Abstract: A cold plasma device for killing or reducing a microbiological pathogen, or denaturing a protein in food, in a food processing system using a cold plasma device. The cold plasma device directs a cold plasma at food or a food surface over an effective area for an effective amount of time. The cold plasma device can be a DBD electrode device, or an army of DBD electrode devices. A grounding rod assembly is also described.

Abstract: The invention relates to the batch treatment of goods with gas, steam or vapor, for example sterilization and drying. The distribution of the medium surrounding the load (8) during all stages of such a process is important. According to the invention, movement of fluids within a batch treatment apparatus is achieved using a fluid ejector device (9), An apparatus for the gas, steam or vapor treatment of objects is provided, said apparatus having inside a closable chamber (1) at least one ejector device (9) of the type having a straight flow path for the secondary stream. Any particular fluid or mixture of different fluids entering the chamber during a treatment process may be introduced via an ejector device (9) in order to distribute the fluid around the load (8), or remove material deposited on the load (8). The invention eliminates the need for shaft seal arrangements involved with fans.

Abstract: An ozone-based disinfecting device is provided comprising a mixer having a generally hollow body with a water inlet for water under pressure, a spray nozzle for generating a generally conical spray of water introduced by way of the water inlet, a contact chamber communicating with a gas inlet for ozone rich gases, and an outlet aperture from the contact chamber that is coaxial with the spray nozzle and spaced apart therefrom. An electronic flow sensing device senses the extent of the flow of water through the spray nozzle according to vibration caused by water flowing through the mixer. The electronic flow sensing device is preferably located in a pocket formed in the mixer and preferably comprises a piezoelectric sensor embedded at least around its periphery in a settable material. A preferred construction of the mixer is also described.

Abstract: A nebulant suitable for sterilization comprising finely divided liquid droplets suspended in a gas, said droplets including a solute, which is advantageously hydrogen peroxide and a solvent, for example water, wherein the droplets have a concentration of greater than 60 wt % of solute and an average diameter of less than 1.0 micron, preferably less than 0.8 microns.

Abstract: An isolator includes a workroom having a first sterilizing material supply port, a first sterilizing material discharge port, a first gas supply port and a first gas discharge port, a sterilization chamber having a second sterilizing material supply port, a second sterilizing material discharge port, a second gas supply port and a second gas discharge port, a sterilizing material supply unit, a first sterilizing material supply path connecting the sterilizing material supply unit to the first sterilizing material supply port, a second sterilizing material supply path connecting the sterilizing material supply unit to the second sterilizing material supply port, a first circulating path connecting the first sterilizing material discharge port to the sterilizing material supply unit, a second circulating path connecting the second sterilizing material discharge port to the sterilizing material supply unit, a first gas supply path, a second gas supply path, a first gas discharge path, a second gas discharge path

Abstract: The present invention provides an apparatus for decontaminating a region. The apparatus includes a housing that defines a chamber therein. The housing has an inlet and an outlet that communicate with the chamber. A blower circulates a carrier gas from the region, through the inlet of the housing, through the chamber and out through the outlet of the housing. An atomizer introduces an atomized mist of a fluid into the carrier gas circulated through the chamber. A diffuser is disposed relative to the outlet of the chamber for redirecting said carrier gas exiting said outlet of said chamber into a predetermined direction. The diffuser includes a heating element.

Abstract: The presently disclosed debris collection system includes an elongate body having a first end, a second end, and a bore extending therethrough. The first end of the elongate body is hermetically closed while the second end has an opening. The elongated body is made of an impermeable material. A cap fixed to the elongated body and has a bore extending therethrough. A port, which is attached to the cap, is designed for introducing fluid into the elongated body. A watertight seal, such as a gasket, is attached to the cap. The seal is also made of an impermeable material. In operation, a liquid is introduced into the debris collection system. A surgical tool must then be introduced into the system. Thereafter, a vortex is created within the system to debride debris from the surgical tool.

Abstract: An endoscope cleaning/disinfecting apparatus of the invention includes: a processing tank including an opening portion; an apparatus main body which performs processing on an endoscope arranged in the processing tank; a lid member which opens and closes the opening portion; an electric actuator which is connected to the lid member and which generates a pressing force for pressing the lid member toward the opening portion; and a control section connected to the apparatus main body and the electric actuator, the control section causing the electric actuator to continue to generate the pressing force for pressing the lid member toward the opening portion in a predetermined period during execution of the processing, and causing the electric actuator to stop generating the pressing force in a period other than the predetermined period.

