General Chemistry: remove the PTFE coated filter bag, shake it gently, pour out the dust and foreign matters in the filter bag, soak it in the drinking water for no more than 20 minutes, take it out, wash it with drinking water, and pat it gently when washing until the washing water becomes clear. After drying in a clean place, check the bags carefully. If it is damaged, replace the filter bag in time.
Cephalosporins: remove the PTFE membrane filter bag, put it into the prepared 1% sodium carbonate solution, soak it for 10 minutes to make it inactive, take it out, remove the foreign matters in the bag, wash it with drinking water, pat it gently until the cleaning water becomes clear. After drying in a clean place, check the bags carefully. If there is any damage, replace the filter bag in time.
The primary and secondary filters shall be cleaned and ventilated indoors. The temporarily unused PTFE coated filter bag shall be cleaned and then put into a clean plastic bag for sealing.
At the beginning of each workshop, the medium efficiency filter is special and cannot be used interchangeably. At the beginning of each workshop, the medium efficiency filter shall be cleaned with membrane filter material separately, and the PTFE coated filter bag shall be processed, dried and stored.
