QUANTUM DESIGN

Measuring instruments, namely, magnetometers; physical property measurement systems, being thermal, optical, calorimetry, and electrical measuring instruments; analog signal conditioners, namely, temperature controllers for control of the environment of the sample being measured; cryogenic instruments, namely, cryostats for accurately and precisely reaching the desired temperature at a specified rate and maintaining the desired temperature of the sample being measured, cryostat-based helium liquefiers used for turning helium gas to liquid helium, cryostat-based helium purifiers used to purify helium gas to higher levels of purity, and compressors used to keep the cryostat instruments cold enough to perform duties at sufficiently reduced temperatures to function as stated; high sensitivity current amplifiers for accurately and precisely reaching a desired magnetic field at a specified rate and maintaining the desired magnetic field at the sample being measured; microscopes, namely, scanning electron microscopes and atomic force microscopes