Microbial Air Sampler


Available in 3 models: HKM-III HKM-IIIA HKM-IIIB


Product Description

Air Flow100L/Min
Air Sample Volume10-6000 L
Air Flow SensorN/AN/AAutomatic compensation
Data TransferN/AHKM softwareHKM software
Programmed Loop SamplingYES
Mobile Phone AppletYES
Petri Dish Dia.90mm
Error Range2.50%2.50%2%
Shell MaterialSilver, blue aluminium alloy
Display3.5-inch HD LCD touch screen
BatteryRechargeable polymer lithium battery
(up to 8 hours of continuous use)
(Universal voltage lithium battery charger)


Microbial Air Samplers are used wherever there is a need to monitor and control microbial contamination
(e.g. clean rooms).
They are widely deployed in the pharmaceutical, dairy, clinical operation room and fermentation industries.
Also it is applicable in institutes that need study the air microbial condition.


This microbial air sampler works based on Andersen collision principle.
Air is aspirated (at a fixed speed for variable times) through small holes in the instrument’s head.
The resulting laminar air flow is directed onto the surface of an agar plate.
At the end of the sampling cycle, the plate is removed and incubated and the visible colonies are
then counted for an assessment of the level of contamination.

How to use:

1: Soak medical absorbent cotton in 75% ethanol, and use it to swab air sampler surface,
Petri dish pedestal and sampling head et al. 

2: Start the sampler and let it work not less than 5 minutes, making above mentioneddisinfector
esidue evaporate.

3: According to cleanliness requirements to set sampling parameters, then put Petri dish
(with medium) inside, and cover the multi-hole sampling head. 

4: Put the air sampler on flat surface 0.8-1.5m above the ground, and then start it begin sampling.


1. Automatic air flow compensation:

With built in real time air flow monitor sensor, automatically compensate air flow, avoid air flow divergence
aused by medium volume in Petri dish et al. ( HKM-II B only)

2. Constant sampling speed: 

Sampling opening wind speed almost same with clean room wind speed, which more accurately reflect
microbial concentration of the clean room, and optimizes impact speed, making false positive result get
controlled and guarantees microbial sampling efficiency.

3. User friendly interface:

Simple keypad making menu navigation easy, with all sampling information clearly displayed on LCD.
The LCD can also monitor sampling amount (0.01-6.0 m³). And user can easily set sampling place code,
sampling rate, language, time etc.

4. High efficiency: 

Not need to buy and use special test paper or filter membrane.

5. Adjustable sampling head:

Sampling head adjustable from horizontal to vertical, can meet multi-angle sampling requirements.
Also it is light enough to hold while sampling, or can be mounted on a tripod (tripod is optional by order). 

6. Data traceability:

Every sampling run generates a unique record, which is stored in the unit (holds up to 2000 records).
The data is easily accessed and read on the LCD. For HKM-II A and HKM-II B sampler, also built in software
which allows data to be downloaded to computer for reporting, printing and analysis.

7. Long battery life:

When fully charged, it can work up to 15 hours continuously using battery, which is high volume
rechargeable polymeric lithium battery, it has no memory effect, is safe and durable.

8. 95% sampling efficiency: 

Validation work according to BS EN ISO 14698-1:2003 Annex B and Annex C, as carried out by an
independent laboratory, which has shown the air sampler have a physical efficiency of 95% for particles
0.8 to 19.0 micron in size.

Related products