Raw Materials / Properties of Plastics

Material compliance and safety of TPP products

All TPP products are manufactured from fully synthetic raw materials and contain no components of animal origin.

The materials used meet recognized standards for medical and laboratory applications, including:

  • Compliance with USP Class VI biocompatibility requirements
  • Use of medical-grade raw materials

TPP products are classified according to applicable European medical device regulations. The former Directive 93/42/EEC (MDD) has been replaced by the current Regulation (EU) 2017/745 (MDR), which now defines the regulatory framework.

TSE/BSE compliance

All TPP products are:

  • animal origin-free
  • free from TSE/BSE (Transmissible Spongiform Encephalopathy / Bovine Spongiform Encephalopathy)
  • manufactured without the use of specified risk materials (SRM) in accordance with relevant EU requirements

User-relevant summary

  • No risk from animal-derived contamination
  • Suitable for sensitive applications in cell culture, diagnostics, and research
  • Aligned with current regulatory and biocompatibility standards
Heat Resistance
Polyethylene Permanent loading: 70 - 80 °C / 158 - 176 °F (short term max 100 °C / 212 °F), cannot be autoclaved
Polypropylene Permanent loading: 100 - 110 °C / 212 - 230 °F, (short term max 140 °C / 284 °F), can be autoclaved
Polystyrene Permanent loading: 60 - 70 °C / 140 - 158 °F, (short term max 80 °C / 176 °F), cannot be autoclaved
Low Temperature Resistance
Polyethylene -40 °C / -104 °F
Polypropylene -190 °C / -374 °F
Polystyrene -40°C / -104 °F
Optical Properties
Polyethylene translucent to opaque
Polypropylene translucent, shiny surface
Polystyrene transparent, shiny surface with 90 % transparency index at 400 - 800 nm
Mechanical Properties
Polyethylene low tensile strength and surface hardness; high ductility at soft and harder levels; low resistance to stress cracking; water repellent; susceptible to electrostatic charging
Polypropylene high fracture strength; dimensionally stable; high stiffness, strong and hard
Polystyrene low fracture ductility; low warm strength; excellent electrical insulation properties; not suitable for use at high centrifugal loads
Chemical Resistance
Polyethylene exhibits high resistance; dilute acids, alkalis, alcohol; oil and salt solutions do not attack, concentrated and oxidising acids such as nitric acid and the halogens, lead to disintegration
Polypropylene high resistance to aqueous solutions of organic salts, acids and alkalis, as well as to organic solvents up to 60 °C; stable in alcohols, esters and ketones; aromatic and halogenated hydrocarbons, oxidising substances such as concentrated nitric acid and at higher temperatures, fats, oils and waxes all lead to swelling
Polystyrene high resistance to salt and caustic solutions, non-oxidising acids, alkalis and alcohols. Petroleum spirit, ethereal oils, strongly oxidising agents and aromatic attack and give rise to stress cracking
Disposal
PE / PP / PS all raw materials are pure hydrocarbon compounds and therefore neutral to the environment, no harmful substances are generated during controlled burning

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