K14 Elevated CO2

[CG43]

Plus you're pumping more gas into that filter than required. On tiny (Coltri) filters you simply don't have much filter time to waste.

A small filter needs less air to bring it to PMV pressure. It is the ratio of filter volume to MS quantity that plays a role here.

If you look at videos of the Coltri MCH 6 there are filling hoses without shut-off and ventilation valve.
Here the filter must be completely vented after each tank.
For 95 euro you can buy the shut-off/venting valve.
Whether a PMV is present cannot be said with certainty in every video, but a PMV can be retrofitted for 310 euros.
If you only use the MCH 6 occasionally and operate it with PMV and shut-off/vent valve, so that the filter does not have to be vented after every single tank, the filter will also be able to achieve the specified service life. If I estimate the filter size according to the videos, it certainly looks that way to me and Coltri is a large compressor manufacturer who can calculate and test this .
If in doubt, read the link from happy diver # 20 Scuba Engineer to a larger Coltri with PMV.

 

[Agro]

Coltri is a large compressor manufacturer who can calculate and test this .

Coltri produces loasy compressors, especially MCH6.
Cotri produces loasy compressor parts, for ex. filter including PMV.
Perhaps they can calculate anything but they don't care about it. They sell the cheapest product even if they know it's rubbish.