You are in uncharted waters here because there are no military or industry specifications to guide you, but safety is assured if you make the proper moves. Just be certain to correlate mini-strip response to your media stream to the response using standard Almen strips in the same orientation and stand-off distance to the media stream representing/simulating the location of the mini-strip(s) on your part. Do a complete saturation curve from which to derive intensity in proper fashion. Do not use a single strip.