The air cleaner function deploys to get rid of rust, a dust, a oilmist.
Bio-micro has only the air cleaner function of the clean air system.


The filter material has been refurbished from the current activated carbon dust dust-proof filter to the multiple layer electret filter, which improves the dust-proof performance by 20% and the pressure drop by 44%.


Rust and oil absorbed by New Electret filter


A diving cylinder can retain small particles of dust, and oil residue. 
Inhaling these contaminants can be harmful to your body. 
New electret filter cartridge employed in the bio-filter and bio-micro efficiently removes impurities including rust, dust and oil.

(Photo: Inside of the old SCUBA tank.)

20% Improvement of collecting dust efficiency over the conventional cartridge.

The filter material is determined through measurements and evaluations of dust collecting performance of fine particles from 0.5um to 5um.
The high dust collection rate is achieved by the effect that the PM2.5 (the harmful particles of 2.5μm or less of ) is, of course , also oil mist distributed in the 0.5 ~ 5μm, are electrically be attracted by the electrostatic force of the electret fiber.
Nowadays this electret filter is commonly used with medical filters, exclusive air cleaners and automobile premium air conditioners.


With the new filter cartridge, the dust collection rate is further improved by 20% even compared with the conventional filter which also performs high dust collection rate with adoption of exclusive filter materials. No longer the conventional activated carbon filter is unnecessary. The new filter cartridge adsorbs whole fine particles, and block the most of rust and oil. 
(Measurement condition: Count number of particles by the particle counter of each particle size of the air which is filtered by the filter cartridge installed in the bio-filter.)


44% reduction of the pressure drop.

In general, the dust collection filter becomes a fine meshed as increase its performance , in proportion the increase of its performance, it will increase the pressure drop (resistance of the air flow). However, in the new electret filter cartridge , despite a 20% improvement of the dust removal performance compared with conventional models , it also reduce the pressure drop successfully by 44%. . This helps greatly to reduce the breathing resistance in extreme conditions , such as severe breathing in great depth , directly involved in the relief of mitigation and air consumption of fatigue.
(Measurement condition: Air flow 30L/min., At atmospheric pressure, the cartridge installed in the bio-filter)


Impact-obsorbing Mechanism


The bio-filter and 1st stage are protected by our unique impact-obsorbing Mechanism.


Material Chrome over brass (Silver color)
Port fitting 3/8" and 1/2" available
Outer diameter φ32mm
Total length 3/8" type-59.5mm 1/2"type-74mm
Weight 3/8"type-120g 1/2" type-136g
Accessories 2x Electret filter cartridge, 1x Clamp wrench, 1x Allen-key wrench
Nitrox compatible: Yes to 40% O2 when use new charcoal filter
Nitrox compatible Yes to 40% O2 when use new charcoal filter

About overhaul

The bio-micro needs overhaul at every one year or 100 dives.


Time to replace the electret filter cartridge.

The electret filter cartridge is a expendable supplies.
Usually replace it every 20 to 50 diving, or when the adhesion of dirt and oil can be seen on the surface.
It is also recommended to always carry and posses a spare electret filter cartridge.


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Apollo Bio Micro Filter 3/8"

  • Brand: Apollo
  • Product Code: Bio-Micro Filter
  • Availability: In Stock
  • $117.00
  • $99.00

Tags: Apollo, Bio-Micro, Clean, Air, System, Bio, Micro