I would assume that objections would be ruled upon and the case moves forward .. a good judge would not hold it against you. Cite case law and he'll see that you believe it is a valid objection.

I object ALL the time ... w/o objecting, you waive it for later consideration...a fatal mistake in some cases.

Object to : legal conclusions, non-expert opinion, etc .. read Melendez-Diaz and other cases that cite it .. his testimony that it was calibrated is a legal conclusion IMO.

A judge can deny any motion or objection .. if he does, just move on ~ you made a record of it for review later if needed.