When Archibald Henderson created the sampling ID, what was the type of sample taken?

When Archibald Henderson developed the sampling identification method, the focus was on solid biological samples. This method is particularly significant because solid biological samples can provide critical information related to the presence of biological agents, which is essential in CBRN reconnaissance operations.

Solid biological samples allow for the analysis of microorganisms, spores, or other biological material that may indicate contamination or biological threats. This type of sampling is crucial in environments where biological agents are suspected or confirmed, as it helps in assessing the level of threat and formulating an appropriate response.

In CBRN operations, solid samples are favored for their stability and ease of transport to laboratories for more detailed analysis. This characteristic makes them valuable tools in the assessment and monitoring of biological hazards.