Grit like particles in my Rodinal.

[Cluster]

Early this year (maybe late last year), I bought some Rodinal to try. I used it a couple of times during the year and today I wanted to try semi-stand development on a test strip of Fomapan 400.
I found that there is grit/crystal like bits in the 100ml bottle of Rodinal (RDL, Bellini foto). Is this unusual?

The test frames seem to have developed OK (yet to scan), maybe with low contrast.

 

[VirtualAdept]

From what I've experienced with different brands of rodinal, its entirely normal and, as far as I've been able to tell, makes no difference to its efficacy.
Just make sure you've not got any chunky bits going into the tank when you're developing

 

[Kevin Allan]

I suggest a coffee filter inside a funnel to strain the liquid