A floor cleaning machine is provided. The floor cleaning machine includes a solution tank for a cleaning solution. A pre-canister sensor receives the cleaning solution and measures the concentration of any dissolved solids. A canister assembly receives a portion of the cleaning solution from the pre-canister sensor and dissolves portions of a solid chemical form into the cleaning solution thereby forming blended droplets. The canister assembly has a spray nozzle positioned vertically above the solid chemical form. A post-canister sensor receives a mixture of the cleaning solution from the pre-canister sensor and the blended droplets from the canister assembly. The post-canister sensor measures the concentration of any dissolved solids within the mixture of the cleaning solution from the pre-canister sensor and the blended droplets from the canister assembly. A comparison of the baseline and post-canister measurements outside of a desired range results in replacement of the solid chemical form.

A non-dissolvable immersible dispensing puck in the shape of a dissolvable halogen puck when the dissolvable halogen puck is in an undissolved state with the non-dissolvable immersible dispensing puck physically interchangeable with a dissolvable halogen puck when placed in a dispenser for normally holding only a set of halogen pucks to enable a single dispersant dispenser to be converted to a dual dispersant dispenser without changing the structure of the single dispersant dispenser by placing a dispenser within a dispenser wherein only one of the dispensers may be provided with adjustable water ports.

A floating dispenser having an external float or an internal float for supporting a cartridge or cartridges for floatingly delivering a dispersant or dispersants to a body of water with the floating dispenser having cartridges rotationally positionable with respect to one another to control the rate of dispensing while the dispenser floats in an upright condition with the floating dispenser changing its flotation orientation in response to consumption of the dispersant or dispersants in the a cartridge to thereby provide a visual alert to replace a spent cartridge with a fresh cartridge. In addition, the inventions described herein permit changing the dispensing nature of the system from a multiple dispensing system to a single dispensing system without changing the floating characteristics of the floating dispensers through replacement of a dispersant in one of the cartridges with an inert or ballast material that has no effect on the water characteristics.

A non-dissolvable immersible dispensing puck in the shape of a dissolvable halogen puck when the dissolvable halogen puck is in an undissolved state with the non-dissolvable immersible dispensing puck physically interchangeable with a dissolvable halogen puck when placed in a dispenser for normally holding only a set of halogen pucks to enable a single dispersant dispenser to be converted to a dual dispersant dispenser without changing the structure of the single dispersant dispenser by placing a dispenser within a dispenser wherein only one of the dispensers may be provided with adjustable water ports.

A floating dispenser having an external float or an internal float for supporting a cartridge or cartridges for floatingly delivering a dispersant or dispersants to a body of water with the floating dispenser having cartridges rotationally positionable with respect to one another to control the rate of dispensing while the dispenser floats in an upright condition with the floating dispenser changing its flotation orientation in response to consumption of the dispersant or dispersants in the a cartridge to thereby provide a visual alert to replace a spent cartridge with a fresh cartridge. In addition, the inventions described herein permit changing the dispensing nature of the system from a multiple dispensing system to a single dispensing system without changing the floating characteristics of the floating dispensers through replacement of a dispersant in one of the cartridges with an inert or ballast material that has no effect on the water characteristics.

An aqueous solvent composition (or separation fluid composition) including an aqueous mixture of (a) a solvent and (b) water for swelling, degrading, and/or fully dissolving adhesives; wherein the molecular weight of the solvent in the aqueous mixture is less than 1,000 g/mol; wherein the Hansen Solubility parameters of the solvent are in the following ranges: (i) a dispersive component from 15 MPa.sup.1/2 to 21 MPa.sup.1/2; (ii) a polar component from 3 MPa.sup.1/2 to 10.5 MPa.sup.1/2; and (iii) a hydrogen bonding component from 2 MPa.sup.1/2 to 18 MPa.sup.1/2; wherein the solvent contains at least one aromatic group; wherein the solvent contains at least one hetero-atom; and wherein the adhesive at least swells to more than 50% by weight when soaked in the aqueous mixture; a process for treating an adhesive to swell, degrade, and/or fully dissolve the adhesive using the above aqueous mixture; a process for delaminating a multilayer packaging, a multilayer film or a multilayer article containing an adhesive using the above aqueous mixture; a process for recycling a multilayer packaging, a multilayer film or a multilayer article containing an adhesive using the above aqueous mixture; and a recycled packaging, film or article prepared by the above recycling process.

The disclosure provides methods of in vitro dissolution of a solute, comprising agitating a solution placed in a vessel using a mobile paddle: wherein the solution comprises a solute, a media, and a plurality of beads; and wherein the paddle is submerged in the solution. In some aspects, the plurality of beads is positioned between the solute and the mobile paddle. In some aspects, the solute is sandwiched by the plurality of beads, wherein the solute is positioned both on top of and below the plurality of beads.

A chemical feeder includes a housing having a housing chamber, a sieve plate within the housing chamber, and a cartridge on an upper surface of the sieve plate. The cartridge includes a tubular member with a sidewall outer surface and a plurality of partitions extending from the sidewall outer surface to define a plurality of pockets, at least one of which contains a solid chemical material. The sieve plate includes a plurality of sieve plate inlet apertures, at least a portion of which are in fluid communication with at least one of the plurality of pockets. During operation, a feed liquid passes up through at least a portion of the sieve inlet plate apertures and into at least one pocket where it contacts a solid chemical material, so as to form a treated liquid that includes dissolved chemical material, at least a portion of which is removed through an outlet.

A floating dispenser having an external float or an internal float for supporting a cartridge or cartridges for floatingly delivering a dispersant or dispersants to a body of water with the floating dispenser having cartridges rotationally positionable with respect to one another to control the rate of dispensing while the dispenser floats in an upright condition with the floating dispenser changing its flotation orientation in response to consumption of the dispersant or dispersants in the a cartridge to thereby provide a visual alert to replace a spent cartridge with a fresh cartridge. In addition the inventions described herein permit changing the dispensing nature of the system from a multiple dispensing system to a single dispensing system without changing the floating characteristics of the floating dispensers through replacement of a dispersant in one of the cartridges with an inert or ballast material that has no effect on the water characteristics.

In some embodiments, a water straining and chemical additive device may include a filter body having a wall inflow surface, a central aperture, and a peripheral aperture. A return water tube having a tube outflow surface and a tube inflow surface may be coupled to the filter body. An inflow conduit may be in fluid communication with the peripheral aperture, and the inflow conduit may be formed by the wall inflow surface and the tube inflow surface. An inflow filter screen may be coupled to the peripheral aperture. A filter cap forming a primary cavity in fluid communication with the central aperture and the peripheral aperture may be coupled to the filter body. An outflow filter screen may be coupled to the central aperture. An outflow conduit may be in fluid communication with the central aperture, and the outflow conduit may be formed by the tube outflow surface.