Solid-phase microextraction (SPME) is a sample preparation method developed to solve some of the analytical challenges of sample preparation as well as sample introduction and integration of different ...

Cleaning validation provides assurance that the quantity of residual substances collected from equipment surfaces are within permissible limits, helping to ensure quality control and safety in ...

This course is taught live in a virtual classroom through interactive, instructor-led training with instrument parts and consumables shown and explained. Small group sizes with plenty of opportunities ...

If no other sources are available to measure certain variables of a target population, Statistics Netherlands often uses a random sample, i.e. a sample of units from the population drawn in accordance ...

A recent Miner Institute Farm Report article dug into best practices around creating samples, and how to get results that are rooted in the reality of what your cows are eating.

PROC SURVEYSELECT provides a variety of methods for selecting probability-based random samples. With probability sampling, each unit in the survey population has a known, positive probablity of ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...