Abstract: An apparatus for sanitizing a writing instrument comprising a vessel capable of containing an absorbent material, a sanitizing fluid and a writing instrument. The apparatus includes a cover, capable of being attached to the vessel and having an aperture through which a writing instrument may be received. An absorbent material is disposed within the vessel, and includes a channel for receiving a writing instrument for sanitizing. A sanitizing fluid capable of sanitizing a writing instrument, is disbursed within the absorbent material. A writing instrument is attached to the apparatus with a connector and can be inserted into the aperture and further inserted into the channel of the absorbent material. When inserted into the absorbent material, the writing instrument is sanitized by the sanitizing fluid disbursed within the absorbent material.

Abstract: A sterilizer is connectable to an external chamber. A sterilization gas generator is configured to generate sterilization gas. A gas supply system including a first gas supply system which is configured to supply the sterilization gas from the sterilization gas generator to a sterilization chamber; and a second gas supply system which is different from the first gas supply system and configured to supply the sterilization gas from the sterilization gas generator to the external chamber.

Abstract: The device is suitable in particular for treating medical endoscopes. At least one treatment fluid is fed through a conduit system (3) to a channel attachment (4), to which a channel of the instrument to be treated can be attached. The conduit system has a fluid attachment (39), which can be connected to a source of treatment fluid. With the aid of a measuring device, the flow of the treatment fluid in the conduit system, and thus the permeability of the attached channel, can be measured. The measurement is effected with the aid of a measurement section (6) in which a flow sensor (7, 7?) is arranged. All the treatment steps are carried out via the conduit system and in particular also via the measurement section. In this way, the conduit system is subjected to the same process as the instrument to be treated, and a flow measurement can be carried out in each individual treatment step.

Abstract: A system for gas sterilization includes a sterilization chamber, a source of sterilant gas, and a sterilant gas remediation mechanism. Embodiments relate to systems and methods for delivering humidified air to a sterilization chamber, systems and methods for removing gaseous NO2 from an exhaust gas stream of a sterilization chamber, systems and methods for removing and replacing a source of sterilant gas, an exhaust gas scrubber and/or supplies for a humidification system. Some embodiments relate to hardware and software for user interface in a sterilizing device and hardware and software for control of a sterilization cycle. Some embodiments relate to chamber, chassis and door configurations of a sterilizer.

Abstract: A device for decontaminating a medical device, the device including a compartment adapted to contain a medical device and a solution, the solution comprising a photoactivatable substance; and a light system providing 360 degrees of exposure to the compartment. Also, a method for decontaminating a medical device, the method including placing a medical device in a compartment with a solution, the solution comprising a photoactivatable substance; incubating the medical device in the solution to allow the photoactivatable substance to attach to pathogens; and exposing the compartment to 360 degrees of light exposure to activate the photoactivatable substance.

Abstract: An electrostatic spraying system for decontamination of a vehicle is described. The system includes a wheeled platform sized to fit inside the vehicle, at least one tank operable to contain one or more decontaminant agents, the tanks supported by said wheeled platform, a plurality of nozzles affixed to the wheeled platform, wherein each nozzle is positioned for distribution of the decontaminant agents in at least one pre-determined direction, an electrostatic charging system connected to each of the nozzles for applying an electrostatic charge to the decontaminant agents as the agents are dispersed, and at least one compressor in communication with the tanks for pressurizing the decontaminant agents. The one or more compressors are capable of providing a pressure sufficient to provide a constant distribution of the decontaminant agents through the electrostatic nozzles.

Abstract: A gas sterilization apparatus comprises a housing with a sterilizing unit and a power device. An ozone generator and an air purifying device are provided in the housing. The power device is operated to allow air to pass through the ozone generator and flow into the sterilizing unit so as to perform sterilization. After being sterilized, the air in the sterilizing unit can be drained via the purification of the air purifying device. The gas sterilization apparatus can sterilize the air by use of ozone, thus it is applicable for articles and materials which can be sufficiently soaked by ozone to achieve the sterilization effect, and it can reduce the denaturation of biological materials, so it has wide application. The gas sterilization apparatus can sterilize the articles and materials in simple and convenient ways for user, so it is beneficial to use in the industry.

