From Canaries to Tubes: How and Why Draeger Tubes are the Gold Standard in Gas Measurement
The year 1919 was a good one for canaries: That was when vials containing pumice laced with iodine pentoxide and sulfuric acid replaced the birds as sensors in coal mines. (Whew!). Back then, only carbon monoxide was detectable, but it wouldn’t be long before Draeger-Tubes came along, offering quantitative analysis—identifying a variety of gases—and became the gold standard in gas measurement. Why?