Technical Articles

Measurement is at the heart of what analytical chemists do on a routine basis. read more

As was discussed in the previous column of this series (in the January 2003 issue of American Laboratory), calibration is a procedure that imperfectly transforms a response into a useful measurement. read more

In the last installment in this series, it was suggested that a rule-of-thumb for calibration designs was five-by-five (i.e., five replicates of each of five concentrations), for a total of 25 data ... read more

The past seven articles have provided the fundamentals of calibration, including a protocol for designing a calibration study. read more

This month's article will conclude the three-part series explaining calibration diagnostics. read more

This month’s installment is the second in a series of real-world examples of calibration diagnostics. read more

This fourth real-world example of calibration diagnostics comes from the same study as did Part 13 (American Laboratory, Sept 2004). read more

Molds can cause health problems such as infections and allergies, destroy crops, and contaminate food or pharmaceuticals. read more

Laboratories are increasingly collecting biological samples, or biosamples, in formal repositories for use in research, driven in part by the availability of new analytic methods in genomics and ... read more

Now that the Human Genome Project is finished, the next important phase is understanding the expression and function of proteins. read more