Tristel Duo NCU

Tristel Duo NCU is a chlorine dioxide-based foam designed specifically for the intermediate-level disinfection of non-critical ultrasound probes and equipment such as skin surface transducers, cords, plugs and control panels.

Tristel Duo NCU delivers the required level of disinfection , and is easy to implement in a wide variety of areas where POCUS is performed due to its size and simplicity.


The joint ACIPC and ASUM Guidelines for Disinfection of Ultrasound Transducers highlight that use of skin surface transducers in some areas may require a higher level of disinfection. With cleaning not equating to appropriate disinfection; low-level disinfection covering only a limited range of microorganisms and high-level disinfection being impractical or time-consuming, intermediate-level disinfection provides the answer.


Tristel Duo NCU is effective in 30 seconds against microorganisms of concern, including:

  • Mycobacterium avium
  • Mycobacterium terrae
  • Poliovirus Type 1
  • Adenovirus Type 5
  • Norovirus
  • Influenza (H1N1)
  • Herpes Simplex Virus Type 1
  • Human Papillomavirus (HPV)
  • Vaccinia virus
  • Candida albicans
  • Aspergillus brasiliensis
  • Staphylococcus aureus
  • Pseudomonas aeruginosa
  • Enterococcus hirae
  • Carbapenemase-resistant Enterobacteriaceae (CRE) Klebsiella pneumoniae
  • Vancomycin-resistant Enterococci (VRE) Enterococcus faecium


Tristel Duo NCU is designed to be portable, and can be used for either clinic, portable or POCUS applications. These include:

  • Emergency Services
  • Radiology
  • Intensive Care
  • Theatres
  • Renal Ultrasound
  • Birthing Suites & Maternity
  • Physiotherapy
  • General hospital portable Ultrasound


… and anywhere where Ultrasound is used for invasive procedures such as line insertion, musculoskeletal procedures (MSK), needle guided biopsies, anaesthetic blocks and areas proximal to mucosa or areas that come into contact with probe covers.

Product Options

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

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

Each bottle of Duo NCU provides 310 aliquots of disinfection foam.

Product Accessories

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

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


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

Tristel Duo NCU 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.