Abstract: To provide a zeta-potential measurement jig which does not require dedicated tools and enables placement of a sample in a cell with simple work. Provided is a zeta-potential measurement jig, to be used for an electrophoretic mobility measuring device, including: a frame body including: a first holding wall and a second holding wall; and a bottom wall; an intermediate block, and a cell retainer, wherein at least one of the first holding wall or the second holding wall has one of a first groove or a first protrusion to be elastically fitted into the first groove, which is configured to support the intermediate block on a lateral side, and wherein the intermediate block has another one of the first groove or the first protrusion.

Abstract: Provided is a zeta-potential measurement jig set capable of changing a sample or performing a plating process with a simple operation. The zeta-potential measurement jig set includes a frame and a measurement jig. The frame includes a first and second holding wall, a bottom wall that connects lower ends of the first and second holding wall and includes an anode plate and a cathode plate, and a first lock portion. The measurement jig includes a lower block and disposed on the bottom wall, a cell having a recess in which a sample is disposed and a cell communication hole, a middle block having a frame-like shape surrounding the recess in a plan view, an upper member covering an upper surface of the recess, and a second lock portion pressing the upper member toward the bottom wall. The first lock portion presses the middle block toward the bottom wall.

Abstract: A terminal control program according to the present disclosure causes a terminal apparatus to perform: receiving function setting information that has been automatically transmitted from a fishing electric reel in response to a first request transmitted in response to a user's operation; storing the received function setting information; displaying a first setting screen that the user uses to set each function of the fishing electric reel; and transmitting, to the fishing electric reel, information indicating setting of each of the functions that has been set by the user, and causing the information to be stored as the function setting information, and in the displaying of the first setting screen, an operation object is displayed on the first setting screen in a state where each of the functions has been set on the basis of the stored function setting information, the operation object being used to set each of the functions.

Abstract: A terminal control program according to the present disclosure causes a terminal apparatus to perform: receiving model information and version information that have been automatically transmitted from a fishing electric reel in response to a first request transmitted according to a user's operation; storing a reel control program of a latest version of the fishing electric reel of a model indicated by the model information; transmitting the reel control program of the latest version to the fishing electric reel, in a case where a version indicated by the received version information does not match the latest version; and changing a screen for setting or displaying reel information to the screen that corresponds to the reel control program of the latest version.

Abstract: Provided are a light scattering measuring apparatus. The light scattering measuring apparatus includes: light sources; a single light receiver; a sample holder including a cell, a frame body, a first opening formed in an incident portion of a first optical path used for forward measurement or side measurement, and a second opening formed in an incident portion of a second optical path used for back measurement, and an optical element; and a moving mechanism. The first optical path and the second optical path are separated from each other in vertical direction. The moving mechanism moves the first opening to a position of the incident portion of the first optical path when the forward or side measurement is to be performed, and to move the second opening to a position of the incident portion of the second optical path when the back measurement is to be performed.

Abstract: To provide a zeta-potential measurement jig which does not require dedicated tools and enables placement of a sample in a cell with simple work. Provided is a zeta-potential measurement jig, to be used for an electrophoretic mobility measuring device, including: a frame body including: a first holding wall and a second holding wall; and a bottom wall; an intermediate block, and a cell retainer, wherein at least one of the first holding wall or the second holding wall has one of a first groove or a first protrusion to be elastically fitted into the first groove, which is configured to support the intermediate block on a lateral side, and wherein the intermediate block has another one of the first groove or the first protrusion.