mPrep™ ASP™ Automated Biological Specimen Preparation for EM Workflows

The programmable ASP-1000 and ASP-2000 Automated Specimen Processors provide “walk-away” preparation of specimens and grids for greater lab efficiency and productivity of electron microscopy workflows. Specimens are prepared in a fraction of the time, with any protocol, using mPrep specimen and grid capsules.


mPrep specimen and grid capsules also connect to hand-held lab pipettors for convenient processing in any lab.

Expands lab capabilities

  • Automated “walk away” rapid tissue processing
  • Automated immuno-gold labeling
  • Adaptable and flexible
  • Reproducible results

Solves common problems

  • System efficiency reduces tedium
  • Orient specimens in seconds
  • Protect samples from damage and contamination
  • Minimize human touches

Adapts to unique challenges

  • Prepare volume EM (serial block face SEM, FIB-SEM) specimens in a day, instead of a week
  • Automatic overnight on-grid and pre-embedding immunogold labeling
  • Consistently prepare pathogenic viruses in BSL3/4 biocontainment

The mPrep System

mPrep ASP-1000 & ASP-2000 Auto Specimen Processors

Walk-away TEM and vEM (serial block face SEM, FIB-SEM, array tomography) specimen preparation.


Walk-away pre-embedding and post-embedding immuno-labeling.


Virtually any protocol.


ASP-1000 & ASP-2000 Brochure


View Webinar: Walk-Away Biological Specimen Preparation for the 21st Century Lab

mPrep/s capsules

mPrep/s capsules entrap specimens for TEM, SEM, vEM, and other applications. Capsules hold specimens through fixation, en bloc staining, embedding, and even sectioning.


mPrep Workstation orients specimens in mPrep/s capsules – streamlines workflow from dissection to reagent processing.


Encapsulated specimens are protected from loss, misidentification and damage.

mPrep/g capsules

mPrep/g capsules hold TEM grids for immuno-labeling, on-grid processing, and storage. Protects grids from misidentification, loss, and damage.


Grids may require handling only twice: when inserted into capsules and when placed in the TEM. Grid-Tite™ slots keep grids safe even if an open capsule is dropped.


Reagent consumption is as little as 20 μl per grid.  You may never lose or damage a grid again.