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Omgekeerde Osmose


De economische waterzuivering voor :

Thermo Scientific Barnstead omgekeerde osmose systemen zijn ontwikkeld om hoogwaardig zuiver laboratoriumwater te produceren van kraanwater voor centrale watervoorziening van wasmachines, autoclaven en ultrazuiver water systemen, met aanvullende mogelijkheden voor handmatige afname met een bereik van 40 l/h tot 15.000 l/h.

Flexibility !

  • Endless mounting choices – on the bench, on the wall, or free-standing

Endless mounting choices – on the bench, on the wall, or free-standing

Convenience !

  • Dispense easily from the tank

Dispense easily from the tank

Innovation !

  • Thermo Scientific Barnstead LabTower RO system allows the tank level to be set manually



Thermo Scientific Barnstead pure water purification system selector guide


Technology / Feature

Pacific RO

LabTower RO

Flexible mounting options

Integrated 100 L reservoir

Capacity Optimal amount of water to use daily to sustain reasonable cartridge life.

3, 7, 12, 20, 40 L / uur

20-40 L / uur

Features Upgradable (If capacity needs increase, the system can be upgraded)



Feed water monitoring (Alerts you to fluctuations in feed water quality)



Integrated 100 L Reservoir (Offers a stand-alone configuration for labs with little bench space)



Pretreatment integrated into system



Prijs, excl. BTW (indicatie) Voor de exacte prijs (met toebehoren), gelieve ons vrijblijvend te contacteren !

Vanaf 3.150,00 €

Vanaf 7.490,00 €

Reverse osmosis is economical

Reverse osmosis is the most economical method to remove up to 99% of impurities in feed water. The RO membrane is semi-permeable with a thin microporous surface that rejects virtually all dissolved materials including inorganic solids, organics, particles and microorganisms.

Reverse osmosis water is versatile

RO water can be used to prepare microbiological buffers and chemical reagents. Additionally, it is a great option for use in general laboratory equipment, such as water baths, humidifiers, and autoclaves.

Reverse osmosis is effective

As the feed water passes through the RO membrane, impurities deposit on the surface of the RO membrane and are flushed away to the drain. The result is purified product water free of up to 99% of its impurities. The specific rejection rates of all the impurities are shown in each of the product specifications.

Feed water factors

Certain characteristics of your feed water directly relate not only to membrane performance and lifetime but also directly impact the quality of your product water. Take advantage of our Thermo Scientific H2O Select Analysis Kit, our free comprehensive testing program which will analyze your feed water to ensure optimum RO performance.

The natural osmosic flow of water through a semi-permeable membrane from less concentrated solutions to more concentrated solutions. Reverse osmosis is achieved when external pressure is applied to reverse this natural flow, as shown on the right.

Our technical service experts are a great resource for any feed water questions you might have.

Here is an explanation of key characteristics impacting RO performance:


Volumes listed for the reverse osmosis product water are based on a feed water temperature of 15°C (59°F). For every 1°C below 15°C (59°F), the quantity of product water is reduced by 3%. Additionally, if the feed water temperature goes beyond 25°C (77°F), the RO membrane may be damaged. We recommend a hot and cold water mixing valve to regulate the temperature to 15°C (59°F).

Alkalinity and calcium

Carbonates, bi-carbonates, hydroxides and calcium impurities in your feed water contribute to RO membrane scaling. Both the Thermo Scientific Barnstead Pacific RO and Thermo Scientific Barnstead LabTower RO systems have pretreatment solutions to prevent this. Included in the pretreatment system is a hardness stabilizer cartridge which binds calcium, thereby protecting the RO membrane.


Chlorine can damage the RO membrane and reduce its performance and useful life. Again, both Pacific RO and LabTower RO have solutions to pretreat the water, which includes a 5 μm prefilter + activated carbon cartridge to prevent entry of particles > 5 μm and high concentrations of free chlorine.


The turbidity level indicates the amount of suspended solids present. This suspended material can shorten the life of filters and reverse osmosis membranes if not removed. Our Pure Water Experts can recommend pretreatment options if turbidity is an issue with your feed water. RO membranes show very little fouling when the feed water has a turbidity of less than 1 NTU.

SDI (Silt Density Index)

Suspended solids and colloidal materials in feed water are one of the biggest problems in reverse osmosis systems. In order to have some measure of the degree of this fouling problem, a concept called Silt Density Index is used. Here a 0.45 μm filter is exposed to the feed water under pressure and filtration rates are calculated. A SDI of <5 is considered acceptable for the reverse osmosis systems.

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