Abstract: A system, device and method for sterilizing or decontaminating an object that includes a sealable sterilizing chamber (12) and a sterilant gas-generating composition (24) that preferably generates NO or a mixture of NO and NO2. The preferred sterilant gas-generating composition (24) includes a carbon-based diazeniumdiolate compound and a powdered acid.

Abstract: The invention relates to a fractional vacuum sterilization method for objects such as blood tubing systems or cassette systems, which are sterilized in outer packagings. The spatial extent of the outer packaging during the evacuation step is minimized here by inserting a packing into the sterilization chamber and thereby achieving an efficient gas exchange through the gas-permeable outer packaging. The number of vacuum-pressure cycles required to establish a saturated sterilization medium atmosphere in the outer packaging and in the object to be sterilized is thereby reduced.

Abstract: Methods and apparatus for liquid, gas, and gas plasma sterilization of items. The apparatus includes two chambers and a holder to connectorlessly secure a lumened instrument such that a first portion of the lumened instrument lies in the first chamber and a second portion of the instrument lies in the second chamber, a liquid medium contained within the two chambers, and pumping means for simultaneously increasing fluid pressure within the first chamber of said container while decreasing fluid pressure within the second chamber of the container in a reciprocating fashion. The pumping means displaces at least a total internal volume of the liquid medium through the lumen for a given highest volume of a lumened instrument during a stroke.

Abstract: The present invention provides an apparatus and method for disinfecting a target area of a patient's body, such as an arm, leg or a chest, in a pre-surgical environment. The apparatus and method disclosed herein further provides for maintaining the target area of the patient's body in an aseptic condition while transporting the patient to and into the surgery room. The most preferred embodiments of the present invention contemplate the use of one or more sterile layers (e.g., sterilized bags or the like) that are used to enclose the target area of the patient's body coupled with a sterile substance delivery mechanism that disinfects the target area and also maintains the target area in an aseptic condition. The most preferred embodiments of the present invention comprise a single-layer disposable garment or an inner bag nested inside an outer bag with a sterilization material being introduced into the inner bag, thereby disinfecting the target area.

Abstract: Provided herein are systems and methods for separation of particulate from water using ultrasonically generated acoustic standing waves.

Abstract: A system for recovery and reutilization of sterilant gas mixture from a sterilizer chamber includes a storage tank in gaseous communication with a sterilizer chamber via a gas recovery assembly, wherein after sterilization the gas recovery assembly evacuates the sterilant gas mixture to the storage recovery tank. The system also includes an inert purge gas supply adapted to supply a purge gas to the sterilizer chamber after the sterilant gas mixture is withdrawn to the storage recovery tank, wherein the gas recovery assembly evacuates an additional portion of the purge gas from the sterilizer chamber to the storage tank to enrich the gas mixture for later reutilization in subsequent sterilization cycles.

Abstract: The invention relates to a device for sterilizing caps or the like closures for closing bottles or the like containers. Said device comprises a conveyor system conveying the caps in a direction of conveyance through a treatment section having a plurality of successive treatment stations in the direction of conveyance.

Abstract: Embodiments of the invention generally provide an apparatus and method for decontaminating tubing. The invention is particularly suitable for decontaminating tubing in a test system used for certifying a filter in a containment system. In one embodiment, a test system for a containment system is provide that includes a sample system including equipment adapted for testing a filter disposed in a containment system utilizing samples obtained from a downstream sample port and a upstream sample port of the containment system, and a device for reversing a flow within the sample system. In another aspect of the invention, a method for decontaminating tubing is provided. In another embodiment, the method includes flowing a sterilization agent through tubing in a first direction and flowing the sterilization agent through tubing in a second direction.

Abstract: A decontamination enclosure, comprised of a plurality of preformed panels joined together to form a structure defining a totally enclosed chamber. A door is formed in at least one of the panels, the door being movable between an opened position and a closed position to allow access to the chamber. A circulation system is attached to the structure for circulating vaporized hydrogen peroxide through the chamber. A controller is provided for controlling the amount of vaporized hydrogen peroxide introduced into the chamber.

