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Internal flow sanitizers: active ingredients Suppliers Dilution
Quaternary ammonium: Benzalkonium chloride (between 0.25–0.5%)
Poly(hexamethylene biguanide) hydrochloride (between 0.1–0.25%)
Consult our local
technical service
Ready to use
Sodium Hypochlorite (2.6% active chloride) N/A 250 ppm
hydrogen peroxide (6%) Consult our local
technical support
Ready to use
Isopropyl alcohol (N°CAS 67-63-0 10%)
Didecyldimethylammonium chloride (N°CAS 7173-51-5: 0.15936%)
Consult our local
technical support
Ready to use
Note: Sanitizers containing acetic acid at 0.1% or higher should not be used for internal
flow sanitization because of chemical incompatibility.
4.3 Filtration head cleaning
Remove the filtration heads and clean
them using a wipe moistened with a
surface sanitizer listed in the cleaning &
maintenance section, then put them back in
place.
4.4 Pump surface cleaning
Clean the exterior of the pump, the tubing
and the cable using a wipe moistened a
surface sanitizer listed in the cleaning &
maintenance section.
4.5 Pump rinsing
If samples other than water have been
processed, filter 300 mL of purified water at
the end of each day. This is recommended to
ensure the functionality of internal parts.
Use either a Milliflex Oasis
®
filtration unit
or the internal flow sanitization kit with a
sanitization funnel assembly to perform the
rinsing.
4.6 Filtration head external
gasket cleaning
• Remove the external gasket, then clean it
including its groove using a wipe moistened
with a surface sanitizer listed in the cleaning
& maintenance section, then put the gasket
back in place.
Figure 32: external gasket removal
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