【Nchịkọta】

Uru pH ikpu acidic nke 3.8 ruo 4.5 bụ ihe achọrọ maka ịrụ ọrụ kacha mma nke sistemu ahụ nke ya iji chebe ikpu. Usoro a nwere ike gbanarị nke ọma ịzere ịchịisi site na nje nje na-efe efe na ihe butere ọrịa n'ikpu. Ihe nchebe kachasị mkpa na nke kachasị mma megide nsogbu efu bụ ya mere ahịhịa dị mma nke ikpu. Enwere ọtụtụ ihe na-ahazi nhazi na ike nke sistemu microbial nke ikpu yana na-ejigide ọrụ nchekwa eke nke ikpu.