Science

Vintage 1975 tungsten wire spool from Obtainium Science and Surplus

Tungsten Wire: The Science, History, and Modern Applications of Wolfram

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👉Buy it from Obtainium Science and Surplus Tungsten wire, often called Wolfram wire, is one of science and industry’s most versatile and durable materials. Its unmatched heat resistance, strength, and precision have been a cornerstone of innovation for decades. Whether repairing crosshairs in a microscope, powering an electron microscope, or crafting high-temperature experiments, tungsten wire delivers … Read more

Hach Water Test Kit for Nitrites and Nitrates from Obtainium Science and Surplus, displayed open on a textured metal surface. The blue plastic case contains glass test tubes, black caps, a dropper, and compartments for reagents. Instruction sheets and reagent packets are visible.

Why the Hach Water Test Kit NI-12 for Nitrites and Nitrates Is Vital for Water Quality Analysis

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Nitrites and nitrates—common contaminants in water—can pose serious risks to health and the environment. Water is essential to life, but how often do we stop to think about what’s in it? Testing your water is the first step to ensuring its safety. Enter the Hach Water Test Kit NI-12 for Nitrites and Nitrates, a reliable, portable, and … Read more