OI Analytical 4100 Water/Soil Sample Processor
Automated Water and Soil Sample Processing for Reliable VOC Analysis
The OI Analytical 4100 Water/Soil Sample Processor automates the handling and processing of samples in 40 mL VOA vials for purge-and-trap analysis of volatile organic compounds (VOCs). Designed for drinking water, wastewater and soil applications, the system processes up to 100 samples and supports operation with one or two Eclipse 4660 purge-and-trap concentrators. Innovative technologies such as the VOA Constrictor™ vial gripper and automated standard addition improve sample handling reliability, analytical performance and laboratory efficiency.

Reliable Automation for High-Throughput VOC Sample Preparation
The 4100 Water/Soil Sample Processor is equipped with a pneumatically actuated VOA Constrictor™ vial gripper that automatically transfers 40 mL VOA vials between tray positions and the sampling station. Integrated vial sensing confirms vial presence and helps prevent handling errors.
For water samples, the system aspirates sample into a loop for transfer to the purge-and-trap instrument. For soil samples, the processor injects a programmed volume of water, heats and stirs the sample, and transfers released VOCs to the purge-and-trap trap. Automated standard addition is available through integrated reservoirs and electronically controlled injection valves. Optional vial cooling maintains samples at 10 °C or lower before analysis.
More information
Do you have specific requirements or questions? Our specialists are ready to provide expert advice and support.





