UltraPure™ Tris Hydrochloride UltraPure™ Tris Hydrochloride [tris(hydroxymethyl)aminomethane hydrochloride] is used to simplify preparation of Tris buffers. Chemical Name: Tris Form: Powder Product Size: 500 g Shipping Condition: Approved for shipment at Room Temperature or on Wet Ice Regulatory Statement: For Research Use Only. Not for use in diagnostic procedures. Store at room temperature.