I am Dr. Beverly Barnum, a senior application scientist at Bettersize Instruments. I earned my Bachelor of Science degree in chemistry from California State University and later completed a Ph.D. in ...

All products featured on WIRED are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. Learn more. I don't ...

When using particle counters, many operators are unaware that during conventional manifold sampling, the monitor can undercount the ambient particle concentration. The manifold pump creates an ...