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© Mast Group Ltd. 2026

Mast Group is a pioneer in AST, with over 65 years of experience developing trusted, high-quality susceptibility testing products. Built on a legacy of innovation, quality, and collaboration with the pharmaceutical industry, Mast remains committed to advancing AST solutions that meet evolving clinical and regulatory demands.

Today, Mast offers a comprehensive and expanding range of AST products, including MASTDISCS® AST, MASTRING-S® and ADATAB®. These manual testing solutions support susceptibility and MIC determination using disc diffusion and multipoint technology, in accordance with international standards such as Clinical and Laboratory Standards Institute (CLSI) and The European Committee on Antimicrobial Susceptibility Testing (EUCAST).

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AST

Antimicrobial Susceptibility Testing (AST) plays a vital role in guiding effective antimicrobial therapy and combating antimicrobial resistance. Accurate AST supports informed treatment decisions for bacterial and fungal infections and is essential in modern clinical microbiology.

AST ProductsCulture Media AMR ProductsIdentification & DetectionInstrumentsSample Storage
  • AST Test Discs.jpgAST Test Discs.jpg
    AST Products
    MASTDISCS® Antibiotic
    MASTDISCS® Antibiotic Susceptibility Test Discs are high-quality paper discs impregnated with specific antibiotics for the determination of susceptibility of common bacterial pathogens using disc diffusion testing methods.
    View MASTDISCS® Antibiotic products
  • UK_AST_Discs2.pngUK_AST_Discs2.png
    AST Products
    MASTDISCS® Antifungal
    MASTDISCS® Antifungal Susceptibility Test Discs are high-quality paper discs impregnated with specific antifungals for the determination of susceptibility of common fungal pathogens using disc diffusion testing methods
    View MASTDISCS® Antifungal products
  • ADATAB_MKT3.jpgADATAB_MKT3.jpg
    AST Products
    ADATAB®
    MAST® ADATAB® is a lyophilised tablet for the convenient preparation of antibiotic containing plates used for antibiotic susceptibility testing of clinical bacteria by breakpoint or MIC
    View ADATAB® products
  • AST Rings.jpgAST Rings.jpg
    AST Products
    MASTRING-S®
    MASTRING-S® is a specialised antibiotic susceptibility testing (AST) ring, developed by Mast Group, designed for rapid, simultaneous, and standardised susceptibility testing of 6 or 8 antibiotics in a single device.
    View MASTRING-S® products