13.5 % to ppm

13.5 % = 135,000 ppm

%ppm
10.5 %105,000
11.5 %115,000
12.5 %125,000
13.5135,000
14.5 %145,000
15.5 %155,000
16.5 %165,000

13.5 % = 135,000 ppm

Formula

1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm