GLS Compact Composite Sampler

The GLS Sampler is designed to collect composite samples for general purpose monitoring. It holds a 1- or 2.5-gallon sample bottle, or a 2-gallon disposable ProPak® bag.

Standard Feature

  • Overall diameter is only 16.5 inches (42 cm), so GLS fits easily into manholes as small as 18 inches (46 cm), and also easily drops into most offset manholes.
  • Dry weight is less than 25 lbs (12 kg), the lightest sampler in the Isco line.
  • Hinged handle makes one-handed carrying a breeze.
  • The patented LD90 Liquid Presence Detector and Isco pump revolution counting system deliver accurate, repeatable sample volumes time after time.


  • wastewater effluent
  • stormwater monitoring
  • CSO
  • wastewater effluent
  • permit compliance
  • pretreatment compliance

Options and Accessories

  • Composite Sampling bottle configurations (1-gallon or 2.5 gallon glass or plastic; 2 gallon ProPak disposable sampling system)
  • Power sources
  • Suction lines and strainers
  • Samplink Software