How to sanitize 0.2 micron capsule filter (PES membrane) after using it for several times?
It has been observed that the filters less than 5.0 micron pore sizes cannot be cleaned. This is true for clogging of the interior of the filter, but if the contamination is concentrated on the filter surface, cleaning may be possible.
It will depend on your previous use and current status of the filter. You can follow the article below for more details:
https://www.pall.com/content/dam/pall/biopharm/lit-library/non-gated/application-notes/09.3873_USTR2660_Considerations_Re-Use_Sterilizing-Grade_Filters_AN_EN.pdf
Regards,
K
Cleaning Procedure for a Cartridge Filter System
The purpose of cleaning a cartridge filter system is to release the trapped contaminants from the filtration media. The procedure of cleaning must be performed in the following steps.
Turn off the filtration system so that the water flow is restricted.
Close all the suction and return valves.
Open the bleeder valve to expose the filter tank.
At the bottom of the filtration tank, you will see a drain plug. Deject the drain plug and let all the trapped water flush out.
Remove the top of the filter tank. Wipeout dirt, oil, lubricant from the filter seal, O-ring, and the filter tank body.
Remove the cartridge sheet folds from the filter tank/tube. Wash off the cartridge folds from top to bottom using a full spray garden hose. Ensure that the spray pressure does not exceed 5-7 psi; higher pressure can damage the filtration media.
Reposition the cleaned cartridge into the filter tank/tube.
Reinstall the drain plug at the bottom of the filtration tank.
Apply lubricant on the O-ring and then close the tank top.
Open the suction and return valves and keep the bleeder valve open. This will allow the filtration media to aerate naturally. Continue until water squirts in, up to the level of the bleeder valve.
Open the strainer tank and fill it with water.
Turn on the cartridge filter cleaning system and then finally open the bleeder valve.
This completes the cleaning of a cartridge filter, however, to gain the benefits of a longer life-cycle of the filter, other maintenance activities are essential too.
Tips for Maintenance and Damage Prevention
The following are some maintenance tips that will help you prevent damage to the cartridge filter system.
To avoid damage, ensure that operational pressure does not exceed the allowed range of pressure. High pressure often damages or rips off the cartridge sheets.
Avoid using hard metal bushes to clean the filtration sheets.
Avoid sudden turnoff of the cartridge filter cleaning system, this can create reverse jerk flow of water, swirls inside the filtration tank, etc resulting in abrupt damage of the system.
Along with appropriate maintenance and cleaning, the quality of filers makes a huge impact on its life cycle and application. Therefore, you must ensure to buy it from the trusted manufacturers or suppliers like Cannon Water Technology, Inc. The company is a prominent supplier of water treatment products. The cartridge filter system is one of their popular products.
In order to do this, you'll need to soak the elements in a Filter Cleaner, Natural Chemistry's Filter Perfect, or dishwasher detergent (one cup per five gallons of water). For the best results, be sure to soak the filter cartridge up-to 10 hours. Give them a quick rinse with fresh water before proceeding.
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