Puredrop - Water Purification Systems

Performance parameters of GC 2000

  • The PUREDROP Series offers a versatile range of ultrapure water systems tailored for laboratory applications. Each model is designed to meet specific
    user needs, from small-volume HPLC use to multi-grade water production for regulated industries.
  • The industry’s most complete water purification solution for highly regulated applications.
  • When your application requires the ultimate in water purity, PUREDROP provides the perfect solution. Consistently delivering water purity of 18.2 MΩ·cm
    and underpinned by advanced technologies, the PUREDROP enables you to focus on attaining accurate results while ensuring an uninterrupted workflow.

Typical Scientific Applications

  • ICP-MS (Inductively Coupled Plasma Mass Spectrometry)
  • Molecular biology techniques
  • Ultra-trace analysis
  • Electrochemistry
  • Electrophoresis
  • GFAAS (Graphite Furnace Atomic Absorption Spectrophotometry)
  • HPLC
  • IC (Ion Chromatography)
  • ICP-AES (Inductively
  • Coupled Plasma
  • Atomic Emission Spectrometry)
  • Mammalian and bacterial cell culture
  • Molecular biology
  • Plant tissue culture
  • Qualitative analysis

Features of Mini

  • Many Laboratories require ultrapure water everyday- for HPLC or for other instrumental analysis- but only as small volumes at a time, up to a total of a few liters at the most.
  • However, this is no reason to do without professional, freshly prepared ultrapure water and buy expensive HPLC water. After all with the repeated taking of small volumes from an HPLC water container, the quality of the water and the TOC-value no longer fulfill the specifications. The ultrapure water is no longer ultrapure!
  • Always fresh. Always available in the volume required. Always with the required quality. And always for only a few cents per liter!
  • Compact and efficient for labs requiring small volumes.
  • Fresh ultrapure water on demand, ideal for HPLC.
  • Internal 6L tank — no external tank needed.
  • Cost-effective alternative to bottled HPLC water.
System Components
1. Solenoid Valve
2. Conductivity Sensor
3. Pre-treatment Module
4. Boost Pump
5. RO Module
6. Ball Valve
7. Dual Wave UV Cartridge
8. Purification Module
9. Ultra-Purification Module
10. Micro-Filtration Cartridge
11. Point-of-use Filter
12. Internal Water Reservoir – 6L

Puredrop Mini - Technical Specifications

Model PUREDROP Mini
Feed Water Requirement
SourceTap water
Conductivity*<2000 µs/cm
Hardness**<450 ppm as CaCO₃
Pressure0.05–0.5 MPa (7–72 psi)
Temperature5–40°C
Purification Water (Class III)
Ionic Rejection>95%
Bacteria Rejection>99%
Conductivity1–20 µs/cm (RO2–5 µs/cm)
Productivity Rate30 L/h
Ultra-purification Water (Class I)
Resistivity at 25°C18.2 MΩ·cm
Conductivity at 25°C0.055 µs/cm
TOC Level***1–5 ppb
Endotoxin (Pyrogens)N/A
Particulate (>0.02 µm)<1 pc/ml
Bacteria***<0.1 cfu/ml
Rnase/Dnase**N/A
Ultra-purification Water (Class I)
Manual dispense flow rate1.2–1.5 L/min
Automatic dispense volume100–60000 ml
Electrical Requirements
Electrical Voltage220V ±10%
Electrical Frequency50Hz
Net Weight – Main units32 kg
Net Weight – Water tankN/A
External Dimensions (Main units)315 × 525 × 570 mm
External Dimensions (Water tank)N/A
  • If feed water quality is poor (Conductivity >1000 µs/cm), strengthened pretreatment module and RO-2 type is highly recommended
  • When hardness of feed water is high (>450 ppm as CaCO₃), 0.5T water softener is recommended
  • Dual wave UV module need to be adopted. Also dependent on feed water, recommended feed TOC <30 ppb

