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Microbiology laboratory design [industry standard]

Sep 14, 2018

Shenzhen Chuangmei Industrial Co., Ltd., a professional microbiology laboratory design company, consists of six parts: preparation room, washing room, sterilization room, sterile room, constant temperature culture room and general laboratory. The common feature of these rooms is that the texture of the floor and walls is smooth and hard, and the instruments and equipment are simply furnished for easy cleaning.


Microbiology laboratory design


(1) Preparation room

The preparation room is used to prepare the culture medium, sample processing, and the like. Indoors are equipped with reagent cabinets, storage cabinets or materials for counters, test benches, electric stoves, refrigerators, water and sewage, power supplies, etc.

(two) washing room

The washing chamber is used for washing dishes and the like. Pathogenic microorganisms are sometimes present because used utensils have been contaminated with microorganisms. Therefore, the washing chamber is set up as conditions permit. Indoors should be equipped with heaters, steamers, basins and buckets for washing utensils, as well as various bottle brushes, decontamination powder, soap, washing powder, etc.

(three) sterilization room

The sterilization room is mainly used for sterilization of the culture medium and sterilization of various instruments. The room should be equipped with sterilization equipment and facilities such as high pressure steam sterilizer and oven.

(4) Sterile room

The sterile room, also called the inoculation room, is a specialized laboratory for aseptic operation such as system inoculation and purification of strains. In the microbial work, the inoculation transplantation of the strain is a major operation. The characteristic of this operation is to ensure the pure species of the strain and prevent the contamination of the bacteria. In the air of the general environment, due to the presence of many dust and bacteria, it is easy to cause pollution and interferes greatly with the inoculation work.

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Clean room laboratory design settings


1. The sterile room should be set up according to the principles of economy and science. The basic requirements are as follows:


(1) The sterile room should have two inner and outer rooms, the inner room is a sterile room, and the outer part is a buffer room. The volume of the room should not be too large to facilitate air sterilization. The small inner area is 2×2.5=5m2, the outer area is 1×2=2m2, and the height is 2.5m or less. All should have ceiling.

(2) There should be a sliding door in the interior to reduce the fluctuation of the air. The door should be placed at a position far from the workbench; the outer door should also be used for sliding the door, which should be located at an inner position.

(3) A small window shall be opened on the wall or "sparing fan" between the inner and outer compartments to make the necessary passages for the inside and outside of the inoculation process to reduce the number of times people enter and exit and reduce the degree of pollution. The small window is 60cm wide, 40cm high and 30cm thick. The window sash is hung inside and outside.

(4) The volume of the sterile room is small and rigorous. After using for a period of time, the indoor temperature is very high, so a ventilation window should be provided. The ventilating window shall be provided on the ceiling at the entrance of the inner chamber (ie, away from the worktable), which is a double-layer structure, the outer layer is a louver, and the inner layer may be a sash. The ventilating window can be opened after use in the inner chamber and before sterilization to circulate air. Conditionally install a constant temperature and humidity machine.


2. Sterile indoor equipment and appliances

(1) The workbench in the sterile room requires smooth surface and table level regardless of material or purpose.

(2) Install an ultraviolet lamp (30W in total) in the inner and outer chambers. The UV lamp inside the room should be installed directly above the working seat, 2m from the ground, and the UV lamp in the outside room can be installed in the center of the outer room.

(3) The outer room should have special overalls, shoes, caps, masks, porcelain basins and towels with Suer water, hand-held sprayers and 5% carbolic acid solution.

(4) The inner chamber should have alcohol lamps, commonly used inoculation tools, stainless steel knives, scissors, tweezers, 70% alcohol cotton balls, industrial alcohol, glass slides, special crayon, notebook, pencil, label paper, glue, Waste baskets, etc.

3. Sterilization of sterile rooms


(1) Fumigation: This is a measure of thorough sterilization of the sterile room. The sterile room should be used for a long time. When the pollution is serious, it should be fumigated. It can be fumigated with formaldehyde, lactic acid or sulfur.

(2) Spray: Before each use of the sterile room. Spray can promote the sedimentation of particles and microorganisms in the air, prevent the dust on the table and the ground, and have a bactericidal effect. Spray with 5% carbolic acid.

(3) Ultraviolet irradiation: before each use of the sterile room. Ultraviolet light has a good bactericidal effect. Generally, the ultraviolet lamp should be turned on for 30 to 60 minutes.


4. Sterile room work procedures


(1) Sterilization in a sterile room. The ultraviolet lamp was turned on for more than 30 minutes before each use, or 30 minutes before use, the inner and outer chambers were sprayed with 5% carbolic acid.

(2) After washing hands with soap, carry the required equipment into the outer room; replace the sterilized overalls, work caps and work shoes in the outer room, wear a mask, and then dip the hands with 2% phenol soap for 2 minutes. .

(3) Move all kinds of required items into the inner room and check them in place. Spray with 5% carbolic acid above the work surface and the operator's station space, return to the outer room, and then enter the inner room after 5-10 minutes.

(4) Before the inoculation operation, wipe the hand with 70% alcohol cotton ball; when performing aseptic operation, the action should be gentle, try to reduce air fluctuations and ground dust.

(5) Safety should be paid attention to during work. If the cotton plug is on fire, hold it with your hand or wrap it with a damp cloth. Do not blow it with your mouth to avoid burning. If the bacteria culture spills or breaks the bacteria container, apply it with a rag impregnated with 5% carbolic acid. Wipe the countertop or the floor with a rag soaked with 5% carbolic acid, and wipe the hand with an alcohol cotton ball before continuing.

(6) At the end of the work, immediately clean the countertops, and take all the articles and wastes that should not be stored in the sterile room out of the sterile room, spray the sterile room with 5% carbolic acid, or open the ultraviolet lamp for 30 minutes.

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(5) Constant temperature culture room


1. Setting of the culture room

(1) The culture room should have two inner and outer chambers, the inner chamber is the culture chamber, and the outer chamber is the buffer chamber. The volume of the room should not be large, in order to facilitate air sterilization. The inner chamber area is about 3.2×4.4=14m2, the outer chamber area is about 3.2×1.8=6m2, and the height is about 2.5m. It should have ceiling.

(2) The upper part of the wall separating the inner and outer chambers shall be provided with a vent with an air filter.

(3) In order to meet the needs of microorganisms for temperature, a constant temperature and humidity machine is required.

(4) Both the inner and outer chambers should be equipped with UV lamps in the center of the chamber for sterilization.

2. Cultivate indoor equipment and appliances

(1) The inner chamber is usually equipped with a culture rack and a shaker (shaker). Commonly used shaker machines are rotary and reciprocating.

(2) The outer room should have special overalls, shoes, caps, masks, hand-held sprayers and 5% carbolic acid solution, 70% alcohol cotton balls, etc.

3. Sterilization and disinfection of the culture room

Sterilization and disinfection measures with the sterile room.

Small-scale cultures can be performed in a constant temperature incubator without the use of a constant temperature culture chamber.


(6) General laboratory


A place where observation, counting, and physiological and biochemical measurements of microorganisms are performed. The furnishings in the room vary greatly depending on the focus of the work. It is usually equipped with a test bench, a microscope, a cabinet and a stool. The test bench is required to be smooth and smooth, and the test cabinet should be sufficient to accommodate the daily use of utensils and medicines.