How often should Careguard® devices be replaced?
Careguard® has been submitted to endurance testing with the current
results showing no decline in antimicrobial efficacy after one year (simulated
usage, 13,000 gallons of fresh municipal water) but a partial decline after two
years (simulated usage, 26,000 gallons of fresh municipal water). An annual
replacement will maximize the efficacy of Careguard®. Factors that can negatively
affect the longevity of the antimicrobial protection include the water hardness
(hard water produces lime deposits which reduce the actual surface contact with
the antimicrobial) and the sulphur content of the water (sulphur can bind to silver).
Sulphur is more frequent in well water than municipal water and often causes a
noticeable rotten egg smell.
What happens if Careguard® spout-end devices are not
replaced often enough?
The antimicrobial efficacy will gradually reduce over time but in areas of
relatively soft water (non-liming) the stream quality and flow rate will be
unaffected for many years of usage. Even after the antimicrobial protection
has disappeared, Careguard® continues to produce a non-splashing laminar
(non-aerated) stream and to minimize lime build-up.
How long can Careguard® products be kept on the shelf?
The antimicrobial is active (releasing silver ions) only in water and
inert in dry conditions (silver is not released). Careguard® can therefore
be kept on the shelf for many months without any reduction of efficacy.