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January 20, 2014



Smaller is better - smaller columns and particle size offer higher throughput and require less solvents

Using columns with smaller particle size not only reduces costs but also improves the throughput. “Smaller particle size is where the industry is headed,” says Elizabeth Hodgdon, senior product manager in the Waters Division of Acquity UPLC Systems. Ultra performance liquid chromatography (UPLC) systems use columns with polymeric particles less than two microns in size that allow rapid analysis of samples at sub-micromolar flow rates. “We have always focused on chemistry, and UPLC is really a chemistry change,” says Hodgdon. Although the separation principle for UPLC is exactly the same as for HPLC, the differentiation is in the design of the system, which takes advantage of the smaller particle size. “We found that we could reduce the particle size and yet have a particle that was robust enough to withstand high pressures and could be suitably packed in a column. Then we realized that in order to truly reap the benefits of the increase in efficiency with using a smaller size particle, we needed to redesign the system.”

To read more about HPLC Columns and systems click here.

XPE Analytical Balances - Worry-free Weighing Thanks to Balance Intelligence

XPE Analytical Balances provide the best performance in analytical weighing and support the highest requirements for safety, efficiency and ease of compliance. Thanks to low repeatability, XPE Analytical Balances offer you the smallest minimum weight.

With a wide range of accessories available and multiple connectivity options, XPE Balances grow with your needs. You can enjoy a wealth of weighing possibilities for years to come.

Visit the Mettler Toledo Website to learn more about their Analytical Balances

 Polar Series Accel 500 LC Cooling/Heating Recirculating Chillers

Thermo Scientific™ Polar Series Accel 500 LC Cooling/Heating Recirculating Chillers offer 500 watts of cooling, with a working temperature range of −10° to +80°C. Dynamic, reliable and efficient—these powerful, compact chillers offer full-range cooling capabilities for quick ramp-up and cool-down of your application.

Offered with choice of a force or force/suction pump, and USB communication—a perfect fit for your laboratory.

Visit the Thermo Scientific Website to learn more about their Recirculating Chillers.

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?

D11 Drive error after power outage
I am getting a D11 Drive Error on an Avanti J30I centrifuge. There was a recent power outage before this error was observed. Does anyone know of a repair code to enter to clear this error? If relevant, is there a pre-code that must be entered? Help this member.

Imbalance error in Hitachi CP100WX centrifuge
I am getting repeated imbalance error in Hitachi CP100WX centrifuge.  Could you please let me know how to clear these errors? Respond to this member.

ABX Micros 60 printing error
I have a hardware problem in the priner and I need to change the printer. What are the compatible printers to the device?  Advise this member.

View all Questions and Discussions on LabWrench

Time Dependant Spectroscopy of Microscopic Samples
CRAIC Technologies, a leading innovator of UV-visible-NIR microanalysis solutions, is proud to introduce CRAIC TimePro™ kinetic spectroscopy software.  This software package is designed to be used with CRAIC Technology’s microspectrophotometers and their controlling Lambdafire™ software.  CRAIC TimePro™ allows the user to monitor changes in the spectra over time. Read more.

Eppendorf’s new epMotion® systems reliably undertake even more liquid handling tasks
Eppendorf has launched five new models to its epMotion range of automated pipetting systems. Designed for effective, automated liquid handling applications, epMotion 5075 systems provide a precise, accurate alternative to time-consuming manual pipetting and liquid handling tasks. Read more.

Tosoh Bioscience Announces NEW TSKgel® High Temperature Gel Permeation Chromatography Columns
Tosoh Bioscience LLC is proud to announce the introduction of our newest gel permeation chromatography/size exclusion chromatography (GPC/SEC) columns, the TSKgel High Temperature (HT) and Ultra-High Temperature (HT2) GPC Columns. The release of these columns is accompanied by the new EcoSEC® High Temperature GPC System for polymer analysis up to 220°C. Read more.

Thank you Supelco/Sigma-Aldrich for sponsoring the HPLC Columns Category on LabWrench.

Supelco, a Sigma-Aldrich Corporation subsidiary, is an ISO 9001-registered company that manufactures and distributes an extensive selection of U/HPLC and chiral columns for small-molecule and biopolymer separations; GC columns; SPE products and SPME materials for sample preparation; chemical standards and customized products and services (such as resin, media processing and small unit packaging).  Supelco's main production facility is in Bellefonte, Pennsylvania. An extensive network of Sigma-Aldrich subsidiaries and sales professionals promotes and supports Supelco products worldwide.

Visit the Supelco/Sigma-Aldrich website to use their Interactive Catalog.

Informatics Solutions
for Your Lab

Thurs Jan 30, 2014
12:00 - 1:30 PM EST

 Register Now!

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?

Hexane mobile phase on PhenomenexEnviroSep ABC
We have EnviroSep ABC column in our lab on which methylene chloride was used as a mobile phase. We are starting a new project and using hexane as an extraction solvent. My question is whether hexane is a compatible solvent with the column's stationary phase (I did some quick search online and couldn't find any reference to that on my own), and if it is, whether it is okay to do it on the same column that methylene chloride has been used before?  Advise this member.

Bio-Rad Poly-Prep column question
Can this column used for purification of protein within tobacco leaves?  Share your experience and learn more.

CHIRALIZER SERVICES, L.L.C. LC Spiderling Column Selector
After a power cut, my 6 position Spiderling has now 10 positions how do I reset the oven the 6 port configuration?  Help this member.

View all Questions and Discussions on LabWrench

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