Possible Results:
haya persistido
-I have persisted
Present perfect subjunctive yo conjugation of persistir.
Present perfect subjunctive él/ella/usted conjugation of persistir.

persistir

Titular el exceso de nitrato de plata con la solución de tiocianato de amonio (3.1) hasta que la tinción marrón rojiza haya persistido un minuto.
Titrate the excess silver nitrate with the ammonium thiocyanate solution (3.1) until the reddish-brown tint has lasted for one minute.
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