methylene blue test

1. . []

A test to determine the amount of clay-like materials in a water-base drilling fluid based on the amount of methylene blue dye absorbed by the sample. Results are reported as "MBT" and also as "lbm/bbl, bentonite equivalent" when performed to API specifications.

Synonyms: bentonite equivalentMBT test

See: cation exchange capacityendpointion exchangekaolinitelow-yield claytitrationwater-based mud

Share