Abstract: An apparatus for the solvent extraction of oil-bearing materials having a two-deck, loop-shaped housing is provided. The apparatus has a feed inlet for the materials and an outlet for the solvent-wet extracted materials. An assembly of two or more endless chains are connected by a series of baffle plates and driven by a set of two or more drive sprockets that transport the materials from the feed inlet to the outlet over an upper deck, along an elbow and over a lower deck the end of which serves as a draining section, both of which decks retain the materials but let miscella pass through. Inside the housing, the materials are sprayed with solvent that percolates through the materials and is collected below the decks and sprayed again onto the materials in a counter-current manner.

Abstract: The invention relates to the saturation of different gaseous, liquid, gel-like, solid and mixed media with ingredients emitted by vegetative plants. The method for treating a medium by saturating it with useful substances emitted by plants involves supplying a gaseous medium to a chamber containing vegetative or cut plants and passing the gaseous medium saturated with plant excreta through the medium undergoing treatment. Furthermore, a low pressure or a low and a high pressure is generated in the above-mentioned gaseous medium in the chamber containing the vegetative or cut plants. The medium treating device comprises a means for pumping the gaseous medium, at least one chamber for plants emitting plant excreta, which chamber is connected by a pipe to the above-mentioned means on the intake side and to the pumping means on the discharge side; furthermore, the above-mentioned means is connected on the discharge side to at least one container for the medium undergoing treatment.

Abstract: Apparatus and methods for enhanced electrocoagulation processing using enhanced membrane aeration are disclosed for effluent treatment. The apparatus has an enrichment means for establishing an ion rich air/gas stream and a membrane aerator for receiving the ionized air/gas stream and effluent to be treated. An ionized air/gas rich effluent feed stream flows out of the membrane aerator and is received at an electrocoagulation processing assembly for diffused ion enhanced electrocoagulation treatment.

Abstract: Embodiments described herein may include systems and method for monitoring physiological parameters of a patient. Specifically, embodiments disclose wireless, reusable, rechargeable medical sensors that include an inductive coil coupled to a rechargeable battery. Additionally, embodiments disclose systems and methods for recharging and disinfecting the disclosed medical sensors.

Abstract: The present invention relates to a method for sterilizing an article inside a sealed container by placing a polyoxymethylene melt formable co-polymer fiber that has been irradiated between about 1 and 200 kGy and then heated at from about 20° C. to about 90° C. for a selected period of time.

Abstract: An isolator includes a work chamber, a sterilizing substance supply unit, a gas flow channel pressure adjustment unit, a work chamber barometer, and a controller. The controller is configured to control execution of a gas flow channel leak test for checking a gas leak in a gas flow channel based on a detection result by the work chamber barometer after making the gas flow channel pressure adjustment unit increase or decrease the pressure in the gas flow channel, and is configured to control supply of the sterilizing substance by the sterilizing substance supply unit. The controller performs heating of a heater, which accompanies the supply of the sterilizing substance, in parallel with the gas flow channel leak test.

Abstract: A chemical vapor sterilization process is enhanced by concentrating a germicide via exploitation of the difference between the vapor pressures of the germicide and its solvent. A diffusion restriction can be placed into the diffusion path to assist this process and the path then opened to provide rapid diffusion of the thus concentrated germicide. The path through the diffusion restriction can be closed to allow the pressure in a sterilization chamber to be lowered prior to receiving the concentrated germicide.

Abstract: Methods and apparatus for liquid, gas, and gas plasma sterilization of items. The apparatus includes two chambers and a holder to connectorlessly secure a lumened instrument such that a first portion of the lumened instrument lies in the first chamber and a second portion of the instrument lies in the second chamber, a liquid medium contained within the two chambers, and pumping means for simultaneously increasing fluid pressure within the first chamber of said container while decreasing fluid pressure within the second chamber of the container in a reciprocating fashion. The pumping means displaces at least a total internal volume of the liquid medium through the lumen for a given highest volume of a lumened instrument during each stroke.

Abstract: A system and method are provided for sanitizing a gas pump handle. A cover at least partially encloses the gas pump handle. The cover is able to be moved from a covered position to an uncovered position. Located on the cover are one or more nozzles or foggers for dispensing sanitizing fluid onto the handle. Sensors detect the position of the cover or the detect whether or not the handle is in the rest position. A controller, in communication with the sensors, sends a command to a pump to spray sanitizer through the nozzle or foggers after a user has pumped gas and returned the handle or the cover to the rest position.

