At the turn of the twentieth century, so-called “glass diseases” seriously affected the use of scientific and technical glassware. It had become apparent by 1900 that glass, a supposedly neutral and inert material, not only interacted with its environment but also interfered with anything it contained—chemically, physically, and biologically. Starting from the assumption that modern laboratory research depends on containers that regulate the spatial, material, and epistemic enclosure of its experimental milieus and objects, this essay argues that the standardization of (...) glass quality from the 1900s to the 1930s must be understood as a reconfiguration of a “marginal” but nonetheless constitutive element of modern laboratory environments. The aim here is thus to weave various threads together into an (un)natural history of a modern material, one that considers epistemology, technology, and ontology—or, more specifically, the changing requirements and functions of glassware in the modern laboratory, the invention of specifically adapted glass substances, and the parallel advancement of glass science and its theories of what glass actually is. (shrink)

ArgumentGlass vessels such as flasks and test tubes play an ambiguous role in the historiography of modern laboratory research. In spite of the strong focus on the role of materiality in the last decades, the scientific glass vessel – while being symbolically omnipresent – has remained curiously neglected in regard to its materiality. The popular image ortoposof the transparent, neutral, and quasi-immaterial glass container obstructs the view of the physico-chemical functionality of this constitutive inner boundary in modern laboratory environments and (...) its material historicity. In order to understand how glass vessels were able to provide a stable epistemic containment of spatially enclosed experimental phenomena in the new laboratory ecologies emerging in the nineteenth and early twentieth century, I will focus on the history of thematerialstandardization of laboratory glassware. I will follow the rise of a new awareness for measurement errors due to the chemical agency of experimental glass vessels, then I will sketch the emergence of a whole techno-scientific infrastructure for the improvement of glass container quality in late nineteenth-century Germany. In the last part of my argument, I will return to the laboratory by looking at the implementation of this glass reform that created a newoikosfor the inner experimental milieus of modern laboratory research. (shrink)