- Allied Measurement Systems Corp is the Heavy Capacity Specialist in the Illinois and Northern Indiana Area Featuring products like the QuickSilver Intrinsically Safe. The all-new QuickSilver IS (Intrinsically Safe) Bench Scale Instrument is designed specifically for explosive environments where low energy usage during normal operation is a must. Standard equipment battery pack allows for ultimate mobility, while sanitary design makes the QuickSilver IS Bench Scale perfect for wash-down environments. The QuickSilver IS is approved for all hazardous area Groups, Classes and Divisions when used with its reachargeable battery. When used with the direct power supply, the QuickSilver IS is not approved for Groups A & B.