Tylan FC-2900MEP5 2900-Series-50 SCCM NF3 Mass Flow MFC Controller System. For Questions, please contact. 214 – 828 – 7854. Our items are described as accurately as possible, however, should an item arrive damaged or incorrectly described, we will do our best to work with you to resolve the situation. Nissi Equipment takes extra care in securely packaging your item to ensure that you receive it in listed condition. We do not mark merchandise values below value or mark items as gifts US and International government regulations prohibit such action. We accept no responsibility on the correct/incorrect application or installation of this item. This item is to be installed and maintained by qualified individuals. We claim no expertise in the use of this item.