La description
The Mini-Chlorine Dioxide System
(MCS)
(patent pending) is the safest and one of the
fastest devices currently available for the
decontamination of biological safety cabinets. The
MCS saves
time and money, and eliminates the use of a carcinogen
(formaldehyde). The MCS uses chlorine dioxide
(CD) gas,
the only alternative to formaldehyde validated by NSF
International, the organization that establishes manufacturing
and usage practices for biological safety cabinets. Built into
the MCS is
a charcoal gas-scrubbing unit, allowing trained technicians to
safely remove chlorine dioxide gas from the target device after
decontamination, requiring no external venting or chemical
neutralization.
The
MCS is compatible with ALL
classifications, types and models of Biological Safety
Cabinets
This
includes: Class I's, Class II Type A1, A2, B1, B2 and Class
III's.
The MCS
treats volumes up to **0 ft2 (3.4m3), more than
sufficient for these and many other types of containment
devices.
The MCS provides complete
decontamination services in less than 4 hours,
including the setup and tear down of the BSC. This is a
very large improvement from formaldehyde, where the entire
decontamination process encompasses almost 2 work days.
As a result of validation studies performed
under the guidance of the NSF International
CD gas is the only
decontamination chemical alternative to formaldehyde included
within their biological safety cabinet document as a validated
decontamination method.
Why
Decontaminate BSC's?
Class I or Class II
(laminar flow) biological safety cabinets are designed to
minimize hazards inherent in work with biological agents. BSC’s
can be used for work with biological agents assigned to
biosafety levels 1 through 4, depending on the facility design
as described in the CDC/NIH publication Biosafety in
Microbiological and Biomedical Laboratories.A BSC is a
ventilated device for personnel, product, and environmental
protection having an open front with inward airflow for
personnel protection, downward HEPA filtered laminar airflow
for product protection, and HEPA filtered exhausted air for
environmental protection.
Recommendations and
requirements to certify BSC’s come from a variety of
sources. All manufacturers and NSF International recommend
field certification of BSC’s. The Center for Disease
Control (CDC) and NIH state that it is essential that Class I,
II and III BSC’s be tested and certified.
Decontamination is a key component of
certification.
NSF is responsible for
developing and issuing protocols for BSC decontaminations,
which are published in conjunction with CDC.
When are BSC Decontaminations
Required?
-
Decontamination shall be
performed when maintenance work, filter changes, or performance
tests require access to any contaminated portion of the
BSC
-
Decontamination shall be
performed prior to relocation
-
Decontamination shall be
performed prior to decommissioning, disposal or
salvage
-
Decontamination may be
performed after gross spills of biological agents
-
Decontamination may be
performed if a product contamination is linked to the
BSC
-
Decontamination may be
performed prior to initiating a totally different work program,
production runor study and shall be performed at
the completion of a work program, production run or
study
MCS
advantages over
formaldehyde
-
The kill rate of
CD is significantly greater
than that of formaldehyde, reducing contact time from
at least *2 hours to less than 2 hours.
-
The CDprocess does not leave a
residue. This considerably reduces labor
requirements following the typical formaldehyde
decontamination.
-
The cycle time for a
decontamination, from sealing to reopening the containment
device, is reduced from over *7 hours to less than
3 ½ hours. This allows the possibility of
decontaminations to be performed in the morning, with servicing
completed the same afternoon, eliminating a second trip to the
site.
-
Formaldehyde is a carcinogen. Chlorine Dioxide is
not.
Packaging for the
field service
technician
-
The MCS is packaged in a single
case in which all items can be stored. This
includes attachments, tools, tapes and all support
supplies.
-
The case has an
extendable handle and rolling casters. The
rotationally-molded wheeled case is manufactured from
durable polyethylene with a full-length heavy-duty piano hinge,
cable lid stays, military-style recessed latches and
spring-loaded handles, tongue-in-groove aluminum valances, and
padlock provisions if let on a site overnight.
-
Universal intake / exhaust
sealing panels, supply / return ducting lines, port /
round duct adapters and a humidifier are supplied for
all styles of
BSC's.
Essence of
the MCS for the field service
technician
-
A
humidity source, humidity meter, and biological indicator
(optional) are the only items placed within
the BSC to be
decontaminated.
-
The BSC is
then sealed, incorporating into the seal a gas inlet and outlet
port for use with the MCS.
-
No
other tubes, wires or other need to be run into the
BSC.
-
After
appropriate humidity has been achieved, CD-producing and
neutralization chemicals are added to the MCS, and the decontamination
cycle begins.
-
After an
exposure with a duration of *5 minutes, CD gas is removed from
the BSC using the scrubbing cycle of the MCS.
-
After
approximately *5 minutes, the MCS is disengaged from the BSC
and the BSC may be unsealed.
Advantages of the MCS for the field service
technician
-
The MCS.
recirculates humidity and the decontamination gas through the
BSC with or without the aid of the BSC's internal air
circulation blower(s). For the Class II type B2 the
MCS is the
circulation source for the entire decontamination
process
-
The
MCS.
circulates humidity and the decontamination gas through the BSC
upstream and downstream exhaust HEPA filter plenum's,
eliminating the “dead leg” BSC problem, with or without the aid
of the BSC's internal air circulation
blower
-
Gas
tight sealing panels for the introduction of the
decontaminating gas include a port that feeds through a
power cord to energize a humidity generator within
the BSC.
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MCS-Auto 3
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