Conflicting Sources

https://ucanr.edu/datastoreFiles/608-87.pdf

The pylorus contracts to slow gastric emptying and results in further mixing of gastric contents. During this time, the stomach transforms its contents into multiphase slurry called chyme, which is a combination of separate phases of aqueous solutions, fats, and solids. The more intense peristaltic waves promote antral empty- ing, which allows gastric contents, mainly fluid mixed with small particles, to pass through the pylorus and enter the duodenum. The particle size of the food emptied through the pylorus is less than 1 to 2 mm during the fed state (Thomas 2006).

and the Thomas Citation:

Thomas A. 2006. Gut motility, sphincters and reflex control. Anaesthesia Intens Care Med 7(2):57–8.

I think yours is the typo.