Division 6 Chemical and microbiological purity specifications:
United Kingdom
| Loss on drying | Less than 10 % |
|---|---|
| Heavy metals | Less than 30 ppm |
| Pb | Less than 10 ppm |
| As | Less than 2 ppm |
| Total coliforms | Absent |
| Salmonella spp | Absent in 25 g sample |
| Aerobic count | Less than 5 × 104 cells/g |
Urease used in the treatment of wine must be prepared under similar conditions to those for urease as covered by the ‘Opinion on the use of urease prepared from Lactobacillus fermentum in wine production’ of the Scientific Committee for Food of 10 December 1998.