Based on the optimization of industrial structure and driven by technological innovation, we have a good reputation in the high grade experiments ultrapure water system, laboratory water system equipment, Reverse Osmosis Water Purification Systems industry for many years with the attitude of honesty. We have achieved important strategic goals in stages and maintained sound operational development and continuous improvement of our competitive ability. We warmly welcome your joining and cooperation, and work together to add luster to the development of the industry. We hope that we can really have the strength to build our own century brand for sustainable development.
With LCD controlling system, 3 way water quality sensor, built-in 2 water tanks, 3 pump, and 2 stage RO system, Dura 12/24 series is sub-top choice of ultrapure water for high grade experiments.
With tap water inlet, its output ranges from 12 to 24 liters/hour. It can produce 2nd stage RO water and ultrapure water. The 2nd stage RO water’s conductivity can stay 1-5μs/cm, and the ultrapure water’s resistivity absolutely reaches to 18.2MΩ.cm. It completely meets the highest grade I standard of ASTM, CAP, CLSI, EP and USP.

Models:
Dura 12 / 24
Dura 12 / 24F
Dura 12 / 24V
Dura 12 / 24FV
Features and Advantages
Micro-computer control system with LCD display LCD (resolution: 240×128, dimension: 106×57mm), intuitively display the system running state and various real-time parameters. |
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Comprehensive monitoring system 3 way online water quality sensor, detect the quality of feed water, 2nd stage RO water / deionized water, and ultrapure water respectively. And warn once water quality´s standard exceeding. |
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Built-in 2 water tanks and 3 pumps Built-in 5.8 liters PE tank and 10 liters airtight plastic pressure water tank, save more lab space. Built-in 1st stage 2nd stage RO pump and circulating sanitizing pump. |
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Double stage reverse osmosis technology With 2 pumps, 2 RO membranes and buffer tank, system assures 2nd stage RO water quality´s stability from different source water, and achieves little drain and low running cost. |
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Easy-to-replacing cartridge Integrated design of pretreatment and subsequent purification unit. New card hawk type fast inserted interface, easy to replace. |
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4 door design and easy-to-maintaining Convenient to maintain system and replace cartridges. |
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Cartridges replacing alarm function, based on time and water quality, show cartridges´ used and residual life.
Multiple alarm function: no feed water, full water, water quality´s standard exceeding, and cartridge life ending.
Auto self-flushing of RO membrane function, extend RO membrane´s life.
Auto running data storing function through RS232/USB communication port to computer for 1 year at least.
System sanitizing procedure, achieve the disinfection of ultrapure water´s tube and valve.
System circulation function, achieve ultrapure water´s circulation to keep top quality of ultrapure water.
Level II password, protect all the parameters setting, and prohibit any unauthorized setting change.
Water dispensing function- timing and quality (time range: 1-99min, water quality range: 0.1-18.2MΩ.cm).
External water tanks is optional to meet different need and assure ample water-supply.
Whole plastic shell with high-strength, avoid rusting and keep clean, to meet GLP standard.
Tube and adapter with NSF authorization and top quality, reduce TOC level and assure ultrapure water´s quality.
Optimized pretreatment (including PP fiber, KDF and active carbon cartridge), effectively protect RO membrane.
RO module with DOW´s membrane, ensure long life, stable operation and high desalinization rate.
Ultrapure cartridge with DOW´s top polishing resin, ensure ultrapure water´s quality up to 18.2 MΩ.cm, with the lowest TOC level.
Double wavelength (185&254nm) ultraviolet lamp module, restrain bacteria´s increase and reduce TOC.
MWCO 5000D ultrafiltration module, effectively eliminate endotoxin, and suitable for precise cell cultivating and IVF.
(0.45+0.1)µm double layer PES terminal disinfection filter, assure that terminal pure water is absolutely axenic.
Flow Schematic

Specifications
Model | Standard | Eliminating endotoxin | Low TOC | Synthesizing |
Dura 12 | Dura 12F | Dura 12V | Dura 12FV | |
Dura 24 | Dura 24F | Dura 24V | Dura 24FV | |
Output -2nd stage RO water* | 12 or 24 liters/hour | |||
Output -ultrapure water | Up to 2 liters/minute (when tank is full) | |||
Ultrapure water quality | ||||
Resistivity (25°C) | 18.2MΩ.cm | |||
TOC* | <10ppb | <10ppb | <3ppb | <3ppb |
Bacteria | <0.01cfu/ml | |||
Particle (>0.01µm) | <1/ml | |||
Endotoxin | N/A | >0.001Eu/ml | N/A | >0.001Eu/ml |
RNases | N/A | <1pg/ml | N/A | <1pg/ml |
DNases | N/A | <5pg/ml | N/A | <5pg/ml |
RO water quality | ||||
Conductivity - 1st stage RO water | Feed water conductivity×5%* | |||
Conductivity - 2nd stage RO water | 1-5µs/cm* | |||
Feed water requirements | Tap water, temperature: 5-45°C, pressure: 1.0-4.0Kgf/cm2 | |||
Dimension and weight | Length×Width×Height: 545×470×610mm / Weight: 25Kg | |||
Electrical requirements | AC200-240V, 50/60Hz | |||
Power | 240W | |||
Standard configuration | Main body (Including 1 set of cartridge) + built-in 12 liters pressure tank | |||
Remarks:
*The value will be influenced by temperature and feed water’s quality.
Cartridges
Item no. | Commodity | Approximate replacement term /set |
D-PP1 | Pretreatment cartridge | 2-6 months |
D-AK | KDF+ granular active carbon mixed cartridge | 12 months |
D-AC2 | Active carbon block cartridge | 6 months |
D-RO-50 | 50 GPD reverse osmosis membrane | 12-24 months |
D-RO-100 | 100 GPD reverse osmosis membrane | 12-24 months |
D-RO-150 | 150 GPD reverse osmosis membrane | 12-24 months |
D-RO-200 | 200 GPD reverse osmosis membrane | 12-24 months |
D-Uvlamp-14W | (254&185) nm wavelength uv lamp | 9000 hours |
D-Decart | Mixed bed resin cartridge | 5000 liters pure water |
D-Pocart4 | Ultrapure polishing resin cartridge | 5000 liters pure water |
D-Ufcart | Eliminating endotoxin uf cartridge | - |
D-Tefit | (0.45+0.1µm) terminal filter | - |
Remarks:
*The quality of inlet water will effect cartridge’s life.
*When inlet water’s TDS>200ppm, Replace term of filter will be suggested to decrease, or outside pre-filter is added. Or water quality and life of ultrapure cartridge will be affected.
HHitech-Products
Designing and manufacturing under ISO certification, top quality controlling commitment, ensure compliance with CE standards of EU, guarantee completely meeting with the highest grade I water standards of ASTM, CAP, CLSI, EP and USP.
HHitech-Service
As a responsible manufacturer with rich experience, operating in good faith, and the concept of common development, adhering to the customer-oriented and customer-needs, HHitech promises to provide professional comprehensive pre-sales and after-sales service in the whole business.
■ 12 months warranty except for consumables.
■ Timely guide for installation, usage and maintenance.
■ Free and continuous upgrade service for sold products.
At present, we have established extensive business relationships with many domestic and foreign Large Volume Lab Water Machine Chemical Analysis Ultrapure Water System enterprises. Talent is the centralized embodiment of the core competitiveness of the company, we will treat every employee who contributes to the company with a more open and sincere attitude. We are people-oriented, attentive service, continuous innovation of corporate culture, so that our company continues to move forward to success.
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