Investment-filled flask shelf life

I filled some prepared flasks with investment this morning,
intenting to cast this evening. But now I won’t be able to do the
planned burnout/cast today. The next time I’ll have an opportunity to
do it is next weekend. Will these flasks be OK if they sit for a
week? Is there anything I should do to protect the investment so that
the castings turn out alright? Please reply to @Kathy_Johnson1
because I’m currently no-mail on Orchid. Thanks!

–Kathy Johnson
Feathered Gems Pet Motif Jewelry