Tristel Duo OPH

Tristel Duo OPH is an effective, fast and compliant high-level disinfectant for for medical devices used in ophthalmology and optometry.


Devices that touch the surface of the eye are required to undergo high-level disinfection, and it is the responsibility of practitioners to ensure they are achieving compliance. Eye care is often viewed as a low-risk area, and it is often mistakenly assumed that a low-level disinfectant will be suitable, resulting in inadequate device disinfection. This includes alcohol wipes and sodium hypochlorite soaking.

Duo OPH is a high-level disinfectant, effective against required organisms and those of concern at low-concentrations and short contact times. This enables quick reprocessing of medical devices at point of use, increasing patient throughput.


Tristel Duo OPH is a high-level disinfectant and is proven effective against a wide range of microorganisms, including:

  • Pseudomonas aeruginosa
  • Carbapenem-resistant Klebsiella pneumoniae (CRE)
  • Vancomycin-resistant Enterococcus faecium (VRE)
  • Candida albicans
  • Aspergillus brasiliensis
  • Adenovirus (responsible for adenoviral epidemic keratoconjunctivitis)
  • Herpes Simplex Virus type 1


Use Tristel Duo OPH to high-level disinfect devices used in ophthalmology and optometry including:

  • Diagnostic contact lenses
  • Laser contact lenses
  • Tonometer prisms
  • Ophthalmic ultrasound probes, including A-scan and B-scan ultrasound probes
  • Pachymeters

Product Options

Tristel Duo OPH is available in boxes of 2 x 250ml and also boxes of 6 x 250ml.

Each bottle comprises two compartments containing 125ml Tristel Base Solution (citric acid) and 125ml Tristel Activator Solution (sodium chlorite).

Each bottle of Tristel Duo OPH provides 310 aliquots of disinfectant foam, which is equivalent to 155 high-level disinfection procedures.

To ensure the maximum amount of foam is applied to the medical device, pair Tristel Duo OPH with the low absorbing Duo Wipes.

Tristel Duo OPH can fit inside a pocket or bag. Alternatively, keep Tristel Duo OPH within reach with a Duo DOK.

Product Accessories

To ensure the maximum amount of foam is applied to the medical device, pair Tristel Duo OPH with the low absorbing Duo Wipes.

Tristel Duo OPH can fit inside a pocket or bag. Alternatively, to keep Tristel Duo OPH within reach, affix Duo DOK to a wall.


Tristel Duo OPH conforms to the Medical Device Directive and is CE marked as a Class IIa Medical Device.

Tristel Duo OPH has been independently tested and meets European Norm requirements within EN14885 and the latest efficacy standards for the medical area.

Tristel Duo OPH passes local regulatory requirements for Australia and New Zealand. Other approvals include Israel, India, China, Malaysia, Taiwan, Thailand, Saudi Arabia, and the United Arab Emirates.


Tristel Duo OPH has been tested and proven to be compatible with major medical device manufacturers including Haag-Streit, Ellex, Volk, Quantel Medical, Reichert and Accutome.

For more information on our compatibility testing, please view our Compatibility Guide.


Keep track of each Tristel Duo OPH disinfection procedure with Tristel 3T.

Tristel 3T includes a Portal for setup, data management and reporting purposes and an App on a smart device to record Tristel decontamination procedures.

The 3T App captures the user, Tristel product, medical device, and patient number via the scanning of barcodes, minimising human error. The 3T App is used during the decontamination procedure, saving valuable time.

Tristel 3T stores data on a secure Microsoft Azure Cloud. Unlike traditional paper-based methods which could be accessed by anyone, 3T data is password protected on the Portal.


Tristel Duo OPH utilises Tristel’s proprietary chlorine dioxide chemistry, a well-documented and highly effective biocide.

Tristel Duo OPH has two separate compartments that contain 125ml of Tristel Base Solution (citric acid) and 125ml of Tristel Activator Solution (sodium chlorite). Upon pressing the pump, the two solutions mix, and chlorine dioxide chemistry is generated.

Chlorine dioxide does not form hazardous by-products or halogenated compounds.

Due to the way chlorine dioxide breaks down and destroys microorganisms, resistance cannot develop over time. Find out more about the mode of action of chlorine dioxide here.

After-Sales Support

Product training is an essential part of guideline compliance and is crucial to the correct implementation of any disinfection protocol.

Tristel’s Training Portal can be accessed at a time and place convenient for you.

To complement our Training Portal, Tristel’s team of Sales Representatives offer online or on-site training, product rollout and audit support for your healthcare facility. Speak to a member of our team to find out more.

Other support materials include User Guides and Wall Charts, which can be found within the Resources section.