Pene Whakarewa
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DRK8011 Pene Ira Whakarewa Mamati
Ko te abbeder refractometer he taputapu e ahei ana ki te whakatau i te wai maramara, te wai whakawhiti, i te taupae mataaro totoka ranei ND me te marara papatahi ND-NC (ko te nuinga kei roto ko te wai maramara te nuinga).
