Advanced Research Instruments Corp. is a manufacturer of electronics for scientific and industrial applications, focusing on high-performance and reliable instrumentation. Their product range includes preamplifiers for PMT's, electron multipliers, high voltage power supplies, counters, timers, precision rate meters, and computer interfaces. Additionally, they offer specialized services such as image analysis, enhancement, airborne particle analysis, gun shot residue analysis, and solid water pollutant analysis. The company emphasizes quality and customer satisfaction in all their offerings.