB powder is stored in the original sachets in dry, cool conditions
it should have a shelf life of up to 5 years from the date of manufacture.