Compressed air detection for oil, water, solid particles, and microorganisms

Compressed air detection for oil, water, solid particles, and microorganisms

Compressed air detection for oil, water, solid particles, microorganisms, compressed air, and nitrogen is used in many applications across various industries, especially,In the clean room, use compressed gas to operate equipment and clean the manufactured products. Meanwhile, compressed air is a great power source with excellent application performance, clear and transparent, convenient transportation, non condensing characteristics, and no special harmful properties. Compressed air can be used to drive various pneumatic machinery, pneumatic valves, control instruments, automation devices, and as a process medium. Due to the impact of the cleanliness of compressed gas on clean rooms and manufactured products, untreated compressed air contains a large amount of moisture, dust, wear particles, bacteria, and even deteriorated lubricating oil. All of these pollutants mix together to form a dirty and corrosive sludge, which is usually acidic and rapidly wears down pneumatic equipment, clogs valves and vents, and corrodes pipeline systems, endangering the inherent quality of drugs. Therefore, it is necessary to treat the moisture, oil content, and dust of compressed air, and quantify the levels of particles, microorganisms, and oil-water content to meet production needs.

In the "Good Manufacturing Practice for Drugs"（GMP）Article 25 clearly states that“Dry air, compressed air, and inert gases that come into direct contact with drugs should be purified and meet production requirements”All public facilities that affect product quality (such as pure steam, compressed air, nitrogen, etc.) should be validated and monitored according to daily monitoring plans, and the microbial limits of compressed air should be determined based on product risks

Compressed gas detection for oil, water, solid particulate matter, and microbial detection items:

Moisture content, oil content, suspended particle count, microorganisms

Compressed gas detection for oil, water, solid particles, and microorganismsApplication SettingsPrepare:

High pressure air collector

Dust particle counter;

Floating bacteria sampler+Sampling hood

Drager(Delger)Aerotest AlphaCompressed air quality tester

Compressed gas detection for oil, water, solid particles, and microorganisms

Compressed air solid particulate matter/Dust particle testing:First, convert the compressed air into atmospheric pressure air.Particle counter startup preheating5Connect the sampling port to the self-cleaning port using a hose in minutes for self-cleaning(Wipe and disinfect with alcohol swab)Connect the high-pressure separator to the compressed air sampling point, blow gas for a period of time to stabilize it, and after the particle counter self purifies, connect the sampling port to the high-pressure separator for sampling. Adjust the flow rate and set the sampling period. Press the print button, and the print indicator light will turn on, indicating that the measurement results can be automatically printed after the detection cycle ends.

Compressed air living microorganisms/Floating bacteria test:First, convert the compressed air into atmospheric pressure airSampling planktonic bacteria sampler+Sampling hood test. Translate into English(Wipe and disinfect with alcohol swab)Connect the high-pressure separator to the compressed air sampling point, blow gas for a period of time to stabilize it, disinfect the planktonic microorganism sampler, and connect it to the high-pressure separator for sampling. Set the sampling period(Its cycle is set according to the cleanliness level)After sampling, mark the culture medium petri dish and place it in the incubator for cultivation(30℃～35℃)at least48hAfter the cultivation is completed, count the number of bacterial colonies.

Compressed air moisture content detection methodCompressed air passes through a water vapor detection tube using a compressed air detector. If there is water vapor present, the display layer will change color to reddish brown. The water content in the compressed air can be determined based on the range of color change.

Compressed air oil content detection method:Delger compressed air quality tester equipped with Delger oil detection box（Simple and PracticalConnect the compressed air quality tester to each usage point and flush the compressed air quality tester with compressed air at least3minute(flow velocity4L/min)Afterwards, push the oil box into the adapter. Measure for a duration of5In minutes, remove the protective film from the oil box and read the concentration of the oil.