Fume Hoods are always a fixture in industrial and academic settings to capture and exhaust toxic vapors which result from experimentation in a laboratory. Their most important function is to protect the student or technician, as well as the environment. However, there are many instances where the reagents or products also require special conditions, whether it be increased ventilation, or a completely non-metallic work surface. Trace Metal Analysis and High Acid Digestion are two systems where a polypropylene hood is necessary for precise, safe testing.
Trace Metal Analysis to identify trace metals in various materials to the ppm, ppb and ppt level has many applications. Medical laboratories do blood and urine testing to detect toxic or deficient levels of particular metals in the body. Marine biologists look for trace metals in algae and other aquatic organisms to determine the effect of their presence on growth and proliferation. Forensic scientists can treat skin with a test solution and illuminate residual metal with UV light, determining the presence of metal, the type, weight and duration of contact. These analyses are so precise that the experimentation must be done in a completely non-metallic environment.
Likewise, High Acid Digestion is used to analyze soil and rock samples by first dissolving silicate minerals. Basically, it is a process which breaks down a complex substance into volatile gases and simple salts. Various chemical methods can then be used to accurately determine the concentration of each element. Digestion techniques can also be used to test the integrity of plastic laminate materials used in industry and construction. Fume hoods with metal components are contra-indicated for these types of analysis due to potential corrosion.
Features of the Polypropylene Hood include:
1) White polypro worksurface, cupsink, gooseneck and service fixtures.
2) Flame retardant lined electrical components.
3) Twenty amp duplex outlets with fume-tight covers
4) Top-located fluorescent lighting with translucent polypro window – light switch on front of hood.
5) White polypro ceiling enclosure, 3-sided to nine foot ceiling.
6) Meets ASHRE 110 requirements.
Polypropylene fume hoods and casework are also appropriate for industries using sophisticated electronic and semiconductor equipment.