ChemFAST Top is designed to meet all the routine safety requirements encountered by both the operator and the environment through the use of chemical reagents. Units are equipped with a manual device to set the inlet air velocity when heavy or volatile chemicals are used and are supplied with fluorescent lighting. ChemFAST Eliteis designed with a microprocessor controlled system for a range of data which includes type and code number of the filter being used, installation date, maximum time allowance for filter use and a warning date for its replacement. Built in with five different languages like Italian, English, German, French and Spanish. Audible and visual alarms are also available to protect the operator. These alarms cover out of range minimum and maximum air velocity, filter saturation, prefilter clogging, anemometer failure, gas detector failure and motorfan malfunctioning. ChemFAST Elite is equipped with fluorescent lighting as well as optional vacuum tap and power point.