Puredrop N

System Components
1. Solenoid Valve
2. Conductivity Sensor
3. Pre-treatment Module
4. Boost Pump
5. RO Module
6. Water Tank
7. Ball Valve
8. Dual Wave UV Cartridge
9. Purification Module
10. Ultra-Purification Module
11. Ultra-Filtration Cartridge
12. Point-Of-Use Filter
13. Remote Water Dispenser

Puredrop N - Specifications

Specification Details
ModelPUREDROP N 15UV
Feed Water Requirement
SourceTap water
Conductivity*<2000us/cm
Hardness**<450ppm as CaCO3
Pressure0.05~0.5MPa (7~72psi)
Temperature5~40°C
Purification Water (Class III)
Ionic Rejection>95%
Bacteria Rejection>99%
Conductivity1~20us/cm (RO-2.5us/cm)
Productivity Rate15L/h
Ultra-purification Water (Class I)
Resistivity at 25°C18.2MΩ·cm
Conductivity at 25°C0.055us/cm
TOC Level***1~5ppb
Endotoxin (Pyrogens)****<0.001 EU/ml
Particulate (≥0.02um)<1pc/ml
Bacteria****<0.1cfu/ml
Rnase / Dnase**N/A
Manual dispense flow rate1.5~2.0L/min
Automatic dispense volume100~60000ml
Electrical Requirements
Electrical Voltage110V/220V ±10%
Electrical Frequency50Hz/60Hz
Net Weight
Main units24kg
Water tank (30L)7kg
External Dimensions (W×D×H)
Main units315×525×570mm
Water tank (30L)380×380×595mm
  • If feed water quality is poor (Conductivity > 1000 μs/cm), strengthened pretreatment module and RO-2 type is highly recommended
  • When hardness of feed water is high (> 450 ppm as CaCO₃), 0.5 T water softener is recommended
  • Dual wave UV module needs to be adopted. Also dependent on feed water, recommended feed TOC < 30 ppb
  • Ultra-filtration module needs to be adopted. Feed water needs to be satisfied as above

Features of Puredrop + - NE/NET

  • The industry’s most complete water purification solution for highly regulated applications.
  • When your application requires the ultimate in water purity, PUREDROP-NE Series provides the perfect solution. Consistently delivering water purity of 18.2MΩ.cm and underpinned by the advanced technologies, the PUREDROP-NE enables you to focus on attaining accurate results while ensuring an uninterrupted work flow. Features of PUREDROP + – NE/NET PUREDROP – Water Purification Systems
  • Delivers Class I, II, and III water in one system.
  • Class II high-purity stage for intermediate-grade use.
  • Enhanced organic compound removal.
  • Ideal for research centers with diverse purity needs.
  • Dual-wave UV and TOC monitoring ensure <5ppb TOC.
  • Includes EDI and ultrafiltration modules for maximum
    purity.
System Components
1. Solenoid Valve
2. Conductivity Sensor
3. Pre-treatment Module
4. Boost Pump
5. RO Module
6. Water Tank
7. Ball Valve
8. Dual Wave UV Cartridge
9. Ultra-Purification Module
10. Ultra-Filtration Cartridge
11. Point-Of-Use Filter
12. Remote Water Dispenser
13. TOC Monitor Cell*
14. EDI Module

PUREDROP + - NE/NET Specifications

Feed Water Requirement

Parameter Specification
Source Tap water
Conductivity* <2000 µs/cm
Hardness** <450 ppm as CaCO₃
Pressure 0.05–0.5 MPa (7–72 psi)
Temperature 5–40 °C

Purification Water (Class III)

Parameter Specification
Ionic Rejection ≥95%
Bacteria Rejection ≥99%
Conductivity 1–20 µs/cm
Productivity Rate 30 L/h

High Quality Purification Water (Class II)

Parameter Specification
Resistivity at 25 °C 10 MΩ·cm
TOC <30 ppb
Dissolved Organic <0.1 ppm
Productivity Rate 15 L/h

