Dehydrated Wort agar medium (GranuCult plus) based on the RAPP 1974 formulation, designed for cultivation of yeasts and molds in food and beverage microbiological testing. The medium’s composition and pH favour fungal growth while suppressing many bacteria, facilitating reliable enumeration and identification.
Wort agar, catalogue No. 105448, is a dehydrated granular culture medium supplied by MilliporeSigma / Merck and marketed under the GranuCult plus trademark. The formulation follows the classical RAPP (1974) wort agar recipe and is designed for the cultivation, isolation and enumeration of yeasts and molds in microbiological quality control of food and beverages. After preparation and autoclaving, the medium exhibits a slightly acidic pH that is favourable for fungal growth and reduces competing bacterial proliferation, supporting reliable microbial analysis.
Advantages
- GranuCult plus quality ensures consistent performance in microbiological testing.
- RAPP (1974) wort agar formulation supports robust growth of yeasts and molds.
- Suitable for routine food and beverage microbiology quality control workflows.
- Available in multiple packaging sizes to suit laboratory throughput requirements.
- Compatible with standard preparation procedures for culture media.
Technical specifications
| Product name | Wort agar |
| Catalogue number | 105448 |
| Brand / quality | GranuCult® plus |
| Form | Dehydrated granular medium |
| Formulation | RAPP (1974) wort agar |
| Typical use | Cultivation of yeasts and molds |
| Technique | Microbiological culture |
| Suitable for | Yeasts; molds |
| pH (prepared) | ~5.0 (after autoclaving) |
| Solubility | 55 g/L in water |
| Bulk density | ~520 kg/m³ |
| Packaging sizes | 500 g; 5 kg |
| Storage conditions | 15–25 °C, dry closed container |
| Brand | Merck |
| Pack size | 500 g |
