Antibiotic susceptibility discs (AST discs) from Liofilchem, distributed by Kormay across Canada, for standardized disc diffusion testing (Kirby-Bauer method) in clinical microbiology, veterinary diagnostics, and pharmaceutical quality control labs. Each disc delivers a fixed antimicrobial concentration onto inoculated agar to determine bacterial susceptibility or resistance.
- Single-antibiotic and combination discs across major antimicrobial classes (beta-lactams, aminoglycosides, tetracyclines, macrolides, glycopeptides, and more)
- Supplied in cartridges of 50 discs for use with standard disc dispensers
- Includes newer agents (e.g. cefiderocol, eravacycline, omadacycline) alongside established antibiotics
- Suited to CLSI/EUCAST-based susceptibility testing workflows
Search by antibiotic name or abbreviation below, or contact Kormay to build a custom AST panel for your lab's testing protocol.
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Liofilchem
Sisomycin SIS 30 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Roxithromycin RXT 15 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
Save $16.00


Liofilchem
Rifampicin RD 5 µg Antibiotic discs for susceptibility tests
Sale priceFrom $145.00 CAD
Regular price$161.00 CAD
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Liofilchem
Rifampicin RD 30 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD


Liofilchem
AST DISC Rifampicin RD 25 µg - Microbiology Testing Disc (lab use only)
Sale price$93.00 CAD
Save $36.00


Liofilchem
Quinupr-Dalfopristin QDA 15 µg Antibiotic discs for susceptibility tests
Sale priceFrom $328.00 CAD
Regular price$364.00 CAD
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Liofilchem
Polymyxin B PB 300 IU Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Polymyxin B PB 100 IU Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Piperacillin PRL 30 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Piperacillin PRL 100 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Pipemidic Acid PI 20 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Phenylboronic Acid BO Antibiotic discs for susceptibility tests
Sale priceFrom $145.00 CAD
Regular price$161.00 CAD
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Liofilchem
Phenoxymethylpenicillin PV 10 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Penicillin G P 2IU Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Penicillin G P 10 IU Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
Save $16.00


Liofilchem
Penicillin G 1 + Clavulanic Acid 5 PC 5 µg
Sale price$145.00 CAD
Regular price$161.00 CAD
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Liofilchem
Penicillin G 1 + Clavulanic Acid 20 PC 20 µg Antibiotic discs for
Sale price$145.00 CAD
Regular price$161.00 CAD
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Liofilchem
Penicillin G 1+ Clavulanic Acid 10 PC 10 µg
Sale price$145.00 CAD
Regular price$161.00 CAD
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Liofilchem
Pefloxacin PEF 5 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Pefloxacin 30 µg Antibiotic discs for susceptibility tests
Sale price$145.00 CAD
Regular price$161.00 CAD
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Liofilchem
Oxolinic Acid OA 2 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
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Liofilchem
Oxacillin OX 5 µg Antibiotic discs for susceptibility tests
Sale priceFrom $87.00 CAD
Regular price$97.00 CAD
