XPert Weigh Box has inlet and outlet HEPA filters and provides a leak-tight physical barrier to protect the operator from hazardous airborne particulates and powders. These boxes include an anti-static ionizer fan to reduce static charge and a balance vibration isolator, both useful during weighing operations.
Exclusive features include: one-piece molded, medium-density polyethylene shell; 1/4" thick laminated safety glass viewing window with powder-coated steel frame and neoprene gasket; interior-mounted anti-static ionizer fan; balance vibration isolator consisting of a marble slab, isolator pads and stainless steel cover; space-saving inner and outer transfer chamber doors that pivot upward, are counterbalanced and equipped with quick-latches; black, chemical-resistant phenolic core work surface sealed to the glove box floor; interior ceiling-mounted electrical duplex; built-in blower with speed control capable of airflow from 13 CFM to 100 CFM; inlet and outlet HEPA filters, 99.99% efficient on 0.3 micron particulates, and test port for challenging HEPA filter; main chamber static pressure gauge for monitoring HEPA filter loading integrity switches for light and innermost interior electrical receptacle; 0.05 ppm average tracer gas levels or less detected during perimeter scan testing (surpasses ASHRAE 110 standards); airborne particulate cleanliness (measured under positive and negative pressures per ISO 14644-1 test method) exceeds ISO Class 5 conditions (equivalent to Class 100) and achieved ISO Class 3 conditions (equivalent to Class 1) at both minimum and maximum operational airflow volumes; no detectable leaks greater than 1 x 10(-3) ml/sec when tested with a mass spectrometer while glove box is pressurized with helium at 5 inches of water gauge; vibration less than 1.5 x 10(-5) inches displacement measured at the work surface at both minimum and maximum airflow volumes; transfer chamber interior interlocking shelf of dry powder epoxy-coated steel. Other features include: dry powder epoxy-coated steel superstructure; pair of neoprene gloves, 0.15" thick, 30" long, size 9 ¾; 22 watt fluorescent lamp; main chamber interior dimensions of 33.5" w x 27.5" d; and transfer chamber dimensions of 11" nominal ID x 12" long.