1. n. []

Jargon referring to the two gel-strength values for a mud. The 10-second and 10-minute "gels," often written as one number over the other. For example, 6/16 means 6 lb/100 ft² and is 10-second gel, and 16 lb/100 ft² is the 10-minute gel.

See related terms: gel strength,  shear-strength measurement test