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ITL-M-17401 Fixed Point Cell. Primary Standard. Gallium 29.7646°C
ITL-M-17668 Fixed Point Cell. Primary Standard. Indium 156.5985°C
ITL-M-17669 Fixed Point Cell. Primary Standard. Tin 231.928°C
ITL-M-17670 Fixed Point Cell. Primary Standard. Lead (secondary) 327.462°C
ITL-M-17671 Fixed Point Cell. Primary Standard. Zinc 419.527°C
ITL-M-18204 Fixed Point Cell. Primary Standard. Antimony (secondary) 630.63°C
ITL-M-17672 Fixed Point Cell. Primary Standard. Aluminum 660.323°C
ITL-M-17673 Fixed Point Cell. Primary Standard. Silver 961.78°C
ITL-M-17674 Fixed Point Cell. Primary Standard. Copper 1084.62°C
Primary Laboratory Large Quartz Fixed Point Cells These cells meet all the requirements of science and
industry for Fixed Point Realizations of ITS-90. 99.99995% purity, ITS-90 Fixed Points, Sealed or Open Models

Fixed Point Cell. Primary Standard.

Model  Description 
ITL-M-1XXXX  Fixed Point Cell. Primary Standard.

The cells now offered have been increased in purity and length to conform to the requirements of optimal
realizations except that we have sealed in 1 atmosphere of 6N pure argon at the freeze temperature for you.

Sealed optimal realizations of ITS-90 are made from metal exceeding 6N5 purity and have a useable depth
below the metal surface of more than 200mm. They come complete with Inconel basket, a carry case and the
necessary heat shunts and reflectors to enable them to fit into our apparatus.

Diameter  Typically 50mm 
Length (sealed cell)  Typically 275mm excluding sealing tip 
Length (open cell)  Indium, Tin, Lead, Zinc: 520mm to underneath of flange Antimony,
Aluminum, Silver, Copper: 610mm to underneath of flange 

Thermometer Immersion  Below metal surface 200mm Clients often confuse the immersion in
the cell with the total immersion over which length the temperature
gradient should be less then 1°C if the apparatus is operated
roperly. 

Weight  5.5 lbs (2.5kg) or less, depending on metal 
Note: All Cells are intended for use in, and are dimensionally compatible, with the appropriate furnaces.