FEATUREFROG-5000FROG-4000 VOC Detection in Air, Water or Soil Included Software Highly Portable Scrubs Ambient Air for Carrier Gas BatteryLithium Ion*Nickel Metal Hydride Battery Life9 hours6 hours Battery-Life Indicator Built-In Battery Charger Ability to Set Flows in Software Simplified Air Sampler Installation Easy to Access PID Clearly Labeled Load/Analyze Valve Positions Toggle Forward and Backward Through Results Display Removable micro-SD Card for Fast Data Transfer
*Option for a nickel metal hydride battery if preferred