UVC Bio-Kit
Bioaerosol Sampling System
UVC Bio-Kit: Bioaerosol
Bioaerosol is a component of Particulate Matter (PM) in the atmosphere and consists of airborne particles that have a
biological origin.
Bioaerosol is a mix of:
- Microorganisms (viruses, bacteria, fungi and their spores, algae and protozoa);
- Pollen;
- Fragments of animals, insects, plants;
- Derived substances (toxins and allergenes) produced by any living species.
Airborne microorganisms including some pathogens in indoor air may cause different types of diseases or adverse health effects on humans. Among different air disinfection techniques, ultraviolet germicidal irradiation (UVGI) has been used for several decades to effectively inactivate the airborne microorganisms in indoor air and hereby prevent the transmission of a variety of airborne infections.
The International Standard ISO 15714 describes the test methods to evaluate the UV dose to airbone microorganisms transiting in-duct ultraviolet germicidal irradiation devices.
In duct UVGI devices are a primary form of air disinfection method by UV lamps mounted in heating, ventilation and air-conditioning (HVAC) systems to irradiate the microorganisms in air with high intensities.
- Health;
- Air Quality;
- Clean Rooms.
UVC Bio-Kit: Complete test and components
Method of evaluating the UV dose to airborne microorganisms transiting in-duct ultraviolet germicidal irradiation devices.
Aerosol Generator
(Cod. AC99-120-0000SP)
- Generating Aerosol from all kinds of liquids,suspensions and solutions;
- Integrated pump (no compressed air required);
- Adjustable Nebulyzing and dilution air (dry) flow;
Andersen Cascade Impactor (ACI) 6 Stage viable
(Cod : AC99-120-0002SP)
- Functioning principle: inertial impaction;
- Required Flow: 28,3 l/min (1 CFM);
- Direct sampling on 90 mm petri plates;
- Made of corrosion resistant material.
Irradiation Aerosol Chamber (in-duct UVGI)
(Cod. AC99-120-0009SP)
- Galvanized steel or aluminium;
- Sampling port (Andersen impactor inlet);
- Microorganism injection port (aerosol generator inlet);
- Ventilation fan grid.
Sampler with Automatic Flow Control
(Cod. AC99-000-0740SP) Bravo X R Bio [differential pressure]
- Automatic flow regulation;
- Flow range: 0.5 to 70 l/min;
- HEPA filter (pump exhaust) included.
UVC Bio-Kit
The UV dose is the product of UVC irradiance and specific exposure time on a given microoganism or surface.
The longer the time a microbe is exposed to UV light, the higher the UV dose it will receive. In a UVGI air disinfection device, the UV dose to every single microbe is different.
Therefore the average UV dose can be determined by the INACTIVATION RATE and a known microbial susceptibility.
Inactivation rate is expressed as N0/N (%) or log (N0/N) , where N is the active microorganism concentration, and N0 the original active microorganism concentration.
Irradiation chamber includes a blower, a damper, a HEPA filter before the duct, and upstream duct with test microorganism injection port, a UVGI device mounting duct, a downstream duct with sampling port an off-glass pipe with HEPA filter.
In order to perform a complete test, UV-C BioKit allows the measurements and control of air flow rates, air temperature, humidity and dilution concentration.
Test microorganisms have to be used for the test, like Serratia marcescens, Bacillus subtilis, Cladosporium Sphaerospermum. Safety consideration about UVC light and biological safety:
- ISO 15858:2016 specifies minimum human safety requirements for the use of UVC lamp devices.
- All test microorganisms are in BSL-1 defined by the CDC “Biosafety in Microbiological and Biomedial Laboratories” (BMBL).
UVC Bio-Kit: Product Codes
|
EQUIPMENT
|
CODE
|
|---|---|
|
Aerosol Generator Model DDS Aero
|
AC99-120-0000SP
|
|
Anderson Cascade Impactor 6 Stage (viable)
|
AC99-120-0002SP
|
|
Irradiation Aerosol Chamber
|
AC99-120-0009SP
|
|
Bravo X R Bio Sampler
|
AA99-000-0740SP
|