The ISCO GLS Compact Composite Autosampler collects composite samples, based on time or flow intervals, in glass or polyethylene bottles, or in disposable ProPak bags. The GLS autosampler comes with the option of different composite sampling bottle configurations to suit your specific monitoring requirements.

Its overall diameter is only 42 cm and the dry weight is less than 12 kg making it ideal for remote monitoring.

Composite sampling gives a more representative idea of the average condition of a water body over time. Applications best suited to the GLS include monitoring of wastewater effluent, stormwater monitoring, combined sewer overflow (CSO) monitoring, demonstrating permit compliance, or pre-treatment compliance.