PARTU Air Purifier Filters

A simple exchange and procedures quite simple, however I can't get the 'needs replacing' light to go out?Gramps

Excellent quality

I have a PARTU BS08 air purifier purchased September 2019 from Amazon and it works 10/10 and is quiet. I found the Ansio filter from Amazon £15 is identical replacement. Photos shows dirty old PARTU filter, new Ansio filter, height, width and make up exactly the same.

I bought it alongside with the PARTU airpurifier. It fits it well as it's its specific filter replacement. The length at which you need to replace it depends on the how much you use the purifier. I haven't dirted my first one yet, but it has been one month already and it's still new. (I leave the fan on at speed 1 the whole night for around 9 hours and speed 3 for 3 hours per day)