Viscometer/grain viscometer model:
| Model | LN | LN-II | 
| Difference | Have one gelatinization device | Have two gelatinization device | 
| Average viscidity (mm2/s) | Admissible error (mm2/s) | 
| less than 0.3 | less than 0.2 | 
| 3.1-6.0 | less than 0.5 | 
| 6.1-10.0 | less than 0.8 | 
| more than 10.1 | less than 1.0 | 
