Leica CM1850 Cryostat – Error E027. Lab Equipment Repair October 31, 2019 admin Blog, videos Leica is no longer servicing the CM 1850, but we are! Learn more here. Related Posts What to do when your tissue Tek 5 display isn’t working. Thermo Shandon Excelsior Lid Stuck Closed – Tissue Processor – Lab Equipment Repair How to repair a Tissue Processor Strainer. More useful histology equipment repair tips!