Sterilization Cases and Trays

Impact Strength, Steam Resistance and Transparency

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Radel® polyphenylsulfone (PPSU) is an incredibly tough, transparent plastic that can withstand more than 1,000 cycles of steam sterilization without any significant loss of properties. This makes it an excellent choice for cases, trays and other reusable medical devices.

PPSU delivers higher impact strength than polycarbonate (PC) and polyetherimide (PEI) and retains its toughness and strength over time. It also offers superior chemical resistance, making it highly resistant to commonly used cleaners and disinfectants over a broad temperature range.

Key Features

  • High heat resistance
  • Superior impact strength
  • Withstands over 1,000 autoclave cycles
  • Excellent chemical resistance
  • ISO 10993:1
  • Transparent and opaque
  • Colors available



Virtually Unlimited Steam Sterilizability

Steam autoclaving is the primary sterilization method used for cases and trays. Temperatures typically range between 121°C to 134°C (250°F to 273°F) with exposure times of 15 to 30 minutes.

Radel PPSU is unique among amorphous thermoplastics in its ability to withstand more than 1,000 cycles of steam sterilization without any significant loss of properties. Its toughness and strength are retained over time, unlike polycarbonate (PC) and polyetherimide (PEI) which exhibit a significant loss of impact strength and becomes brittle.

Retention of impact strength


Cleaning & Disinfection

Radel PPSU is highly resistant to song solutions of aqueous caustic solutions like sodium hydroxide, which has become one of the preferred methods for sterilization against Creutzfeldt-Jakob disease.

Ingredients are often added to cleaners and disinfectants to improve surface wetting and reduce evaporation. Our experience has shown that these chemicals can have a more detrimental affect on plastics than cleaners and disinfectants by themselves. This is primarily due to improper dilution or insufficient rinsing. Be sure to follow the manufacturer’s instructions to optimize the performance of the plastic.

General Indication of Chemical ResistanceRadel®
General Chemicals
Acids, ConcentratedExcellentFair
Acids, DilutedExcellentGood
Bases, ConcentratedExcellentPoor
Baes, DilutedExcellentPoor
Hydrocarbons, AliphaticExcellentPoor
Hydrocarbons, AromaticFairPoor
Hydrocarbons, ChlorinatedFairPoor
Hospital Disinfectants
Bleach Solutions, 10%ExcellentGood
Hydrogen Peroxide, 3%ExcellentGood
Isopropyl Alcohol, 70%ExcellentGood
Phenols, 2%ExcellentGood
Sani-Cloth® HBExcellentPoor
Sani-Cloth® PlusExcellentPoor
Sporotal® 100ExcellentExcellent

Customize Your Look with Color

Get the look you want and the performance you need. With Radel PPSU opaque and transparent colors, it’s easy to set yourself apart from the competition.

Opaque Colors


Transparent Colors



Cases & Trays