A guide to maintenance a Class II Biosafety Cabinet

Daily maintenance of a Class II Biosafety cabinet:

Because the operating time will directly affect the judgment of maintenance needs, we recommend the user keep a detailed record of operating time for reference.

When doing maintenance, please pay attention to cut off the power, so as to avoid electric shock!

Preparations before maintenance:

Soap, hot water or warm water, a soft cotton cloth, dry cloth or towel, medical alcohol or other disinfectants, 100 dilution of household bleach, abrasive household cleaners, sterile water

Clean the cabinet surface:

1) Clean the operating area surface

Wipe the entire surface with a soft cotton cloth or towel soaked with concentrated liquid soap, then wipe up the soap with another cotton cloth or towel soaked with clean hot or warm water, and then wipe the surface with a dry cotton cloth or towel rapidly.

For the contaminated or dirty work surface or sump., use 70% medical alcohol or other disinfectant to wipe.

Disinfectants used for wiping should not damage 304 stainless steel.

2)  Clean the external surface and front window.

Use soft cotton cloth or towel to wipe the surface with non-abrasive household cleanser.

Overall maintenance period of a Class II Biosafety cabinet:

We suggest comprehensive maintenance period is one year or 1000 working hours.

Maintenance methods

1) Weekly or daily maintenance

Disinfect and clean operating area;

Clean the external surface and front window around the operating area;

Check the various functions of equipment;

Record this maintenance result

2) Monthly maintenance

Clean the the external surface and front window.

Wipe the working table, inner wall surface of operating area (excluding the wind distributing grid of operating area) and the inner surface of glass door with 70﹪ medical alcohol or household bleach diluted 1:100 (i.e, 0.05% sodium hypochlorite). Then wipe again with sterile water in order to eliminate the rest chlorine.

Check the various functions of equipment;

Record this maintenance result;

3) Annual maintenance

Check the two conveyor belts of front window drive unit, and ensure that their tightness is coincident.

Check the UV lamp and fluorescent lamps.

Apply for testing the overall performance of cabinet on an annual basis to ensure the performance safety. User is responsible for testing costs.

Record this maintenance result.

Storage conditions of a Class II Biosafety cabinet:

Biosafety cabinet should be stored in a relative humidity no more than 75%, the temperature is below 40℃, in the warehouse with good ventilation performance, no acid, no alkali and no other corrosive gases, storage period shall not exceed one year, biosafety cabinet for more than a year needs to unpacked and checked. Only the tested and qualified biosafety cabinet can be sold.