Primary Standard cells fit into the Medusa and Oberon, covering from Indium to Copper Points. These cylindrical cells are 42mm diameter and have a cavity 9mm diameter x 87mm deep. The Medium Temperature "Hockey Puck" cells are 64mm diameter and fit into the Gemini R. There are a range of High Temperature Cells for the Pegasus, 33mm diameter with a 10mm cavity.

Primary Standard Cells
Point	Part Number	Temperature	Apparatus
Indium	998-06-00A	156.60°C	Medusa R
Tin	998-06-00B	231.93°C	Medusa R
Zinc	998-06-00C	419.53°C	Medusa R
Aluminium	998-06-00D	660.32°C	Oberon R
Silver	998-06-00E	961.78°C	Oberon R
Copper	998-06-00G	1084.62°C	Oberon R
Medium Temperature "Hockey Puck" Cells
Gallium	431-03-00	29.7646°C	Gemini R
Indium	976-05-00A	156.60°C	Gemini R
Tin	976-05-00B	231.93°C	Gemini R
Zinc	976-05-00C	419.53°C	Gemini R
High Temperature Cells for the Pegasus R
Indium	970-06-00A	156.60°C	Pegasus R
Tin	970-06-00B	231.93°C	Pegasus R
Zinc	970-06-00C	419.53°C	Pegasus R
Aluminium	970-06-00D	660.32°C	Pegasus R
Silver	970-06-00E	961.78°C	Pegasus R