ISOLOK SAA, SAB and SAL-B automatic point samplers for liquids and biosolids are available from Sentry Equipment Corp. ISOVALVE isolation valves allow samplers to be easily removed for inspection or service while process lines remain pressurized. These sampling solutions are safe, clean, reliable and simple to use, reducing human error, providing consistent representative samples for analysis and process control, and increasing safety, efficiency and cost savings. 262/567-7256; www.sentry-equip.com.