E tika ana mo nga raupapa whakapiri: te whakapiri UV, te tuatahi, te epoxy resin, te waikawa kiriaku, te polyurethane, te whakapiri silicone, te whakapiri hiriwa, te whakapiri konuhono, te hinu, te mangumangu, te wai koiora, me te kawe ine ine hau. Ko te awhe rehu kei roto i te 20000 CPS o te rehu wai, a ka taea te rehu etahi wai 100000 CPS.