| Besiyerleri ve Katkıları | Merck Kod |
| 2,3,5-Triphenyltetrazolium Chloride | 1.08380 |
| Tamponlanmış Peptonlu Su | 1.07228 |
| TB Medium Base acc. to Löwenstein – Jensen | 1.05400 |
| TBX Agar ; Chromocult | 1.16122 |
| TCBS (Thiosulfate Citrate Bile Sucrose) Agar | 1.10263 |
| Tetrathionate Broth ; Muller – Kaufmann | 1.10863 |
| Tetrathionate Crystal-violet Enrichment Broth acc. to Preuss | 1.05173 |
| TGE Agar (Tryptone Glucose Extract Agar) | 1.10128 |
| Thayer – Martin Agar | 1.10128 |
| Thayer-Martin Supplement I (Mixture of Inhibitors) | 1.10729 |
| Thayer-Martin Supplement II (Mixture of Growth Factors) | 1.10730 |
| Thioglycollate (Fluid) Medium | 1.08191 |
| Thioglycollate Broth | 1.08190 |
| Thiosulfate Citrate Bile Sucrose (TCBS) Agar | 1.10263 |
| Trehalose for Microbiology | 1.08353 |
| Tributyrin (Glycerol Tributyrate) for Biochemistry (Suitable for Milk Bacteriology) | 1.01958 |
| Triple Sugar Iron (TSI) Agar | 1.03915 |
| Tryptic Soy (CASO) Agar | 1.05458 |
| Tryptic Soy (CASO) Broth | 1.05459 |
| Tryptic Soy (CASO) Broth, irradiated | 1.00800 |
| Tryptic Soy Agar (CASO) with Polysorbate 80 and Lecithin | 1.07324 |
| Tryptone (Peptone from Casein), pancreatic, free from sulfonamide antagonists | 1.02239 |
| Tryptone Glucose Extract Agar (TGE Agar) | 1.10128 |
| Tryptose | 1.10213 |
| Tryptose Agar | 1.10237 |
| Tryptose Sulfite Cyclocerine (TSC) Agar | 1.11972 |
| TSC (Tryptose Sulfite Cyclocerine) Agar | 1.11972 |
| TSI (Triple Sugar Iron) Agar | 1.03915 |
| TSN Agar (Perfringens Selective Agar acc. to MARSHALL) | 1.05264 |
| TTC (2,3,5-Triphenyltetrazolium Chloride) | 1.08380 |