We often are asked many questions regarding Labconco CentriVap® Concentrators. Here are the answers to some of the most common questions.
If your question is not answered, do not hesitate to contact us as we are happy to help. Expert advice is only a phone call, email or chat away.
1. Why are concentrators used for evaporating biological samples?
The most common way to evaporate something is to apply heat and boil off the liquid. Biological samples are heat sensitive thus the heat that drives the evaporation process must be limited. In a vacuum atmosphere pressure levels are lowered and liquids boil or evaporate at lower temperatures.
A vacuum atmosphere in the concentrator lowers the pressure level so that evaporation will occur at low temperatures and the samples will not be damaged from heat.
2. How are concentrators different than centrifuges?
Both concentrators and centrifuges spin samples that are commonly in tubes or microplates. Centrifuges spin samples at variable rates creating G forces that separate samples according to density. Concentrators spin samples at a fixed, low-speed that creates just enough force to keep the liquid samples in tubes or microplates so a vacuum can be applied to liquids without losing any samples. Concentrators require a vacuum pump and centrifuges do not operate under vacuum.
3. Does every Labconco CentriVap® Concentrator need a vacuum pump?
A vacuum pump is required to centrifugally concentrate, however the CentriVap Micro IR, CentriVap DNA and CentriVap Complete models include a built-in chemical-resistant diaphragm vacuum pump and a rotor. All other CentriVaps require the purchase of a chemical- resistant diaphragm vacuum pump.
4. When do you use a cold trap with a concentrator?
Most samples do not require a Cold Trap in order to evaporate.
5. Is there an easy way to determine which Labconco CentriVap® Concentrator is best for my applications?
Labconco offers an extensive selection of centrifugal concentrators with each model designed for specific applications. To ensure you are getting the best CentriVap for your needs, simply use the Scout™ Lab Equipment Selector on the Labconco website.