Porcelain, Mortars features a lip and a glazed inside and outside. pestles are dull glazed except the flat top surface & are oversized for hand comfort when grinding.

Deep Form, Made of superior naturally occurred Agate with surface hardness of 6.5 at moh’s scale and polished to make suitable for laboratory applications.

Made of 99.7% -pure aluminum oxide. Hardness greater than agate. Impervious to liquids under vacuum. Highly resistant to corrosion by chemicals. Hardness 83 on Rockwell 45N scale. Given minimum sample contamination.