Bacteriological agar is extracted from several species of red algae, Gelidium spp. Bacteriological agar is a solidifying agent used in the preparation of microbiological culture media.This agar is suitable for all bacteriological purposes and has a low concentration of metal ions.A firm gel is obtained at working concentrations of 1.0 to 1.5%.
| Shelf Life (days) | |
|---|---|
| Storage Temp (°C) | |
| Dehydrated Medium Appearance | |
| Dehydrated Medium Colour | |
| Dehydrated PH |
| Organisms | Ref. No | Result |
| Typical Analysis | |
| Moisture | <10% |
| Ash | <5% |
| Geling point | 34.0 – 37.0°C |
| Melting point | >85°C |
| Calcium | <0.02% |
| Magnesium | ≤0.01% |
| Toxic Substances | Absent |
| Microbiological Analysis | |
| pH | 6.2 – 7.2 |
| Gel strength | >1000gms/m² |
| Transparency (NTU) | <5.0 |
| Total aerobic count | ≤10,000/g |
| Salmonella | Not detected/25g |
| Escherichia coli | Not detected/g |
