NuAire's FumeGard NU-156 Vertical Laminar Flow Fume Hood is a constructed of 100% stress-relieved, fully seam-welded white polypropylene, that can be used where product and personnel protection are required. Areas of use include chemical research, microelectronics, high acid / trace metal analysis use, semi-conductor design / development and/or production assembly processes. The NU-156 FumeGard has been designed and tested to meet the performance criteria as established by the NSF Standard #4, Federal Standard 209d, and meets the ASHRAE Standard 110-1995 for fume hoods. The NU-156 is ergonomically designed to provide maximum user comfort, making your laboratory safer and more efficient