9. Disinfection
Chemical % of Chemicals
Dissolved in Water*
Ratio of Hydrogen
Peroxide to Peracetic
Acid
Actril 1.00% hydrogen
peroxide
0.08% peracetic acid
12.5:1
Renalin 20% hydrogen peroxide
4% peracetic acid
5:1
*Information from the Material Safety Data Sheet (MSDS)
NOTE
Baxter has not tested the disinfection effectiveness of Renalin in
the Arena Instrument. The use of Renalin can accelerate damage
to the fluid path components.
9.4.2.2 Formaldehyde
Formalin is a solution containing 37% to 55% by weight of
formaldehyde gas in water with 10 to 15% methanol added to
prevent polymerization. It is only as corrosive as water. It can
penetrate into most areas where bacteria grow (AAMI, 1990, pp.
81-94). Current Intelligence Bulletin 34 (U. S. Department of
Health and Human Services, National Institute for Occupational
Safety and Health, April 1981) cited formaldehyde as a possible
carcinogen source and specifying controls used to limit worker
exposure. Formaldehyde should not be left inside the Instrument
for more than 30 days or crystalization may occur.
9.4.3 Automated Chemical Disinfection
The Instrument provides the operator with Instrument dilution
ratio, timed infusion, recirculation and dwell (if applicable), and
forced rinse appropriate for the disinfecting chemical. The type(s)
of chemical disinfectants can be selected by the service technician
(see Section 17.3.2).
To access the fluid path disinfection controls, touch the RINSE
MENU button. The date, time, method, and type of disinfection of
the last complete automated fluid path disinfection (heat and
chemical) are displayed in the Last Disinfection Data Report. To
access the chemical disinfection controls, touch the CHEMICAL
MENU button.
157-1278-916, Rev A 9-17
March 2004