Abstract: A blood purification apparatus configured such that the connection of a chamber member is prevented from being forgotten when blood purification treatment is performed after the switching to a single-needle state. A blood purification apparatus is arbitrarily switchable between a double-needle state and a single-needle state and includes a blood pump 4, a delivery-amount-detecting unit 11 configured to detect the amount of liquid delivery made with the operation of the blood pump 4, a pressure detector 6 configured to detect the pressure in a blood circuit, a chamber member 9 connected to an air-trap chamber 5 in the single-needle state and configured to receive and store the blood in the blood circuit in a blood-collection phase in which blood is collected from the patient and to discharge the stored blood into the blood circuit in a blood-return phase in which the blood is returned to the patient.

Abstract: A method of stably producing glycidyl 2-hydroxyisobutyrate at high purity and high yield is provided. A reactive diluent is provided for an epoxy resin including the above-mentioned glycidyl 2-hydroxyisobutyrate, and an epoxy resin composition.

Abstract: A method of stably producing glycidyl 2-hydroxyisobutyrate at high purity and high yield is provided. A reactive diluent is provided for an epoxy resin including the above-mentioned glycidyl 2-hydroxyisobutyrate, and an epoxy resin composition.