261.5 PSU to mg/L

261.5 PSU = 260,224.9 mg/L

PSUmg/L
246.5 PSU245,298
251.5 PSU250,273.7
256.5 PSU255,249.3
261.5260,224.9
266.5 PSU265,200.5
271.5 PSU270,176.1
276.5 PSU275,151.8

261.5 PSU = 260,224.9 mg/L

Formula

1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation)