ELGA LabWater Purification Systems in Pakistan
ELGA LabWater, a Veolia Water Technologies company, specializes in laboratory water purification systems for applications ranging from routine laboratory use to highly sensitive analytical and life-science work.
CWTC supplies and supports ELGA PURELAB water purification systems in Pakistan, providing solutions for Type I ultrapure water, Type II pure water and Type III reverse-osmosis water for research, pharmaceutical, industrial, food, university and quality-control laboratories.
Pure & Ultrapure Laboratory Water
From RO water for general laboratory use to 18.2 MΩ·cm ultrapure water for HPLC, LC-MS, molecular biology and other critical applications.
PURELAB Laboratory Water Systems
The ELGA PURELAB range allows laboratories to select a water purification system according to the required water quality, daily volume, feed-water source, application and monitoring requirements. CWTC's core range in Pakistan focuses on PURELAB Quest, PURELAB Flex 3 and PURELAB Chorus 1 Complete.

PURELAB Quest / Quest UV
Compact tap-fed laboratory water purifier providing Type I, Type II and Type III water from a single system.
- Type I, II & III water
- 18.2 MΩ·cm Type I water
- Up to 1.2 L/min dispensing
- Compact 232 mm width
- Quest UV option for low-organic applications

PURELAB Flex 3
Tap-to-ultrapure laboratory water purification system designed for laboratories requiring high-quality Type I water at lower daily volumes.
- 18.2 MΩ·cm Type I water
- TOC <5 ppb
- Real-time TOC monitoring
- Up to 2 L/min dispense
- Up to 10 L/day recommended use

PURELAB Chorus 1 Complete
Higher-capacity tap-to-ultrapure system for laboratories requiring 18.2 MΩ·cm Type I water with continuous recirculation and TOC monitoring.
- Tap to Type I ultrapure water
- 18.2 MΩ·cm resistivity
- TOC <5 ppb
- Real-time TOC monitoring
- Up to 20 L/hour production
What Type of Laboratory Water Do You Need?
Laboratory water purification systems are normally selected according to the required water grade rather than by brand name. Type I, Type II and Type III water serve very different laboratory applications.
Type I Ultrapure Water
Up to 18.2 MΩ·cmUsed for critical analytical and life-science applications including HPLC, UHPLC, LC-MS, ICP-MS, molecular biology, PCR, sequencing, cell culture and other sensitive workflows.
Type II Pure Water
General laboratory pure waterSuitable for preparation of buffers, reagents and culture media, general chemistry and as feed water for laboratory instruments and Type I purification systems.
Type III RO Water
Reverse-osmosis laboratory waterUsed for glassware rinsing, water baths, autoclaves and other routine applications, and commonly used as feed water for higher purity laboratory water systems.

PURELAB Quest – Type I, II & III Water from One System
PURELAB Quest is an economical and compact laboratory water purification system that produces all three main laboratory water grades directly from potable tap water. It is particularly suited to smaller laboratories and satellite spaces where several water qualities are required without installing multiple purification systems.
| Water Quality | Type I, Type II and Type III |
|---|---|
| Type I Resistivity | 18.2 MΩ·cm at 25°C |
| Type I TOC – Quest UV | <5 ppb |
| Dispense Flow | Up to 1.2 L/min |
| Recommended Type I / II Volume | Up to approximately 10 L/day |
| Recommended Type III Volume | Up to approximately 30 L/day |
PURELAB Flex 3 – Tap-to-Ultrapure Water
PURELAB Flex 3 is designed for laboratories that require a reliable supply of Type I ultrapure water directly from tap water. The system combines reverse osmosis, purification, recirculation and point-of-use dispensing in a compact platform.
With 18.2 MΩ·cm resistivity and real-time Total Organic Carbon monitoring, PURELAB Flex 3 is suited to analytical and life-science laboratories where confidence in both ionic and organic water purity is important.
| Water Grade | Type I Ultrapure |
|---|---|
| Feed Water | Potable tap water |
| Resistivity | 18.2 MΩ·cm at 25°C |
| TOC | <5 ppb |
| Dispense Flow | Up to 2.0 L/min |
| Recommended Daily Volume | Up to approximately 10 L/day |
| Bacterial Endotoxin* | <0.001 EU/ml |
| DNase* | <5 pg/ml |
| RNase* | <1 pg/ml |
*Dependent on appropriate point-of-use filtration and system configuration.


