A method for evaluating the cytotoxicity of a gas, the method being applicable to cells present in a cell culture medium, namely, to cells other than bronchial- or lung-derived cells. The method including: a gas dissolution step for dissolving a gas in a cell culture medium, and a cell evaluation step for measuring a cell function, in this order.

In a device that measures biopotentials of cells in a solution, the solution is controlled at a constant temperature. A measurement device includes a substrate, a sensing control circuit, a temperature sensor, a front surface side heat radiating unit, a back surface side heat radiating unit, and a temperature control unit. A plurality of electrodes each detecting a potential in the solution is arranged on the front surface of the substrate. The sensing control circuit is arranged on the substrate and controls detection of potentials at the plurality of electrodes. The temperature sensor is arranged on the substrate and detects a temperature of the solution. The front surface side heat radiating unit is arranged on the front surface side of the substrate and radiates heat. The back surface side heat radiating unit is arranged on the back surface side that is a surface different from the front surface of the substrate, and radiates heat. The temperature control unit controls the temperature of the solution on the basis of the temperature detected by the temperature sensor.

A method for evaluating the cytotoxicity of a gas, the method being applicable to cells present in a cell culture medium, namely, to cells other than bronchial- or lung-derived cells. The method including: a gas dissolution step for dissolving a gas in a cell culture medium, and a cell evaluation step for measuring a cell function, in this order.