* This model also shows the different and individual layers of the stomach wall.
* The front half of the stomach is removable for detailed study.
* Removable duodenum and pancreas.
* Stomach delivered on stand.
* Examine Refractive index.
* Examine Mean dispersion of liquids, solids and powder.
* ND Range:ND 1.300 to ND 1.700 in step of 0.001; Accuracy:0.0002.