Technical Articles

Centrifuges are common and important tools for the laboratory. Choosing the right rotor system for each centrifuge can maximize the equipment’s performance and longevity. read more

Over the last decade, monolith technology has progressed from a promising approach conceived by Fréchet, Švec, Huber, and others to a well-developed separation tool. read more

Magnetic particle-based techniques are widely used in many diverse biological applications, offering a relatively inexpensive technology and subjecting samples to very little mechanical stress. read more

In an environment literally covered in microorganisms, keeping cell cultures contaminant free is both challenging and essential. read more

Check valves are a vital mechanical component of HPLC pump hardware. A detailed description of check valve function and hardware designs is given in Ref. 1. read more

In recent years, Gemini surfactants have emerged as promising surface active agents. read more

In the previous article (Part 27, American Laboratory, Sept 2007), the world of detection was shown to revolve around three variables: 1) the detection limit, 2) the probability of false positives, a,... read more

In Part 29 (American Laboratory, Feb 2008), Hubaux-Vos detection limits (H-V DLs) were explained and an illustration was given. read more

Please do not despair! This article is not a series of formulas to be memorized. read more

In the last installment (Part 32, American Laboratory, Nov/Dec 2008) of this series, three detection limits (DLs) were calculated (via the 3-Sigma [3s] approach, where a is set to be 0.01) for a ... read more