Yeast starter after only one day

[Slev]

I had intended to brew on Sunday,  so put on a starter last night (only. 55l for a 14litre batch).  But looks like I may be brewing this evening. 
I've read of vitality starters,  which go on the stir plate for about 4 hours before use, but this is before fermentation kicks off I assume

Will I be able to use the starter, if it has started fermentation,  or will I need to let it finish its thing before adding it to the cooled wort? ( it will be 24 hours on the stir plate when the wort is ready for it)

[Qs]

You'll be fine you just wont get to decant.

[Leann ull]

If it's purepitch and fresh you will be fine

[Slev]

Yep.  Purepitch,  manufacture date 22nd Aug. 

[Leann ull]

You should see lots of bubbles if you turn off stir plate for 30 secs, it's good in any case

[Slev]

Got home to find the stir plate had given up the ghost.  Some slurry in the bottom, forthy head. 
Will be fine.  Thanks for the input folks  always appreciated

[johnrm]

If stir plate is knackered, gi ve it a shake at intervals, should be ok.

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