Ultrasonic Fractionation
of Cells in Microplates

Ultrasonic processors are now widely used in laboratories for a variety of applications. The use of 4-element probes increased productivity and improved repeatability over single probes. The recent addition of 8- and 24-element probes meets the high-throughput requirement of genomics and proteomics laboratories. Read how these time-saving multi-element probes will favorably impact your workload while ensuring uniform and predictable results.
Full Article

An Invaluable Tool for Water Analysis

This comprehensive resource covers the full range of Thermo Scientific pH electrode families including the best-selling ROSS Ultra®, ROSS®, and PerpHect® electrodes and the environmentally friendly “green” electrodes. All the information you need to operate, maintain, and troubleshoot your pH electrodes.
Download Free Handbook
(1MB pdf)

Take the challenge,
see if you’re right...

Chemical Grades—Not All the Same

Challenge: A customer calls in to inquire why their HPLC column is no longer lasting as long as it normally does, and informs the Application Specialist that the cost of replacing the column will throw off their budget if the issue continues. Their work load and test procedure have not changed, so they are wondering why there has been such a difference.

The customer uses the HPLC to test for the caffeine level in sodas they manufacture and there is no specific FDA test procedure they need to follow during testing. However, their results do have to be within a certain range, even though the exact caffeine level is not listed on the product label either. After some investigation, it was discovered that in trying to save money the customer had changed to a cheaper chemical. They had gone from using an ACS grade to a chemically pure grade; the customer assumed since it stated it was pure it would work similarly. What is the lowest chemical grade they could use in their application to save money and perform efficiently in their instrument?

1. Certified ACS—A chemical grade of highest purity; it meets or exceeds purity standards set by the American Chemical Society (ACS). Other grades at this level (dependent upon the manufacturer) include HPLC grade, ACS Plus, GC Resolv®, Spectranalyzed®, and Optima™.
2. Reagent/ACS grade—High purity generally equal to certified ACS grade and suitable for use in many laboratory and analytical applications. However, it has not established certification with ACS requirements.
3. USP—A chemical grade of sufficient purity to meet or exceed requirements of the U.S. Pharmacopeia (USP); acceptable for food, drug, or medicinal use; may be used for most laboratory purposes. This grade may also be listed as NF/FCC/EP/BP/JP certified dependent upon the manufacturer and popular markets for the chemical.
4. Lab grade—For use in routine laboratory applications as well as histological purposes

What You Should Know about Temperature Control and Hot Pates

In general, the better the temperature controller is in your hot plate, the smaller the temperature cycle and the temperature overshoot or undershoot values. Learn why all EchoTherm® digital hot plates and stirring hot plates feature PID temperature control.
Full Story