When I mix my solution,how long is it supposed to sit before adding naphta?Is it better to let sit a week or so before starting extractions?

Is it necessary to partially evaporate before freeze precip?I have not had much luck w/o doing a partial evap first,but have read other posts who say they dont evap and it seems to work for them.

1. An hour or two of sitting/mixing is enough before adding nap.

2. if you use smaller amounts of nap you can go straight to the freezer.

Thanks