Abstract: To improve throughput of biomedical waste treatment, the present inventors devised an exemplary ozone-based system including a shredder, a roll-off treatment bin with ozone injectors, an ozone source, and a controller. The controller monitors electric current drawn by the shredder as shredded waste enters the ozone-enriched treatment bin. In response to current falling below a predetermined low level, indicating that a batch of waste has been shredded and loaded into the treatment bin, the controller starts a treatment timer. The timer measures elapsed ozone treatment or exposure time. If additional waste is added to the shredder and a subsequent low-current condition is detected, the controller restarts the treatment timer. Expiration of the timer indicates that the waste in the roll-off bin is sterilized and ready for transport to landfills. The exemplary system provides continuous waste processing and promises to boost throughput by 50% over some conventional ozone-based waste-treatment systems.

Abstract: Methods and systems for programmed dispensation of consumable compositions are provided. A method for sterilizing a beverage container may include, but is not limited to: (a) detecting a sterilization status of a container; and (b) controlling functionality of a controllable device according to the sterilization status. A system for sterilizing a beverage container may include, but is not limited to: (a) means for detecting a sterilization status of a container; and (b) means for controlling functionality of a controllable device according to the sterilization status.

Abstract: A mobile body disinfection apparatus includes a carrying structure rendered mobile by means of a plurality of wheels attached thereto, a waste collection vessel, a liquid disinfectant dispensing element operated by a photoelectric cell and/or by a dispensing timer control, a filling tank, a supply line to carry the liquid disinfectant from the tank to the dispensing element, a waste tank connected to said washbasin, a drainage line and a central command and control unit suitable to manage at least the liquid disinfectant dispensing operations. The supply line comprises, in turn, at least one pump and one filter suitable to guarantee the elimination of infective elements that might be present in the water coming from the water distribution network and to guarantee a filtering of the liquid disinfectant that might have been contaminated even after filling the apparatus.

Abstract: A powder dispenser for a waste disposal system includes a mounting portion that is adapted to be secured to a waste disposal unit, and a container defining an interior space in which a powder such as sodium bicarbonate may be stored. The container is releasably mounted to the underside of a hinged lid member of the waste disposal unit. A directional dispensing system is provided for dispensing powder from the container into a targeted portion of the waste disposal system. The directional dispensing system is constructed and arranged to concentrate initial dispersal of the powder to a single side of the container and includes a dispensing orifice. The dispensing orifice is preferably oriented to limit initial dispersal of the powder within a defined angular range with respect to the longitudinal axis of the lid member, and is spaced axially and laterally with respect to the waste disposal unit at distances that facilitate distribution of the powder to desired targeted portions of the waste disposal unit.

Abstract: Disclosed herein are disinfecting caps that can be used to cover and disinfect a male luer post of a medical connector. The caps are configured to engage threads of the connector. The caps contain a disinfecting agent within an absorbent pad disposed in a chamber of the cap.

Abstract: One or more caps can be used to cover and sterilize one or more separated medical connectors. A pair of caps can be connected to each other and sealed when in a pre-use state. The paired caps can be unsealed so as to permit connection to the medical connectors.

Abstract: A control system for multiple sterilization chambers for the sterilization of medical and other instruments interact with a common vacuum pump, steam generator and ozone generator via a common controller. Instead of placing all instruments of one type in one large chamber and running one generic sterilization program followed by another such program, instruments may be grouped by the type of sterilization program needed and the sterilization programs may be run using a single pump and a single ozone generator fed into multiple sterilization chambers controlled by the controller. One smaller and less expensive vacuum pump and ozone generator may be sufficient to sterilize large amounts of medical equipment present in the total assembly of chambers. The controller may run sterilization programs in parallel fully or overlapping partially in time. Control valves governing flow passage of air, steam and ozone in and out of the chambers are also controlled by the controller.

Abstract: Disclosed herein are disinfecting caps that can be used to cover and disinfect a male luer post of a medical connector when not in use or when disconnected from its female connector counterpart. The caps are configured to engage threads of the connector. The caps contain a disinfecting agent disposed in a chamber of the cap.

Abstract: A device for the disinfection, sterilization and/or maintenance of medical, in particular dental instruments. The device is optimized in various areas, facilitating the fully automatic, reliable and reproducible preparation of dental instruments.

