Optima-QLS All Season Refrigerated Composite/Sequential Vacuum Wastewater Sampler

Wide range of bottle configurations and QCEC reliability

Optima QLSThe model Optima-QLS is a heavy duty, All Season refrigerated composite/sequential vacuum wastewater sampler. With a fiberglass base and body, the All Season unit is suitable for corrosive environments and severe outdoor conditions. This sampler relies on proven vacuum pump technology to deliver high sample integrity and reliable performance. The vacuum pump exceeds EPA transport velocity requirements and generates a stronger pulse. The maximum vertical lift is 28 feet. This unit uses a self learning smart sampling system. A two year warranty is standard.​


Sampler Selection GuideBrochure
Sampler Source BookBrochure
Optima Vacuum Sampler DatasheetDatasheet
All Season QLS Refrigerated Samplers ManualUser Manual


When you purchase instruments from Teledyne ISCO, you not only receive innovative, high quality products, you also receive excellent customer service and product support. Your initial purchase is only the beginning of Teledyne ISCO's ongoing commitment to their customers.


Optima-QLS All Season Refrigerated Composite/Sequential Wastewater Sampler

Size (H x W x D): 49" x 25.5" x 25.5"
​Weight (Dry):​190 lbs.
​Refrigeration Body:​2.5", fully insulated cabinet
Power Required: 120 VAC

​Temperature Limit:

​32° to 122°F; -20° to 122°F with optional heater
​Corrosion Protection;​Refrigerated copper lines, phenolic coated
​Intake Tubing:​Vinyl 3/8 in. (.95 cm)
​Containers:​1, 2.5, 3, 5 gallon composite; 500 mL or 1000 mL sequential
​Maximum Lift:28 ft. (8.6 m)
​Sample Transport Velocity:​Greater than 3.25 FPS @ 20' with a 3/8" (.95 cm) tubing


±4 ml
​Programmable Functions:

​Pre-purge: 0 - 99 sec.

Programmable sample size: 20 - 500mL in 1mL increments

Post-purge: 1 - 99 sec.

Auto shut-off

Delay start

Flow inputs: pulses, 4-20mA, 0-10 VDC, 0-5 VDC

Sampling interval: 1 - 9999 min.

Sample size: 15 mL - 400 mL

​Controller:​Microprocessor control
​Warranty:​Two years from shipment

​For a full list of product specifications, see the datasheet.


​ ​


Standard Features
  • Heavy duty piston vacuum pump
  • 20 - 500 mL adjustable sample container
  • Self calibrating sample size
  • 115V operation
  • Pre-sample/post-sample purge -- 0-99 sec.
  • Auto shut-off
  • Delay start -- 1 thru 9999 min.
  • Constant sampling interval 1 thru 9999 min.
  • Variable sampling -- Time/Flow (1-24)
  • Real Time Clock
  • Inputs (pulses, 4-20mA, 0-10VDC, 0-5VDC)
  • Start/Stop programming
  • Data logging
  • Pass code protection
  • Alarm output optional