33.5 % to ppm

33.5 % = 335,000 ppm

%ppm
27.5 %275,000
29.5 %295,000
31.5 %315,000
33.5335,000
35.5 %355,000
37.5 %375,000
39.5 %395,000

33.5 % = 335,000 ppm

Formula

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