Insights

Sterilising Grade Point of Use Filtration

T-Safe®  point of use filtration devices utilise sophisticated hollow fibre ultra-filtration membrane technology that has a pore size of 0.1 µm, providing effective and reliable filtration of harmful waterborne pathogens. T-Safe® point of use filtration efficacy has been tested and validated as a sterile grade filter in accordance with The American Standard Test Method ‘ASTM F838-05 ‘Determining bacteria retention of membrane filters utilised for liquid filtration’. 

The ASTM F838-05 standard requires that a sterilising grade filter should demonstrate a guaranteed retention of 7 log steps of Brevundimonas diminuta per cm^2 of the filter area. Testing of T-Safe® point of filters was conducted by the ISO 17025 accredited test laboratory Eurofins against the following test organisms; 

T-Safe® filters are manufactured in a controlled production environment that is certified in accordance with EN ISO 13485 standards. ISO 13485 provides the guarantee that as a medical device manufacturer Tandrup have detailed and externally audited processes in place to ensure the quality, safety and effectiveness of our medical devices. This includes randomised batch testing and lot numbering that ensures consistent quality and full tractability throughout the production process. 

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Fig 1. Hollow Fibre Membrane
  • Brevundimonas diminuta
  • Legionella pneumophila
  • Pseudonomas aeruginosa
  • Aspergillus brasiliensis

Insights

Biomaster

T-Safe® medical point of use filtration devices and T-Safe® Hygiene Showers both incorporate Biomaster antimicrobial additive technology which is added to the base plastics during the manufacturing and prior to moulding. Biomaster provides permanent protection against bacteria on both internal and external surfaces that helps reduce the risk of infection from retrograde and cross contamination.  The efficacy of the Biomaster antimicrobial additive in T-Safe® products has been independently tested in accordance with ISO 22196 and proven to reduce bacteria growth by up to 99.9%

Biomaster’s antimicrobial agent is based on silver ion technology and has three modes of action. When bacteria come into contact with a Biomaster protected surface, the silver ions prevent them from growing, producing energy or replicating, therefore they die. 

Unlike some antimicrobial agents, Biomaster is incredibly durable, long lasting and highly active. When added, it is dispersed throughout the entire base material and becomes an integral part of the product. Silver is inorganic and non-leaching which means that, unlike organic antimicrobial agents or technologies, it stays within the material to which it is added. The controlled release of the active ingredient provides maximum antibacterial protection for the lifetime of the product.

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Fig. 1 Biomaster Mode of Action
Fig. 2 The Biomaster Effect

Insights

Constant flow technology

T-Safe constant flow technology ensures consistent performance over a range of water system pressures providing an optimum showering and hand washing experience, with no significant drop off in flow rates during in use life cycle.  At the heart of our intelligent constant flow system are a range of specially developed flow regulators that are incorporated into T-Safe products. These regulators ensure an optimal flow of water of between 2 to 12 litres per minute depending on the user or installation requirements. Due to the intelligent design and special shape of the regulators, there is no reduction in end user shower or hand washing comfort.

 

More than 20 litres of water per minute can pass through an unregulated outlet depending on the water pressure. A T-Safe constant flow regulator limits the water flow to either 2, 4, 6, 8, 10 or 12 litres per minute, regardless of the water pressure.

T-Safe constant flow devices incorporate an ingenious design known as pressure compensation, which ensures a constant water flow regardless of the water pressure. At a pressure of 0 bar, the O-ring will not be affected, but as the pressure increases, the O-ring will be compressed around the core causing the passageway to contract and consequently regulating the flow. 

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Fig. 1 The Pressure Compensation Effect