One of the laboratory equipment, water-lubricated air compressor

The precision equipment used in the laboratory requires relatively high gas, and "oil-free compressed air" is a necessary gas. "Water lubricated air compressor" is one of the essential equipment. In the process of laboratory construction, the gas used in different laboratories is diverse.

The overall ventilation system of the laboratory is essential and cannot be ignored for special gas distribution systems

laboratory gas is mainly non-combustible gas (nitrogen, carbon dioxide), inert gas (argon, helium, etc.), flammable gas (hydrogen, carbon monoxide); highly toxic gas (fluorine, chlorine); combustion gas (oxygen) composition. Other gases except non-combustible gases and inert gases shall not be used in the laboratory.

"Water lubricated air compressor" can compress some special process gases, such as argon, nitrogen, coalbed methane and so on! Also known as: argon air compressor, nitrogen air compressor, coal bed gas air compressor.

as one of the important fields in the biomedical industry, the clean area or clean room required for aseptic production is divided into four levels according to the standard requirements, namely A, B, C and D.

Class A clean area, which belongs to high-risk operation area, including filling area, rubber stopper barrel placement area, open packaging container placement area directly contacting with sterile preparation, and operation area for assembly or connection operation under sterile conditions. Such area shall be equipped with one-way flow operation table (cover) to achieve the purpose of maintaining the environmental state of the area. Uniform air supply is required for the unidirectional flow system in its working area, and the wind speed is recommended to be controlled within the range of 0.36~0.54 m/s; verification activities shall be carried out for the operation state of unidirectional flow, and record documents (including test data) shall be provided; lower wind speed can be set and used in relatively closed isolation operator or glove box.

Class B clean area refers to the surrounding background-related area of Class A clean area for high-risk operations such as aseptic preparation and filling.

Class C and D clean areas, which refer to the clean areas required for relatively low-level operation steps in the sterile production process of drugs.

The verification of the clean area level of the medical workshop shall comply with the following basic principles:

(1) The certification of clean area level should include "static" and "dynamic" standards.

(2) Pre-test work shall be carried out before verification, generally including air flow or flow rate test, envelope leak test, filter leak test, air pressure test, etc.

(3) The number of sampling points is set to the square root of the area of the clean area or clean room (rounded to the nearest integer).

(4) The sampling amount of each sampling point is as small as the sampling amount = 20/Cn · m × 100 according to each sampling point (Note: Cn · m is the grade limit value of the larger considered particle size specified by the relevant grade). In addition, it is also necessary to satisfy that each sampling point is as small as a sampling amount of 2L, and the sampling time is greater than or equal to 1min.

(5) When the area is only required to be a sampling point, the point should be sampled ≥ 3 times.

(6) In order to effectively verify the cleanliness level of Class A clean area, the sampling volume of each sampling point shall not be less than 1m & sup3;.

(7) When verifying the cleanliness level, a portable dust particle counter with a shorter sampling tube should be used to prevent suspended particles ≥ 5.0 μm from settling in the long sampling tube of the remote sampling system. In a unidirectional flow system, an isokinetic sampling head should be used.

(8) Dynamic testing can be carried out during routine operation and medium simulation filling operation to prove that the dynamic cleanliness level is achieved, but the medium simulation filling test should require dynamic testing under "poor conditions.