PURELAB Chorus 2

When Type II water is all you need, then PURELAB Chorus 2 (RO/DI) is the reliable solution with the flexibility to suit your requirements.

Modular. Flexible. Reliable.

Reliable delivery of Type II water purity

When Type II water is all you need, then PURELAB Chorus 2 (RO/DI) is the reliable solution with the flexibility to suit your requirements. A range of storage reservoirs designed to maintain the optimum purity of stored purified water in a choice of 15, 30, 60 and 100-liter capacities.

  • Deionization The Reverse Osmosis feed contains optimized resin mixes to maximize consumables capacity.
  • Simplicity Simple to install, operate and maintain with a clear indication of water purity.
  • Economical Optional CO2 removal from the purified water (post RO) increasing the life of downstream consumables. Option to reduce water consumption for low hardness feed waters.
  • Modular Multiple PURELAB Chorus 2 units can feed into one reservoir and systems can be expanded post-installation. As such, the cost of future upgrades is minimized. Duplex systems also guarantee maximum uptime.


Ideally suited for: Stills Replacement, Stills Replacement, Buffer Preparation, pH solution Preparation, Washing / Rinsing, Autoclaves, General Chemistry, Hydroponics, Steam Generators, Sterilizer Feed, Feed to Type I polishers.


Purelab chorus 2 adding modules


PURELAB Chorus ELGA Testing

Frequently Asked Questions (FAQs)

What is a PURELAB Chorus 2 system?

A PURELAB Chorus 2 system is designed as a solution for stills replacement . It is designed to dispense pure water directly from a tap resource. PURELAB Chorus 2 can dispense up to 480l of lab water per day.

What type of applications are suitable for water dispensed from the PURELAB Chorus 2 system?

A PURELAB Chorus 2 system is designed for applications including buffer preparation, histology, general chemistry, electrophysiology, microbiological analysis, radioimmunoassays and spectrophotometry.

What are the benefits of the PURELAB Chorus 2 system?

PURELAB Chorus 2 is designed to be adaptable to customers' growing needs. It has the ability to increase Type II Pure water make up by adding modules - up to 80l/hr make up rate. It is networked and designed to communicate information across the whole system configuration maximising uptime during maintenance or system failure. It is also easy to use and maintain.

How many product variants are available?

There are 4 product variants- 10l/hr and 20l/hr- with or without boost pump.

What storage reservoirs are available with the PURELAB Chorus 2 system?

The PURELAB Chorus 2 system offers customers a choice of 4 reservoir sizes; 15l, 30l, 60l and 100l.

Product SpecificationsPURELAB Chorus 2 (RO/DI) 10 l/hrPURELAB Chorus 2 (RO/DI) 20 l/hr
Inorganics (resistivity at 25°C) 1 to >10 MΩ.cm 1 to >10 MΩ.cm
Organics (TOC) <30 ppb <30 ppb
Bacteria <5 CFU/ml <5 CFU/ml
pH Effectively neutral Effectively neutral
Particles >99% rejection >99% rejection
Daily usage (max) 240 l/day 480 l/day
Daily usage (min) 10 l/day 10 l/day
Delivery flow rate 10 l/hr 20 l/hr
Degasser Module
Part Number
Pre-treatment pack render image
Pre-treatment Pack
Part Number
Life expectancy
6 months
Impact of Overuse

Chlorine, chloarmine and organics remain, increasing the burden on downstream consumables which will need more frequent and expensive changes

Reverse Osmosis
Reverse Osmosis
Part Number
Life expectancy
24-36 months
Impact of Overuse

High levels of organics and inorganics remain in the water reducing the functional life of the DI pack

Composite Vent Filter
Composite Vent Filter
Part Number
Life expectancy
12 months
Impurities Removed
Impact of Overuse

Increase in airborne contaminants and potential recontamination of purified water

DI pack render image
DI Pack
Part Number
Life expectancy
12 months
Impact of Overuse

Weakly bound ions are released back into the water reducing resistivity

PURELAB Chorus Storage Reservoirs

Our unique range of storage solutions is designed to maintain the optimum purity of stored water and provide effective protection against airborne contaminants. They are designed to accommodate PURELAB Chorus water purification systems by maximizing the space in a single integral, compact unit or to sit independently to suit the layout of your laboratory.

  • Multiple positioning  Multiple positioning/mounting options to suit your laboratory layout.
  • Polyethylene construction  Inert opaque polyethylene construction with a smooth inner surface.
  • Dispense tap  Positioned to minimize accidental operation or damage (choice of positions).
  • Advanced vent filtration  Prevents the ingress of airborne bacteria, particulates, organic vapors and CO2.
  • Autofill  Monitoring of reservoir water levels with automated refill ensures purified water is always available.
  • Hygienic Overflow  Hygienic overflow in the unlikely event of water system malfunction.
  • Easy display Direct display of stored purified water on the front of the reservoir for easy identification.
15 liter reservoir
PURELAB® Reservoir 15 l

Capacity: 15 liters

Dimensions: 470 (h) x 376 (w) x 340 (d)

Flow Rate: 6 l/min

30 liter reservoir
PURELAB® Reservoir 30 l

Capacity: 30 liters

Dimensions: 660 (h) x 376 (w) x 340 (d) 

Flow Rate: 8 l/min

60 liter reservoir
PURELAB® Reservoir 60l

Capacity: 60 liters

Dimensions: 570 (h) x 532 (w) x 522 (d)

Flow Rate: 10 l/min

100 liter reservoir
PURELAB® Reservoir 100l

Capacity: 100 liters

Dimensions: 806 (h) x 532 (w) x 522 (d)

Flow Rate: 10 l/min

To learn more about the benefits of PURELAB Chorus 2 or any other product, contact us and we’ll put you in touch with one of our Approved Partners and Lab Water Specialists.

Find An ELGA Approved Partner & Laboratory Water Specialist Today!

PURELAB Chorus Software Version 4.0.0 includes bug fixes and improvements. Click here to download now

Why Choose ELGA?

  • ELGA LabWater has been a trusted name in pure and ultrapure water since 1937. We help you achieve consistent, accurate results
  • Our dedication to pure water, and only pure water, is a guarantee that we will provide you with the best solutions and the best service
  • We believe in giving you choice in how you use our laboratory water purification solutions, supported by excellent service and support