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Oregon State University intends to contract for the provision of a rheometer HR20 from TA Instruments as a sole source because of the uniqueness (design, capability, nature) of the goods and the contractor being the single provider of the goods. Rheometer must incorporate a magnetic levitation thrust bearing, as compared to traditional air or mechanical bearings. Additionally, the rheometer must have an angular velocity range of 0-300 rad/s, a frequency range of 7.5e-7 to 628 rad/s, and a normal force range of 0.005 to 50 N. The rheometer should be compatible with a variety of accessories, including a solvent trap and photo-curing accessory. The rheometer must offer a Peltier Plate with a temperature range of 0-100 °C with temperature accuracy of 0.1 °C. Solvent trap must be in contact with Peltier heating surface to efficiently prevent evaporation of solvents without condensation and should not require a separate heating system. An entity may appeal this determination in accordance with OSU Standard 03-010. Section 5.17 no later than the closing date indicated on the website. Appeals must be submitted to Procurement, Contracts and Materials Management at procurement@oregonstate.edu by 06/25/25 at 3:00PM PST. For additional information please contact Hannah Punches by email at Hannah.Punches@oregonstate.edu