Profile: New Star Environmental Inc. is a provider of environmental monitoring instrumentation. Our products include particle sizing impactors, particle counters, syringe filters, filter media and stack monitors. Our Met One GT-321 one channel particle counter counts particles down to 0.3 microns. It is completely self-contained with the battery pack providing up to 8 hours of typical intermittent and 5 hours of continuous operation. It provides concentration results in roughly 6 seconds.