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The PURELAB Chorus gives you the chance to configure a solution that best suits your needs with the added benefit of flexibility should your future needs change. Ideal for a wide range of applications including sophisticated research and testing applications, qualitative analyses, feeding ultrapure water systems, glassware washing, autoclaves etc. The list of possible applications is endless!

Treated Water Specifications
APPLICATION Life Science Analytical Research General Science
Dispense Flowrate Up to 2.0 l/min 3 Up to 2.0 l/min 3 Up to 2.0 l/min 3
Inorganics @ 25°C 18.2 MΩ-cm 18.2 MΩ-cm 18.2 MΩ-cm
Total organic carbon (TOC) 1-3 ppb 1 1-3 ppb 1 3-10 ppb 1
Bacterial endotoxin <0.001 EU/ml - -
pH Effectively neutral Effectively neutral Effectively neutral
Particles Ultrafiltration ≥0.05µm ≥0.2µm 2
RNase <0.002 ng/ml - -
DNase <20 pg/ml - -
Purification pack capacity Liters to 18.2 MΩ-cm = 80,000/(µS/cm + (2.3 x ppm CO2)

1 Dependent on feed water - recommended feed <50ppb TOC.
2 With POU filter fitted.
3 When connected to Halo, Advanced or Flexible dispense module.

Dimensions and Weights
Dimensions Height minimum 435mm, Width 375mm, Depth 340mm
Weight 19kg (42lb) 19kg (42lb) 18kg (40lb)

Feedwater Requirement
Source - originally from potable supply, then pre-treated Preferably reverse osmosis (RO) produced by PURELAB Chorus 3 or filtered service deionization (SDI) or distilled.
Note: mixed bed or twin bed deionized supplies should be cation limited at exhaustion.
Fouling index (max) 1 for all models. A 5-10 micron membrane prefilter is recommended for all non-RO feeds
Service deionization (SDI)
1 MΩ-cm minimum resistivity at exhaustion
Reverse Osmosis (RO)
Recommended <30µS/cm
Free Chlorine 0.05 ppm max
TOC Recommended 50 ppb max (RO feed)
Carbon dioxide 30 ppm max
Silica 2 ppm max
Particulates Filtration down to 0.2 micron advisable to protect internal and/or point of use filters
Temperature 1 - 40°C - Recommended 10 - 15°C
Flowrate (maximum requirement) 130 l/hr (34 USG)
Drain requirements
(gravity fall with air gap).
Maximum during service
Up to 2 l/min (0.5 USG)
Feedwater pressure 0.7 bar (10 psi) maximum, 0.07 bar (1 psi) minimum 4
4 F it LA652 Pressure Regulator where feedwater pressure exceeds specified limits

Electrical Requirements
Mains Input 100 - 240V AC, 50 - 60Hz all models
System voltage 24V DC
Power consumption during peak demand (dispense) 90VA
Noise level during recirculation <40 dBA

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