The LabStrong Fi-Streem part number 857X20LS is the direct replacement of the Thermo Scientific Barnstead* Fi-Streem part number 857X20. The door assembly is a replacement part for Fi-Streem Water Purification Stills that produce eight liters of distilled water per hour and four liters of bi-distilled water per hour. *Barnstead is a registered trademark of Thermo Fisher Scientific.
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