ʻO ka ʻōpala kulina i kuʻi ʻiahe mea hoʻopōʻino kūlohelohe a biodegradable i hana ʻia mai ka ʻāpana lāʻau o nā ʻōpū kulina. He koho kaulana ia no nā ʻano like ʻolenā hana pahū a me ka poli ʻana, no ka mea, he kūpono ia a he aloha i ke kaiapuni.
ʻO ke kaʻina hana no ka grit abrasive corn cob i kuʻi ʻia e pili ana i ka kuʻi ʻana a me ka kānana ʻana i nā cobs kulina i ka nui a me ke ʻano i makemake ʻia. A laila hoʻomaʻemaʻe ʻia a hoʻomaloʻo ʻia ka mea i loaʻa ma mua o ka hoʻopili ʻia ʻana a kūʻai ʻia aku.
| Nā ʻĀpana Meaʻai o ka ʻŌpū Kulina | |||
| Paʻakikī | 2.5 -- 3.0 Mohs | ʻIkepili o ka pūpū | 89-91% |
| ka makū | ≤5.0% | ʻakika | 3-6 PH |
| Pūmua maka | 5.7 | ʻO ka olonā maka | 3.7 |
ʻO kekahi o nā pono nui o ka grit abrasive corn cob i kuʻi ʻia, ʻo ia ka waiwai hou, ʻoiai he huahana ʻaoʻao o ka ʻoihana mahiʻai nā cobs kulina. ʻO kēia ka mea e lilo ai ia i koho hoʻomau ma mua o kekahi mau mea abrasive ʻē aʻe, e like meone a i ʻole nā momi aniani.
Ma keʻano holoʻokoʻa, he koho maʻalahi a pili i ke kaiapuni ka crab corn cob i kuʻi ʻia no nā ʻano hana abrasive like ʻole.
Inā he mau nīnau kāu. E ʻoluʻolu e hoʻokaʻaʻike mai iā mākou.