The OmiScan Gas is fully portable and comes as either a 4 or 5 gas analyser designed for workshop and on road testing. The unit OmiScan Gas The OmiScan Gas is fully portable and comes as either a 4 or 5 gas analyser designed for workshop and on road testing. The unit consists of a base station, containing the pump, filters, oxygen and NOx cells, where communication is via Bluetooth® wireless ...