Tylan Mass Flow Controller 2900 Series 150 SCCM PN: FC-2901V. These products are subject to export restrictions under U. The Bureaus of the U. Census and the Bureau of Industry and Security (BIS) regulate exports through the Export Administration Regulations (EAR). Please be aware that we may require additional time to determine the products export classifications Export Control Classification Number (ECCN) and if it is determined an export license is required, we would need an additional time for licensing.