Site na mmepe nke ọha mmadụ, ihe gbasara nchekwa okporo ụzọ enwetawo nlebara anya na-abawanye ụba, na arụmọrụ nchekwa nke ụgbọ ala adọtala mmasị karị.N'oge na-adịbeghị anya, ọkọlọtọ nchekwa ụgbọ ala ọhụrụ - akwụkwọ PAS 68 adọtala mmasị zuru oke ma ghọọ isiokwu na-ekpo ọkụ na ụlọ ọrụ ahụ.
Akwụkwọ PAS 68 na-ezo aka ọkọlọtọ nke British Standards Institution (BSI) nyere iji nyochaa nguzogide mmetụta ụgbọ ala.Ụkpụrụ a abụghị naanị na-elekwasị anya na arụmọrụ nchekwa nke ụgbọ ahụ n'onwe ya, kamakwa ọ gụnyere nchekwa nke akụrụngwa njem.A na-ahụta asambodo PAS 68 ka ọ bụrụ otu n'ime ụkpụrụ nchekwa ụgbọ ala kacha sie ike n'ụwa.Usoro ntule ya siri ike na nke siri ike, na-ekpuchi ọtụtụ ihe, gụnyere nhazi nhazi ụgbọ ala, ike ihe, nyocha ihe mberede, wdg.