The National Institute of Standards and Technology awarded a purchase order to Merelex Corporation (American Elements division) for $64,522.71 on September 22, 2026, under a total small business set-aside. The order procures isotropic polycrystal platinum cylinders in three diameter-height configurations (3 mm × 3.42 mm, 1.0 mm × 1.0 mm, and 0.3 mm × 0.3 mm), with a minimum quantity of 100 cylinders per size from a single production lot. Cylinders must meet 99.99% purity with polycrystalline isotropic structure, small grain size, minimal dimensional uncertainty, and polished surfaces; certification documentation must include composition, lot identification, processing history, grain size, dimensional inspection results, isotropy testing, and where reasonably available, X-ray diffraction or SEM/TEM imagery. Performance is based in Santa Monica, California, with delivery to NIST Gaithersburg, Maryland. The order completes by March 19, 2027.