Ultra-purification Water (Class I)

Parameter Specification
Resistivity at 25 °C 18.2 MΩ·cm
Conductivity at 25 °C 0.055 µs/cm
TOC Level*** 1–5 ppb
Endotoxin (Pyrogens)**** <0.001 EU/ml
Particulate (>0.02 µm) <1 pc/ml
Bacteria** <0.1 cfu/ml
Rnase / Dnase** Free

Dispense Information

Parameter Specification
Manual Dispense Flow Rate 1.5–2.0 L/min
Automatic Dispense Volume 100–60000 ml

Electrical Requirements

Parameter Specification
Electrical Voltage 110 V / 220 V ±10%
Electrical Frequency 50 Hz / 60 Hz

Packing Information

Parameter Specification
Net Weight – Main Units 35 kg
Net Weight – Water Tank (30 L) 7 kg
External Dimensions (W×D×H) – Main Units 315×525×570 mm
External Dimensions (W×D×H) – Water Tank (30 L) 380×380×595 mm
  • If feed water quality is poor (Conductivity > 1000 μs/cm), strengthened pretreatment module and RO-2 type is highly recommended
  • When hardness of feed water is high (> 450 ppm as CaCO₃), 0.5 T water softener is recommended
  • Dual wave UV module needs to be adopted. Also dependent on feed water, recommended feed TOC < 30 ppb
  • Ultra-filtration module needs to be adopted. Feed water must meet the above requirements

Smart Comparison Table

Feature Puredrop Mini Puredrop N Puredrop NE/NET
Water Grades Class III, I Class III, I Class III, II, I
Ultrapure Water Quality 18.2 MΩ·cm, TOC 1–5 ppb 18.2 MΩ·cm, TOC 1–5 ppb 18.2 MΩ·cm, TOC 1–5 ppb
High Purity (Class II) Stage ✓ 10 MΩ·cm, TOC <30 ppb
Output Flow Rate (Manual) 1.2–1.5 L/min 1.5–2.0 L/min 1.5–2.0 L/min
Productivity Rate (Class III) 30 L/h 30 L/h 30 L/h
Productivity Rate (Class II) N/A N/A 15 L/h
TOC Monitoring
EDI Module
Endotoxin Removal
Particulate Removal (≥0.02µm)
Bacteria Removal <0.1 cfu/ml <0.1 cfu/ml <0.1 cfu/ml
Resistivity @25°C 18.2 MΩ·cm 18.2 MΩ·cm 18.2 MΩ·cm
Conductivity @25°C 0.055 µS/cm 0.055 µS/cm 0.055 µS/cm
Manual Dispense Volume 1.2–1.5 L/min 1.5–2.0 L/min 1.5–2.0 L/min
Automatic Dispense Volume 100–60000 ml

TOC Monitoring Facility

EDI Module (Electrode ionization)

Working Principle :

  • Combines ion exchange resins with ionselective membranes and a direct electric current.
  • The resin removes ions from water; the electric field moves these ions through membranes into a waste stream.
  • This continuously regenerates the resin without chemical regeneration, making the process eco-friendly and consistent.

Benefits:

  • Continuous ultrapure water production (up to 18.2 MΩ·cm) without downtime for regeneration.
  • Eliminates chemical handling (no acids/alkalis for resin regeneration).
  • Long service life and reduced operating costs.
  • Stable performance for high-demand labs or industrial use.

Working Principle :

  • Water passes through a UV oxidation chamber (usually 185 nm wavelength).
  • The UV light oxidizes organics into CO₂, which dissolves into the water as carbonic acid.
  • A conductivity sensor measures the increase in conductivity, which is directly proportional to TOC content.

Benefits:

  • Real-time quality control for organics in purified water.
  • Detects early contamination from bacterial by-products, leaching from components, or feed water issues.
  • Critical for GLP/GMP compliance and meeting USP <643> / EP 2.2.44 standards.
  • Enhances analytical accuracy for sensitive assays.

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