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Air Sampler MAS-100
EMD Millipore MBV MAS-100 Microbial Air Sampler Monitor
This air sampler is in beautiful condition and works well. The battery pack was just rebuilt with new components that perform better than the original. The unit has not been calibrated in several years.
There is increasing need for effective air sampling in all areas where airborne micro-organisms may contaminate or otherwise effect industrial products and processes. Monitoring is especially important in:
- the pharmaceutical industry
- the food industry
- hospitals
- the cosmetics industry
- the environment
The MAS-100 aspirates 100 liters of air per minute, allowing up to 2000 liters to be sampled per cycle. This performance enables sampling to be carried out according to the strict conditions of monitoring in sterile and “clean” areas [1].
The impaction velocity (speed at which airborne micro-organisms hit the surface of the agar) is approximately 11 meters per second, corresponding to stage 5 of the Andersen Sampler [3]. This velocity guarantees that all particles > 1 µm are collected. Comparisons with other methods of air sampling [2] have not revealed any significant differences in the number of micro-organisms collected.
The MAS-100 is a high-performance instrument that is based on the principle of the Andersen air sampler [3], which aspirates air through a perforated plate. The resulting airflow is directed onto a standard Petri dish containg agar. After the collection cycle, the Petri dish is incubated and the colonies counted. The MAS-100 operates with a high-performance suction device, and the aspirated volume is continuously monitored. The system measures the inflow of air and regulates the aspirated volume to a constant value of 100 liters per minute. The MAS-100 automatically regulates this volume if there are external factors preventing a steady flow of air, or if overfilled Petri dishes are blocking or impeding flow. The sampling time should not exceed 10 minutes, or the agar surface may show signs of dehydration.
The following new features have been incorporated into units with serial number 75000 and above:
- No need to open the unit in order to calibrate it
- Easy calibration using the new DA-100 digital anemometer
- Reports and results can be downloaded to a computer
- Choice of operation: manual sampling or computer mode sampling
- Preset volumes freely configurable between 0 and 2000 liters
- Preset volumes not needed can be deactivated (blanked from the display)
- New environmentally friendly NiMH rechargeable batteries
- Calibration reminder can be set for between 1 and 12 months
- New K5 calibration value for range calibration
- Start delay can be deactivated if not needed
- Now features data communication for automatic record-keeping
- Manual mode allowing for additional testing outside the computer records
- No need to validate agar plates for air tests, if already in use for other microbiology tests
- Built-in anemometer guarantees reproducible results (compensation feature)
- Different filling volumes in Petri dishes do not affect airflow (anemometer feature)
- Low airflow detection
- Real time clock and calendar
- Compact and easy to use
- Easy to calibrate
- Automatic calibration reminder
- Adjustable sampling head
- 100/240V, 50-60kHz power unit, or battery operation
- Isokinetic measurement (unidirectional airflow with 0.45 m/sec horizontal velocity)
Frequently asked questions
How are you?
About the same, thanks for asking.
So what's included in your listing?
Everything you see in the pictures and nothing you don't.
Anything else?
I'll throw in a box.
Oh, a smart guy, eh?
In case that's not rhetorical: I'm no expert, and I'm certainly not
smart enough to know about everything that passes my way. I do my best
to evaluate the things I sell, but often defer to the superior knowledge
of the prospective buyer.
Will you ever learn?
Probably not.
What’s with your hair?
Um…wait, what?
What if the item I buy from you doesn't work?
You have 30 days from receipt to return it for a refund if it doesn't do as I describe.
What if I don't like the color?
Then you have 14 days.
If I tell you how crappy and obsolete your item is in a
condescending enough tone, will you do me the favor of selling it to me
for a fraction of your asking price?
You sure know how to butter a guy up. No.
I didn’t bother to read your description. Can you fill me in on the details?
Sure. Send a stamped self-addressed envelope to: mehoff58, c/o eBay, Internet.
Can I pick up my winnings in person?
I don't know you well enough to know your capabilities.
OK, may I?
Certainly!
I need your item, so lower your price.
Not really a question. Nope, not a question at all.
I bought this gadget from you 5 months ago and just found out it doesn’t work. Will you refund my money?
30 days is my limit. I can’t afford to keep large stores of cash handy
for long warranties on used equipment. Besides, I don’t know how you
stored it or handled it or if it was damaged in shipping. Anyway, no.
Did I forget anything?
What am I, a mind reader?
Will you discuss these imaginary conversations with your psychiatrist?
The conversations are quite real, it's you who are imaginary.
You just blew my mind.
Who said that?
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