GLS Sampler With 2.5 Gallon Polypropylene Bottle_1281105
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GLS Sampler With 2.5 Gallon Polypropylene Bottle


The price is inclusive of GST
Pump: Maximum Lift26 ft. (7.9 m)
Pump: Pump Tubing Life2,000 samples
Pump: Intake Suction TubingLength 3 to 99 ft. (1 to 30 m), Vinyl or Teflon® lined, ID 0.375 in. or 0.250 in
Pump: Tubing Life IndicatorProvides a message to change pump tubing
Pump: Intake PurgePurge before and after each sample
Size (Diam. x Height)16.5 x 26.5 inches (42 x 67 cm)
Controller: ​​Number of composite samplesUp to 500 maximum
Controller: Flowmeter signal input5 to 15 volt DC pulse or 25 millisecond contact closure
Controller: ​Program storage1 sampling program (in non-volatile ROM)
Controller:​ ​Sampling modesUniform time, flow. (Flow mode is controlled by external flow meter pulses.)
Controller: Controller diagnosticsTests for RAM, ROM, pump, and display
Controller: EnclosureNEMA 4X, 6 IP67
Controller:​ Clock accuracy1 minute per month, typical, for Real Time Clock
Controller:​ Sample frequency1 minute to 9,999 minutes, in 1 minute increments. 1 to 9,999 flow pulses
Controller: Sample volumesProgrammable 10 to 9,990 ml in 1 ml increments
Controller: Sampling modesUniform time, flow. (Flow mode is controlled by external flow meter pulses.)
Pump: ​​​​​​Typical line velocity @ Head height​2.9 ft./s @ 3 ft; 2.5 ft./s @ 10 ft; 1.9 ft./s @ 15 ft. (0.76 m/s @ 0.9 m; 0.76 m/s @ 3.1 m; 0.58 m/s @ 4.6 m)
Controller: Clock Accuracy1 minute per month, typical, for real time clock
Controller: Sample frequency1 minute to 9,999 minutes, in 1 minute increments. 1 to 9,999 flow pulses
Pump: ​​​​Typical repeatability​±10 ml
Power requirements12 volts DC. (Supplied by battery or AC power converter.)
Pump: Operational Temperature32° to 120°F (0° to 49°C)
Pump: Sample presence detectorNon-wetted, non-conductive sensor detects when liquid sample reaches the pump to automatically compensate for changes in head heights
Sample bottles1.0 or 2.5 gallon polyethylene or glass container
Weight24.5 lbs (11.1 kg) (dry, less battery)
GLS Compact Sampler Pocket Guide
GLS Compact Sampler User Manual
Isco GLS Compact Composite Sampler Datasheet

All Isco brand portable samplers are built to withstand harsh environments. 

  • Vacuum-formed ABS plastic shell withstands exposure and abuse. 
  • Twin-wall construction with foamed-in-place insulation maximizes structural integrity along with the efficiency of ice used for sample preservation. 
  • NEMA 4X, 6 (IP67) controller rating for submersible, watertight, dust-tight, and corrosion resistant service.

GLS Compact Composite Sampler

It's a great little sampler!


The GLS Sampler is designed for general purpose or priority pollutant sampling in municipal and industrial applications where a full-size sampler is too large. It collects composite samples, based on time or flow intervals, in 1- or 2.5-gallon glass or polyethylene bottles, or in 2-gallon disposable ProPak® bags.

With GLS's simplified programming, setup takes less than a minute. In the field, the operator simply calls up the program with two keystrokes, presses the "go" button - and the sampling routine begins. You can also key in an alternate program in the field, without losing your stored program.

Standard Features

  • 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

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