HEMCO Corporation 711 S. Powell Road Independence, MO 64056 Phone (816) 796-2900 Fax (816) 796-3333 PERCH-11.13 Lab Planning Solutions HEMCO R PVC or Stainless Steel Work Surfaces integral PVC or 316 stainless steel work surface and drainage trough. Perchloric Acid Fume Hoods Full 30” Viewing Height with 28.5” sash open- ing height for ease of access and viewing tall apparatus setup. Sash is 3/16 thick tempered safety glass, vertical moving with single point counterbalance, contoured sash handle for efficient air flow and ease of movement. Access Panel removable to access ducting connections, wash down system, and electrical services from a single point electrical box,115V/60Hz AC opera- tion. Energy efficient explosion proof light fixture, with light switch on left column,all factory installed. UniFlow Perchloric Acid fume hoods are engineered for the safe handling of perchloric acids in laboratory procedures. Perchloric Acid hoods come in 48”, 60”, & 72” widths and include a dedicated wash down and exhaust system. It is recommended to thoroughly wash down fume chamber and exhaust system after each use. Note: Perchloric Acid Hoods are for perchloric acid use only. UniFlow Superstructure constructed of either PVC or 316 stainless steel features exclusive unit- ized dual wall construction for superior chemical resis- tance, strength,and durability. Rear drain trough is integral to superstructure. Fume Chamber type 316 stainless steel fume or PVC fume chamber and baffle. Dedicated wash down with integral piping spray nozzles & remote control on right column. Fume Hood Face Velocity cfm Sash in full open position should be for setup of apparatus & maintenance service only. If opening is at 1/2 open at 120 fpm (feet per minute), face velocity at full open would be approximately 60 fpm. The recommended face velocity for perchloric acid fume hood efficiency & safety should be 120 fpm. Lower face velocity may compromise user safety. Perchloric Acid Fume Hood Sash Management & Design Size hood 48” 60” 72” Full open cfm Exhaust Blower 950 1250 1525 1/2 open cfm Exhaust Blower 475 625 765 Air Flow Monitor continuously monitors face velocity airflow, analog or digital available. Meets ANSI and OSHA requirements. Optional equipment. Ducting & Wash Down Systems Perchloric Acid Exhaust Blowers (see page 26) Airflow Monitors (see page 37) Plumbing and Electrical Services Factory installed according to your exact specifications (see page 11) Base Cabinets and Worksurfaces (see page 10) OPTIONAL ACCESSORIES Refer to HEMCO’s PLAN-A-HOOD on page 9 to assist in the planning of your UNIFLOW fume hoods. Wash down control valve UniFlow Perchloric Acid Hood Cat. No. 12521, shown with optional accessories.