Ko te kounga o te pp brush filament kei runga i enei paearu:

1. Ine mehemea he rite te diameter o te kakawaea

2. tirohia mehemea he rahi te makawe

3, me te miihini whakamatautau ki te ine i te awangawanga o te waea paraihe, kia kitea he ngawari te pakaru o te waea.

4, Ko te whakamatautau wai kohua, ahakoa he ngawari ki te whakarereke

5, ki te kaari tae, ahakoa ko te tika o te tae o te 98% neke atu ranei