[ken3009]

the cheese is hard and currently i use sodium citrate solution and boiling water...is there a better/faster way to dissolve the cheese so it passes through the very tiny pores of a foreign matter test card?

[Arkcon]

That is probably the best way, for the test you have at hand.  If you're checking for foreign matter, than a more efficient homogenizer (a blender, for example) or a harsher reagent would cause you to lose a result.  Maybe, if you have to boil for a long time, a pressure vessel would soften the cheese faster, without destroying the contaminant.  But you show look up the relevant regulatory board to see if that's allowed.  Or validate such a new method yourself.