Vacuum Hydrolysis Tube, 1 mL (Cat. No. 29570) has a dimension of 8 mm x 60 mm (https://assets.thermofisher.com/TFS-Assets/LSG/manuals/MAN0011742_Vacuum_Hydrolysis_Tube_UG.pdf). Looking at the "Choice of heating blocks" table on page 5 of the Reacti-Therm Sample Derivatization System brochure (https://assets.thermofisher.com/TFS-Assets/CMD/brochures/BR-21694-Reacti-Therm-BR21694-EN.pdf), the heating block that would be closest in diameter and depth for the Vacuum Hydrolysis Tube, 1 mL (Cat. No. 29570) would be Reacti-Block F (Cat. No. TS-18806).
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