Arena Service Manual
and mucous membranes. The pH is approximately 9.5, which
makes Amuchina less alkaline than bleach. When Amuchina
breaks down, the result is sodium chloride and water.
Amuchina is stable for several years when kept in its
original container, and has good penetrating power due
to the presence of hypochlorous acid (HClO).
9.4.2 Dwell Chemicals
Dwell Chemicals require an extended exposure time in the
flowpath for disinfection. These chemicals are recirculated and
allowed to remain in the Instrument for a certain period of time.
Dwell chemicals approved for use in the flowpath are Actril,
Doxan, Dialox and formaldehyde. Only approved chemicals
should be used in the flowpath.
9.4.2.1 Actril, Dialox, and Doxan
Actril, Dialox and Doxan contain hydrogen peroxide, peracetic
acid, and acetic acid in different proportions. See Table 9-4.
Table 9-4. Actril, Dialox and Doxan Postdilution Composition
Component Actril Dialox Doxan
Hydrogen peroxide 1.00% 6.0 - 8.0% <20%
Peracetic acid 0.08% 0.1- 1.0%
≈1%
Acetic acid 5.20% 2.0 - 10.0% <10%
Prolonged dwelling may cause deterioration of the Instrument’s
components. They are good combination
disinfectants and
decalcification chemicals which decompose into oxygen, water,
and acetate which is easily metabolized in nature.
These chemicals oxidize the walls and components of the
microbial cell resulting in the neutralization and destruction of
micro-organisms with no possibility of adaptation or acquiring
resistance.
The presence of acetic and peracetic acids gives them their
descaling properties. A dialysis Instrument that is disinfected daily
with these chemicals should not require additional treatment with
an acidic descaling product such as vinegar.
Actril is not just diluted Renalin. Table 9-5 compares these two
chemicals. The key point here is that there is a very different ratio
of hydrogen peroxide to peracetic acid.
Table 9-5. Ratio of Hydrogen Peroxide to Peracetic Acid
9-16 157-1278-916, Rev A
March 2004
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