Nine Quintessa consultants visited the Low-Level Waste Repository (LLWR) in May 2025, taking up an important opportunity to ...

Quintessa provides a range of services related to the development and application of scientific software including general-purpose software products, in-house mathematical modelling, tools, custom ...

PITZER is a PHREEQC version of the Yucca Mountain EQ3/6 thermodynamic database that includes 'Pitzer data' to parameterise the activity coefficients of aqueous species.

This video covers section 8.2 of the User Guide.

Quintessa's resident competitive porridge maker has been at it again, this time at the 2020 edition of the World Porridge Making Championship. Simon Rookyard, who won the competition in 2015, was ...

Quintessa has recently provided an independent review of containment risks in the Endurance aquifer for CO₂ storage of the Northern Endurance Partnership (NEP)’s Carbon, Capture, Usage and Storage ...

Spirit Energy is maturing plans for the conversion of its Morecambe Bay gas hub into a net zero cluster of national scale and importance. To support those plans, Quintessa has conducted a preliminary ...

Quintessa has recently released updates for two of its free software tools, Graph Grabber and Portfolio Picker. Both new versions are available to download from the Quintessa website. The new version ...

Quintessa recently participated in the 7ᵗʰ workshop of the DECOVALEX project, hosted by the Korean Atomic Energy Research Institute (KAERI) in Busan, South Korea. The DECOVALEX project (DEvelopment of ...

This video covers sections 5.1 and 5.2 of the User Guide.

Quintessa has recently supported the Northern Endurance Partnership (NEP) through independent review of subsurface Early Risk Assessments for the expansion stores beyond Phase 1 at the Endurance store ...