Abstract: A method and apparatus for dispensing sanitizer fluid from a door handle, including a latch mechanism lever adapted for coupling to a door latch mechanism and a trigger lever coupled to the latch mechanism lever. The latch mechanism lever can be selectively actuated independent of the trigger lever to actuate the door latch mechanism without dispensing sanitizer fluid. The apparatus may further include a sanitizer fluid reservoir and a pump coupled to the trigger lever to control sanitizer fluid flow from the sanitizer fluid reservoir to a nozzle when the trigger lever is actuated, where the nozzle is positioned proximate the latch mechanism lever. Embodiments of the invention may further include a method of use of the apparatus.

Abstract: A method for disinfecting a volume or surfaces bounding a volume comprising nebulising a solution comprising a sterilizing agent in a solvent having a lower boiling point than the sterilizing agent, for example ultrasonic nebulization of aqueous hydrogen peroxide, to form a nebulant. The nebulant is subjected to energy of a kind and for a duration sufficient to vaporize solvent in preference to sterilizing agent, eg heating element means, infra red, laser, microwave, RF or other radiation generating means; induction heating means; heat exchanger means; conduction means; convection means; or mechanical energy transfer means to increase the concentration of the agent in the nebulant particles. Vaporized solvent is removed from the gas stream at or above atmospheric pressure and, if necessary, the nebulant is cooled to below 70° C. The volume or surfaces are exposed to the nebulant for a time sufficient to sterilize said volume or surfaces. Also, apparatus for carrying out the method.

Abstract: A decontamination-solution spray device includes: an atomizer including first and second ports and a nozzle; a first pipe having one end and an other end respectively connected to an air compressor and the first port; a second pipe, provided lower than the second port, having one end connected to the second port and an other end open; a reservoir portion to store a decontamination solution; a pump to pump up the solution from the reservoir portion; and a third pipe, having one end connected to the pump, thorough which the decontamination solution taken in by the pump flows, the atomizer to, suck the decontamination solution flowing through the third pipe via the second pipe, by negative pressure produced in the second port by injecting air taken in from the first port from the nozzle; and inject the solution in an atomized state from the nozzle, mixing the solution with air.

Abstract: A sterilization cap carried on a needle support end of a syringe. The cap includes a main body having first and second ends, the first end being connectable to the needle support end, as well as being connectable onto the needle support end alone of a primary or IV extension line. A sponge secured within a sponge cavity within the second end is saturated with a sterilizing liquid. A removable cover attached to the second sealingly encloses the sponge until the syringe is used. The second end is sized, when the cover is removed, to fit over a tip of a CLAVE needleless connector extension or IV tubing a distance sufficient to compress the sponge to sterilize the tip with sterilizing liquid expressed from the sponge.

Abstract: Sanitization apparatuses, kits, and methods for sanitizing stethoscopes (e.g., at least one side of a bell and/or diaphragm of a stethoscope chestpiece).

Abstract: The present invention relates to a service and maintenance station for a handheld drug delivery device of pen-injector type, comprising: a receptacle section to receive at least a portion of the drug delivery device, at least one service module adapted to maintain and/or to restore the operability of the drug delivery device, wherein the at least one service module comprises a cleaning and/or sterilizing module adapted to receive, to clean and/or to sterilize a distal end section of the drug delivery device to be connected with a piercing assembly.

Abstract: A capping device is configured to terminate a connector while disconnected from another connector in a fluid transportation system, e.g., for peritoneal dialysis. The connector comprises an exposed surface portion that is enclosed when the connector is connected to the other connector. The capping device comprises a body defining a chamber with an opening, a liquid-containing disinfectant in the chamber, a sealing element arranged in the opening to form a sealed cavity retaining the disinfectant, and a structure for engaging and guiding the connector towards the body such that a portion of the connector displaces the sealing element into the chamber. The sealed cavity is configured such that a displacement of the sealing element into the chamber actively presses the disinfectant out of the sealed cavity, for disinfecting at least part of the exposed surface portion.

Abstract: Sensors, such as optical sensors and other sensors used in an aqueous environment are protected from biological contamination by applying a biocide behind a shutter. The shutter is capable of covering a subject portion of the sensor or surrounding mounting surface adjacent the sensor in at least a semi-sealing manner. A well or reservoir forms a chamber in the shutter that is capable of holding a biocide having a limited water solubility and a low environmental toxicity in the aqueous environment, for example, anhydrous iodine crystals. The reservoir is in communication with the portion of the sensor while positioned against the portion of the sensor or surrounding mounting surface adjacent the sensor.