A third solution is prepared by mixing the first solution and the second solution together.

The solution may be a contrast solution, for viewing of the vessel, a therapeutic or diagnostic solution, or any other type of solution.

The solution-applying operations include a first solution-applying operation and a second solution-applying operation.

The functional solution supply system produces the functional solution by electrolyzing a sulfuric solution, and supplies the functional solution to the using side.

The first solution and the second solution are mixed to form a precursor solution.

The two solutions may include a first solution, such as a silicate solution, and a second solution that may be an aqueous hardener solution.

There are two pipes for concentrated solution and two pipes for diluted solution in the housing for solution pipes (23).

The urea solution tank (23) stores the urea solution.

Said extracting solution is the mixture of organic solvent and alkaline solution.

Nutrient solution flows into the water culture groove through the solution supply pipe and flows back to the nutrient solution box through the solution return pipe.

The solution applicator of the present invention prevents a loss of the solution in the container.

The working solution regenerated in the regeneration stage is returned to the cyclic process.

In some embodiments, the dosing assembly is configured to transfer injectate from an injectate source to the injectate assembly.

In a raw material solution preparation process (11), a raw material solution such as an InP/ZnS dispersed solution is prepared.

A blue colour is produced when adding (to 5 ml solution) one drop of iodine test solution (TS) and a few drops of boric acid solution