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Virkon® / RelyOn™
Multi-Purpose Disinfectant Cleaner

Over the years, rebreather divers have used many products as breathing loop disinfectants and cleaners, often with questionable safety, uncertain efficacy, and poor material compatibility. In 2002 at the request of the Canadian Forces diving community, Defence Research and Development Canada studied nine different disinfectants: Advance TBE, BI-Arrest, Buddy Clean, CaviCide®, Confidence, Listerine® Antiseptic, Sanizide™, TriGene II, and Virkon®. They concluded that only one, Virkon, could be primarily recommended for disinfecting rebreathers.

Virkon was developed and is manufactured at the Antec International facility in the UK, which became a DuPont company late in 2003. Virkon's most common formulation is used in veterinary/animal livestock applications. DuPont changed the name of the Virkon formulation suitable for human use to be RelyOn™ Multi-Purpose Disinfectant Cleaner. RelyOn MDC is manufactured under more strenuous production controls and quality assurance testing, making it suitable for human use.

Product Features

• RelyOn MDC is effective against a wide range of viral, bacterial, and fungal pathogens including Influenza, HIV, Hepatitis A, B and C, MRSA, VRE, RSV and Norovirus (Norwalk-like virus).
• RelyOn MDC contains a surfactant and will clean and disinfect in one step.
• RelyOn MDC 1% solution is non-irritating to skin and eyes on incidental contact as well as less corrosive to environmental surfaces.
• RelyOn MDC, when used as directed, is compatible with rebreather materials and will not harm elastomer O-ring seals, counterlungs, corrugated hoses or any other components in the breathing loop.
• RelyOn MDC is available as a space-saving dry concentrate in the form of an effervescing tablet, avoiding the leakage problems of transporting liquids.
• RelyOn MDC is pleasant to use with a faint lemon odor.

Directions for Use
RelyOn MDC is available in tubes of effervescing 5-gram tablets along with a properly labeled 16-ounce convenience spray bottle. To use, add one RelyOn MDC 5g tablet to 16 ounces of ordinary drinking water to prepare a 1% solution. Follow the recommendations from the rebreather manufacturer for disinfecting and cleaning your rebreather, allowing the solution to contact surfaces to be disinfected for 10 minutes and then rinsing with water.

to view the material safety data sheet (MSDS) for RelyOn MDC.

MCG-111 is also the recommended lubricant for use in maintaining the regulators used in the Dive Rite and APD rebreathers. We offer CHRISTO-LUBE MCG-111 in 2-ounce tubes, a convenient quantity and package for use with your rebreather.

to view the material safety data sheet (MSDS) for CHRISTO-LUBE.

We offer DeoxIT GOLD GN5 in a 14g mini-spray 5% solution with non-drip applicator (approximately 75+ applications when used as directed), a convenient quantity and package for use with your rebreather. The GN5 spray formulation contains no petroleum distillates and is quick-dry, non-flammable and safe for plastics. DeoxIT GOLD is also excellent for maintaining the electrical contacts of the Delta P Technologies VR3 battery contacts, I/O port and cable.

to view the material safety data sheet (MSDS) for DeoxIT GOLD.

Never use the cleaners commonly associated with SCUBA maintenance. Many such cleaners contain solvents that are polar and also may leave residues, making them a potential problem in low current applications. This is also true of many household products such as rubbing alcohol.

Never use ordinary 'tuner cleaner' products for cleaning precious metal contacts, particularly with rebreathers. Their cleaning action is too harsh and most formulations sold by consumer electronics retailers contain petroleum distillates, which are flammable and not safe for use with some plastics.

Never use silicone based cleaner/lubricants with electrical contacts, even though this is an often suggested practice. Silicone products will react with plastics and other contaminates to form insulating films and silicone carbide compounds which can cause intermittent connections.

Never use a pencil eraser to clean precious metal contacts, even though this is another common practice. Erasers are highly abrasive and will remove the ultra thin precious metal plating. Further, the glue in erasers leaves behind a film that is extremely difficult to remove and can also cause intermittent connections.