LabWrench News: Questions You Should Ask When Buying An Evaporator or Evaporation System | Labwrench eNews | LabWrench

May 12, 2014

Product Resources

Top 5 Questions You Should Ask When Buying An Evaporator or Evaporation System

  1. What are your sample sizes? Microtiter plates and micro centrifuge tubes work best in a centrifugal vacuum concentrator. For large samples up to 450mls, a vortex evaporator is recommended.
  2. What are your samples? Acids require an acid-resistant system. Solvents damage plastic and rubber components, an appropriate system to prevent damage is recommended. A -50C cold trap is ideal for aqueous-based samples, a -85C cold trap traps most solvents and a -105C cold trap is recommended for alcohols.
  3. Are your samples heat sensitive? Even at ambient set point, vacuum concentrators add heat through friction. A concentrator that has refrigeration built into it will give you the temperature control recommended to maintain the viability of heat liable samples.
  4. Do you have limited space? A floor model with casters or small all-in-one benchtop model can be moved out of the way when not in use.
  5. Do you prefer vacuum evaporation or nitrogen blow-down? Some samples require evaporation under nitrogen, which is gentler, for volatile solvents.

Click here to read more about Evaporators and Evaporation Systems.

Product of Interest

Green Karl Fischer Alternative, Moisture Specific Relative Humidity Sensor Technology - Computrac® Vapor Pro® 

The Computrac® Vapor Pro® provides a GREEN, fast, easy, and cost-effective alternative to Karl Fischer titration methods. It is an ideal choice for companies who want to make quality products as efficiently as possible by saving time and money, improving dryer efficiencies and eliminating costly rework and downtime expenses.

  • Statistical Features Calculate Mean, Standard Deviation and Coefficient of Variation (C.V.)
  • Easy Setup of Product Methods to Ensure Optimum Test Results
  • Flexible Ending Criteria to Ensure Accurate Test Results
  • Programmable Temperatures to ±1°C

Visit the Arizona Instrument Website to see all of their Moisture Analysis Products


Patriot™ Ductless Fume Hoods

Patriot™ ductless polypropylene fume hoods provide the operator with exceptional user friendly features while allowing total control and visibility of fume hood performance with the AirSafe NXT touch screen automatic safety controller.

AirSafe NXT™ is unique to Patriot ductless fume hoods. A new feature, only available on Patriot™, is the ChemMinder™ chemical application acknowledgement system that provides the end user with real time data on approved chemical class. Also, Patriot™ provides real time visual indication of filter life on AirSafe™ NXT color touch screen controller.

Patriot ductless hoods incorporate much of the advanced technology of AirClean's Independence fume hood with the cost effective backbone of AirClean's AC4000 folding and sliding-sash ductless fume hoods.  


Visit the AirClean Systems website to see all of their Ductless Fume Hoods.

Help your Colleagues

Plenty of discussions are happening on LabWrench all the time. We have many questions come in daily from users that are seeking advice from fellow users and lab professionals on LabWrench. Can you help any of these users find the answers they are looking for?

Biotage TurboVap II sensor Cleaning
TurboVap sensors just doubled cost.  Has anyone ever successfully cleaned/regenerated them? Respond to this member.

Labconco Rotary Evaporator - Direction needed
We have a Buchler/Labconco Rotary Evaporator and need directions to replace parts.  We bought the Evaporator about 1980.  Recently we began to lose vacuum, and evaporation slowed.  We have spare parts, but no instructions.  Would the instructions be available online? Share your knowledge.

Motor will not turn on Savant Concentrator SVC100H model AES 1000
The rotor motor on the AES 1000 will not spin. Lid switch is OK. No voltage going to motor. Anybody have a diagram of the main board SVCC 200? P/N of board is 090D6057-00-A, 120vac. Thanks in advance. Help this member.

Click here to view all Questions and Discussions on LabWrench.

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Company News Hot Off The Press

Kaluza for Gallios Delivers Ease of Use, Analytical Power for Researchers
Beckman Coulter Life Sciences Offers New Software Package For Data Acquisition in Cytometry, For Use Across Cell Analysis Applications Kaluza for Gallios software combines cutting edge data acquisition tools with remarkable ease of use to increase efficiency and performance in the cell characterization and analysis workflow of core research laboratories. Read more.
Tri-Fitt Stainless Steel Fittings for UHPLC and HPLC
JM Science is pleased to announce the new Tri-Fitt fittings for very high pressure UHPLC and HPLC applications that require no leaks at pressures at or above 20,000psi. Read more.
VeriAir Flex® Manual-Inflating Sample Bags
Nextteq's VeriAir Flex manual-inflating sample bag offers a patented design that allows an atmospheric grab sample to be collected directly without any need for sampling pumps or other equipment. Read more.

 Click here to view all news articles on LabWrench.

Sponsor of the Week

Thank you Heidolph North America for sponsoring the Evaporators/Concentrators category on LabWrench.

As an innovative and globally active company, we focus on providing premium laboratory equipment to top scientific minds in the pharmaceutical research, cosmetics, biology, bio-fuel and chemical industries. These products include being the category leader in Rotary Evaporators and Overhead Stirrers along with Hotplates, BenchTop Shakers, Homogenizers, and Peristaltic Pumps. We also provide Sterilizers, Synthesis Solutions and Fume Hoods.

Our team based out of the Chicago area is dedicated to providing top customer service and technical support to the US and Canadian laboratory equipment market. We have 11 outside sales specialists providing the customer with application support, demonstrations, set up and training and on-site service checks.

Visit the Heidolph North America website to view their full line of products.

Upcoming Free Webinar


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Thurs. May 22, 2014
12:00 - 1:30 PM EDT

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Questions from the Vault

We have so many questions filling our forums that sometimes questions can be missed and go without answers. Can you help us provide answers for these users with unanswered questions?

Identification and concentration determination of unknown solvents using a basic Roto evaporator
I have inherited a used IKA BASIC roto-evaporator which unfortunately has no Vacuum Controller and our budget is too strapped to purchase one. I was wondering since most solvents have characteristic boiling points and I took the pressure in the vessel down far enough is it possible to generate a solvent B.P. chart for various solvents at select low pressures without actually knowing what pressure (vacuum) the unknown solvents will boil? Click to respond.

BUCHI Corporation Rotavapor® R-220 will not go up or down
The control to raise and lower the rotovap is broken. How can I fix this? Share your knowledge.

Zymark TurboVap LV 110volt plugged into 220 Volt
I have a customer who purchased a 110 volt unit and connected it to 220 volt.  It blew the fuse. I want to repair it. Do you have a description of the differences between the 110volt and 220volt unit. It looks like transform has burnt. Help this member

Click here to view all Questions and Discussions on LabWrench.




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Links to CATEGORY PAGES on LabWrench

Atomic Absorption
 Clinical Chemistry Analyzers
Evaporators Concentrators
 Fume Hoods
 GC Systems
 Hematology Analyzers
 HPLC Systems
Microplate Readers
PCR Thermal Cyclers
UV / VIS Spectrophotometers


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