PURELAB Chorus 1 Complete – High-Capacity Ultrapure Water
PURELAB Chorus 1 Complete provides a complete tap-to-ultrapure laboratory water solution for laboratories with higher daily water requirements. It combines pretreatment, reverse osmosis, purification, storage and final ultrapure polishing within a configurable system.
The system delivers 18.2 MΩ·cm Type I water with real-time TOC monitoring and continuous recirculation, making it particularly suitable for laboratories that require higher throughput together with continuous visibility of water quality.
| Water Grade | Type I Ultrapure |
|---|---|
| Feed Water | Potable tap water |
| Resistivity | 18.2 MΩ·cm at 25°C |
| TOC | <5 ppb |
| TOC Monitoring | Real time |
| Production Flow | Up to 20 L/hour |
| Dispense Flow | >1.5 L/min |
| Reservoir Options | Multiple storage capacities available |
Laboratory Water Purification Applications
Water is one of the most frequently used laboratory reagents. The required purification level depends on the analytical method, sensitivity and potential contaminants that can affect the result.
HPLC & UHPLC
Type I ultrapure water for mobile phases, standards, sample preparation and high-performance liquid chromatography workflows.
LC-MS & Mass Spectrometry
Low-organic ultrapure water for sensitive chromatographic and mass-spectrometric analyses.
ICP-MS & Trace Analysis
High-purity laboratory water for trace and ultra-trace elemental analytical workflows.
Molecular Biology & PCR
Ultrapure water for PCR, sequencing and other molecular-biology applications.
Cell & Tissue Culture
Purified water for sensitive biological workflows, media preparation and cell-culture applications.
Pharmaceutical Laboratories
Laboratory water for analytical QC, HPLC, reagent preparation and regulated workflows.
Buffers & Reagents
Type II or Type I water depending on method sensitivity and downstream analytical technique.
General Laboratory Water
Type III RO water for rinsing, autoclaves, laboratory washing and feed to higher-purity systems.
Searching for a Milli-Q or Laboratory Ultrapure Water System?
The term “Milli-Q water” is sometimes used informally in laboratories when the actual requirement is Type I ultrapure laboratory water. The correct system should be selected according to the required water specification and application, not simply the familiar brand name.
ELGA PURELAB as an Alternative Laboratory Water Platform
Laboratories comparing a Milli-Q®, Millipore® or Merck® water purification system can also evaluate ELGA PURELAB systems according to the same core requirements: feed-water quality, Type I / II / III grade, resistivity, Total Organic Carbon (TOC), microbiological purity, daily consumption, production rate and point-of-use requirements.
If your specification requests a “Milli-Q water purification system” for HPLC, LC-MS, PCR or general laboratory use, the underlying requirement may be an 18.2 MΩ·cm Type I ultrapure water system. PURELAB Quest, Flex 3 or Chorus 1 Complete can then be evaluated according to daily volume and water-quality specifications.
PURELAB Quest / Quest UV
PURELAB Flex 3
PURELAB Chorus 1 Complete
Milli-Q®, Millipore® and Merck® are trademarks or brand names belonging to their respective owners. They are referenced solely to help laboratories compare water-purification requirements. ELGA LabWater and CWTC are independent of these brands.
Laboratory Water Purification FAQs
What is an ultrapure water system?
An ultrapure laboratory water system produces highly purified Type I water for sensitive analytical and life-science applications. Type I water normally reaches a resistivity of 18.2 MΩ·cm at 25°C and requires tight control of ionic, organic and microbiological contamination.
Is Milli-Q water the same as Type I ultrapure water?
Milli-Q is a commercial brand name rather than the generic scientific name for a water grade. In many laboratory specifications the intended requirement is actually Type I ultrapure water.
What is an alternative to a Milli-Q or Millipore laboratory water system?
ELGA PURELAB is an independent laboratory water purification platform covering Type I, Type II and Type III water. PURELAB Quest, Flex 3 and Chorus 1 Complete can be evaluated where a laboratory is comparing different manufacturers.
Which ELGA system is suitable for HPLC water?
HPLC generally requires Type I ultrapure water with very low ionic and organic contamination. PURELAB Flex 3 and PURELAB Chorus 1 Complete both provide 18.2 MΩ·cm water with TOC below 5 ppb. PURELAB Quest UV can also provide Type I water for smaller requirements.
Which PURELAB system is best for a small laboratory?
PURELAB Quest is suitable where a smaller laboratory needs Type I, Type II and Type III water from one compact tap-fed system. PURELAB Flex 3 is more appropriate where the main requirement is low-volume Type I ultrapure water with real-time TOC monitoring.
Which ELGA system is suitable for higher ultrapure water demand?
PURELAB Chorus 1 Complete is designed for higher throughput and provides a complete tap-to-Type-I solution with 18.2 MΩ·cm resistivity, real-time TOC monitoring, recirculation and configurable storage and dispensing.
What is TOC in a laboratory water purification system?
TOC means Total Organic Carbon. It is an important measure of organic contamination in purified water, particularly for sensitive analytical applications such as chromatography.
What is the difference between RO water and DI water?
Reverse osmosis removes a large proportion of dissolved salts, particles and organic contaminants. Deionization removes dissolved ionic contaminants and is used as part of the process required to produce higher-grade laboratory water.
Can CWTC supply and support ELGA LabWater systems in Pakistan?
Yes. CWTC supplies ELGA LabWater purification systems in Pakistan and supports customers with system selection, quotation, installation, operator training, consumables, preventive maintenance and technical service.
ELGA LabWater Supply & Support in Pakistan
CWTC represents and supports ELGA laboratory water purification systems across Pakistan. Correct system selection is based on feed-water quality, required water grade, daily consumption, analytical application and water-quality monitoring requirements.
CWTC can assist laboratories from initial system selection through installation and routine operation, including purification packs, filters and other system consumables.
System Selection
Selection according to Type I, II or III water quality, application and daily volume.
Installation & Training
Local installation support and operator familiarization for ELGA PURELAB systems.
Consumables
Support for purification packs, point-of-use filters and scheduled consumable replacement.
Technical Service
Preventive maintenance and technical support through CWTC in Pakistan.