ISCO GLS Composite Sampler

  • Available for Rental Next day delivery to mainland UK when rental paperwork is received by 12 midday (stock permitting)
  • Ultra Compact and Easy To Handle Overall diameter of only 16.5 inches and a dry weight of less than 25lbs
  • Accurate, Repeatable Sample Delivery Patented LD90 Liquid Presence Detector and Isco pump revolution counting system delivers accurat, repeatable sample volumes time after time
Product Options


ISCO's GLS is a composite sampler which allows readings to be taken at time or flow based intervals. Samples can be collected in either 1 or 2.5 gallon glass or polyethylene bottles or if required a 2 gallon disposable ProPak bag. The GLS portable sampler has a very simple programming system with setup able to take less than a minute, allowing the field operator to start sampling with the touch of two buttons on the unit. Pressing the go button starts the sampling routine. The auto-sampler can be programmed to an alternative set up, without losing the original program setup.


  • Diameter of only 16.5 inches (42cm) allows the unit to fit down the smallest of manholes
  • Dry weight of less than 25lbs (12kg) makes the unit very mobile and easy to transport
  • Hinged handle makes for ease of carry
  • Patented LD90 liquid presence detector along with ISCO pump revolution counting system provide accurate and mean repeatable sample volumes every time.

Manufactured by: Teledyne ISCO
Model: ISCO GLS Composite Sampler

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Storm water monitoring
Permit compliance
Pre-treatment compliance


GLS Sampler
Size (Diam. x Height) 16.5 x 26.5 inches (42 x 67 cm)
Weight 24.5 lbs (11.1 kg) (dry, less battery)
Sample Bottles 1.0 or 2.5 gallon polyethylene or glass container.
Power Requirements 12 volts DC. (Supplied by battery or AC power converter.)
Intake Purge Purge before and after each sample.
Tubing Life Indicator Provides a message to change pump tubing.
Intake Suction Tubing Length 3 to 99 ft. (1 to 30 m), Vinyl or PTFE/FEP lined, ID 0.375 in. or 0.250 in
Pump Tubing Life 2,000 samples
Typical Repeatability ±10 ml
Maximum Lift 26 ft. (7.9 m)
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)
Sample Presence Detector Non-wetted, non-conductive sensor detects when liquid sample reaches the pump to automatically compensate for changes in head heights.
Operational Temperature 32° to 120°F (0° to 49°C)
Enclosure NEMA 4X, 6 IP67
Program Storage 1 sampling program (in non-volatile ROM)
Flow Meter Signal Input 5 to 15 volt DC pulse or 25 millisecond contact closure.
Number of Composite Samples Up to 500 maximum
Clock Accuracy 1 minute per month, typical, for Real Time Clock
Sampling Modes Uniform time, flow. (Flow mode is controlled by external flow meter pulses.)
Sample Frequency 1 minute to 9,999 minutes, in 1 minute increments. 1 to 9,999 flow pulses.
Sample Volumes Programmable 10 to 9,990 ml in 1 ml increments
Controller Diagnostics Tests for RAM, ROM, pump, and display



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