Tristel Duo OPH


Tristel Duo OPH is chlorine dioxide in a foam, designed specifically for the high-level disinfection of ophthalmic medical devices.

Tristel Duo OPH incorporates two separate compartments that contain Tristel Base solution (citric acid) and Tristel Activator solution (sodium chlorite). When mixed upon pressing the foam pump, Tristel’s proprietary chlorine dioxide chemistry is generated.

Tristel Duo OPH is CE marked as a Class IIa Medical Device.

Microbiological Efficacy

Tristel Duo OPH is sporicidal, mycobactericidal, virucidal, fungicidal and bactericidal. Chlorine dioxide has been tested in accredited laboratories worldwide and is proven effective against microorganisms of concern in ophthalmology, such as:

  • Acanthamoeba castellanii (one of the causative organisms of Acanthamoeba keratitis)
  • Polyomavirus SV40 (surrogate of HPV)
  • Pseudomonas aeruginosa
  • Carbapenem-resistant Klebsiella pneumoniae (CRE)
  • Vancomycin-resistant Enterococcus faecium (VRE)
  • Candida albicans
  • Fusarium solani
  • Aspergillus brasiliensis (formerly niger)
  • Aspergillus flavus
  • Adenovirus


Tristel Duo OPH is designed specifically for the high-level disinfection of ophthalmic medical devices, including:

  • Diagnostic contact lenses
  • Laser contact lenses
  • Tonometer prisms
  • Ophthalmic ultrasound probes, including (but not limited to) A-scan and B-scan ultrasound probes
  • Pachymeters

Product Options and Accessories

Tristel Duo OPH is available in six unique dual-compartment foam bottles per box. Each bottle contains 125ml Tristel Base solution and 125ml Tristel Activator solution. Each bottle provides 310 doses.


Duo Wipes are designed specifically to apply Tristel Duo foam evenly onto a surface to be disinfected. They are made of a non-woven material and are low-linting to reduce residue of fibres on surfaces. Duo Wipes are pre-cut to prevent shedding when dispensed from the tub. The use of Duo Wipes enhances cleaning and disinfection performance by allowing effective release of the liquid disinfectant onto the surface.

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