portable monitors, detectors and meters for monitoring, measuring, testing, detecting, analyzing and identifying specific gas constituents in a mixture of gases and parts and fittings used therewith, namely, battery chargers, pumps, floats, calibration kits, harnesses, straps and carrying cases, filters, alarms and earphones

portable and/or wearable gas detecting and gas monitoring instruments for personal protection including parts and fittings thereof; namely, earpiece attachments, battery packs, filters, sensors, probes, probe floats and carrying cases