Profile: Structure Probe, Inc. specializes in providing scientific laboratory products. The entire family of electronic balances feature an all digital design, and with digital readouts featuring the latest in electronics and analytical balance technology. Leybold mechanical vacuum pumps are powerful, two-stage direct-drive workhorses, pumping 2.1, 3.4 or 6.9 cubic feet per minute (at 60 Hz operation) to clear out chambers and maintain vacuum with ease. They offer various standard features including fan-cooling, low noise operation, minimum vibration, built-in flap to minimize fluid backup into the chamber, Viton® fluoroelastomer seals, wide oil level tolerance, pressure drain facility, and constant oil lubrication with positive oil feed. Pumps are prepared and charged with either hydrocarbon or perfluoropolyether pump fluid such as Fomblin® or Krytox® fluid prior to shipment.