Cara menukar nombor dalam peratus (%) kepada bahagian-per juta (ppm) .
1% = 1/100
1ppm = 1/1000000
Jadi, satu peratus sama dengan 10000 bahagian-per juta:
1% = 10000ppm
Jadi
x (ppm) = 10000 ⋅ x (%)
Tukar 1.7% ke ppm:
x (ppm) = 10000 ⋅ 1.7% = 17000ppm
pengiraan ppm hingga peratus ►
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