Isotech has a wide range of Dry Blocks to suit probes requiring a large immersion depth. These products feature large and deep calibration volumes. As such they are less portable then the earlier Dry Blocks but have higher capacities and retain outstanding temperature uniformity, this uniformity is so good that these larger products are most suitable as apparatus for Secondary Laboratories to realize the Fixed Points of ITS-90.
For Comparison Calibration the Medusa should be used with an insert which is suspended from the top of the block so that the height is user adjustable. The Medusa is available in both the BASIC (B) and the SITE (S) models.
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