Abstract: The present invention is a system and method for automated testing, treatment, and maintenance of fluid such as water disposed in swimming pools, spas, and other bodies of water, wherein the water testing system access a fluid to be monitored by using an in-line T-segment attachment that is inserted into a pipe and that enables a water testing system to be easily attached to the in-line T-segment attachment.

Abstract: An example barrier can be switchable between an at least partially collapsed state and at least partially expanded state (e.g., a deployed state). For example, the barrier can be formed from a continuous sheet and a plurality of rigid sections (e.g., rigid panels) attached or incorporated into the continuous sheet. The barrier can also include a plurality of hinges, such as hinge lines, between the panels that are formed from the continuous sheet. The hinges enable the barrier to be rigid foldable (e.g., the hinges can fold and unfold while the rigid sections remain stiff and rigid) between the expanded and collapsed states.

Abstract: The present invention is a system and method for automated testing, treatment, and maintenance of fluid such as water disposed in swimming pools, spas, and other bodies of water, wherein the water testing system includes precise control over the amount of reagent used in testing, and the frequency of testing of any measurable aspect of the test water, wherein the system is optimized for minimal power consumption and reduced complexity of a system for optimized testing and flushing of test water mixed with reagents from a testing reservoir using a fluid flow path system, and the use of fewer moving parts in the fluid flow path to reduce failure and increase the usable life of the water testing system.

Abstract: The present invention is a system and method for automated testing, treatment, and maintenance of fluid such as water disposed in swimming pools, spas, and other bodies of water, wherein the water testing system includes precise control over the amount of reagent used in testing, and the frequency of testing of any measurable aspect of the test water, wherein the system is optimized for minimal power consumption and reduced complexity of a system for optimized testing and flushing of test water mixed with reagents from a testing reservoir using a fluid flow path system, and the use of fewer moving parts in the fluid flow path to reduce failure and increase the usable life of the water testing system.

Abstract: An example barrier can be switchable between an at least partially collapsed state and at least partially expanded state (e.g., a deployed state). For example, the barrier can be formed from a sheet and a plurality of rigid sections (e.g., rigid panels) attached or incorporated into the sheet. The barrier can also include a plurality of hinges, such as hinge lines, between the panels that are formed from the sheet. The hinges enable the barrier to be rigid foldable (e.g., the hinges can fold and unfold while the rigid sections remain stiff and rigid) between the expanded and collapsed states.

Abstract: An example barrier can be switchable between an at least partially collapsed state and at least partially expanded state (e.g., a deployed state). For example, the barrier can be formed from a continuous sheet and a plurality of rigid sections (e.g., rigid panels) attached or incorporated into the continuous sheet. The barrier can also include a plurality of hinges, such as hinge lines, between the panels that are formed from the continuous sheet. The hinges enable the barrier to be rigid foldable (e.g., the hinges can fold and unfold while the rigid sections remain stiff and rigid) between the expanded and collapsed states.

Abstract: An example barrier can be switchable between an at least partially collapsed state and at least partially expanded state (e.g., a deployed state). For example, the barrier can be formed from a continuous sheet and a plurality of rigid sections (e.g., rigid panels) attached or incorporated into the continuous sheet. The barrier can also include a plurality of hinges, such as hinge lines, between the panels that are formed from the continuous sheet. The hinges enable the barrier to be rigid foldable (e.g., the hinges can fold and unfold while the rigid sections remain stiff and rigid) between the expanded and collapsed states.

Abstract: An example barrier can be switchable between an at least partially collapsed state and at least partially expanded state (e.g., a deployed state). For example, the barrier can be formed from a sheet and a plurality of rigid sections (e.g., rigid panels) attached or incorporated into the sheet. The barrier can also include a plurality of hinges, such as hinge lines, between the panels that are formed from the sheet. The hinges enable the barrier to be rigid foldable (e.g., the hinges can fold and unfold while the rigid sections remain stiff and rigid) between the expanded and collapsed states.

Abstract: An example barrier can be switchable between an at least partially collapsed state and at least partially expanded state (e.g., a deployed state). For example, the barrier can be formed from a continuous sheet and a plurality of rigid sections (e.g., rigid panels) attached or incorporated into the continuous sheet. The barrier can also include a plurality of hinges, such as hinge lines, between the panels that are formed from the continuous sheet. The hinges enable the barrier to be rigid foldable (e.g., the hinges can fold and unfold while the rigid sections remain stiff and rigid) between the expanded and collapsed states.