Izimo zezokwelapha ezingafaneleki zibalwe ngezansi. Amakhodi e-International Classification of Diseases (ICD) afakwe ohlwini lwabazali ngokulandela izinga ngalinye.
Izimbangela zokwenqatshelwa kokuqokwa, ukubhaliswa, nokukhishwa (ngaphandle kokushiya okuvunyelwe ) yimlando eqinisekisiwe ye:
a. Ama-Audiometers, alinganiselwe emazingeni we-International Standards Organization (ISO 1964) noma i-American National Standards Institute (ANSI 1996), azosetshenziselwa ukuhlola ukulalela kwabo bonke abafaki izicelo.
b. Yonke imizila ye-audiometric noma ukufundwa kwe-audiometric eqoshiwe emibhalweni yokuhlolwa kwezokwelapha noma amanye amarekhodi wezokwelapha izobonakala ngokucacile.
c. Amazinga wokuzwa we-audiometric ezamukelekayo (zombili izindlebe) yi:
(1) Iphimbo elungile kumakhilomitha angu-500, 1000, kanye no-2000 ngomzuzwana wezingu-30 zama-decibel (dB) ngokwesilinganiso (indlebe ngayinye), engenalutho elingaphezu kuka-35dB kulezi zikhathi.
(2) Izinga lethebula elingafanele elingaphezu kuka-45 dB kumakhilomitha angu-3000 ngomzuzwana indlebe ngayinye, no-55 dB kumakhilomitha angu-4000 ngomzuzwana indlebe ngayinye.
Isiqondiso seMnyango Wezokuvikela (DOD) 6130.3, Izindinganiso Zomzimba Zokuqokwa, Ukubhaliswa, nokukhishwa, nokufundiswa kwe-DOD 6130.4, Imigomo kanye Nezinqubo Zokusebenza Kwezimiso Zomzimba Zokuqokwa, Ukubhaliswa, noma Ukukhishwa Kwezimpi Ezihlomile .