M/K ASME & CE Certified Laboratory Pulp Digesters

Precise, safe, and easy to use. Cook by H-Factor or Temp/Time segments

Both vessel and software

Increase your pulp yeild

M/K Systems Inc. offers the most precise laboratory pulp digesters available.  Run precision cooks in one or both vessels at a time.  Rapidly circulating liquor through our unique mixing module to obtain the best liquor/wood interactions.    Cook your systems through traditional temperature/time segments or H-factor.  Obtain low variation in your KAPPA numbers.  Each patented vessel has a patented liquor mixing module, an anti-turbulent tubing design, and high-speed pumps give you the best liquor/chip interaction available.   We have options that allow you to easily and safely inject additives during your cookRent or purchase our high-pressure pulp digesters for all of your cooking needs.  The digester is easy to use, safe, and reliable.  Use our systems for kraft cooks, sulfite cooks, bleaching, cooking with additives, etc.  Give us a call to try our system.  

KAPPA graph
GA Tech Digester
M/K Digester with options
Cooked chips
M/K Chip can with cooked chips
Digester profile

Details and industry references of Our Patented technology


Temperature control is +/ 0.1°C, and both liquor and vapor temperatures are recorded.  Our rapid cooling technology cools quickly enough so that operators can run several cooking cycles per day.  Our liquor transfer design allows you to optionally use one vessel as a boiler and transfer over all fluids to the other vessel.  All aspects are easy to use and reliable.  

Some of our industry references include:

1.   Shell Oil, US patent 9,527,788, "Methods for hydrothermal digestion of cellulosic biomass solids in the presence of a distributed slurry catalyst".

2. (United States),“Composition for the production of Improved Pulp”, Patent # US 6,890,404.
3. (United States),“Phenols as Additives in Kraft Pulping”, Patent Application Publication US 2019/0112757.
4. (United States), “Controlled Flocculation of Lignocellulosic Hydrolyzates”, Publication US 2016/0083808
5. (Canada), “Method for obtaining cellulose from biomass comprising lignocellulose”, Canadian #
6. (Australia), Liquid co-extraction process for production of sucrose, xylo-oligosaccharides and
xylose from feedstock, Australian Pat. App. AU 2015252695 B2, World Wide Application # 2015/164948 Al.
7. (United States), “Tobacco-derived cellulose material and products formed thereof”, Patent # US
8. (United States), “Method to separate lignin-rich solid phase from acidic biomass suspension at an
acidic pH”, Patent # US 9,751,781.
9. (International Application),”Composition for inhibiting calcium salt scale formation”, Patent Application
AU 2,010,224,861.
10. (Portugal), “Method and aqueous composition for the production of improved pulp”, Patent # PT
11. (United States), Publication: “Comparison of Oxidative Alkaline Extraction Reaction's Impact on Pulp
Properties and the Environment”. T.M. Runge and A.R. Ragauskas, Int’llPulp Bleaching Conference.
Helsinki, Finland

12. (United States), Publication: "Peter Hart, Daniell Connell, “The effect of digester kappa number on the bleachability and yield of EMCCTM softwood pulp", Westrock Company. 

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Some of the typical cooking materials include:

  • All Soft Woods & Hard Woods

  • Bamboo

  • Bagasse

  • Bio-based materials

Contact Us

Get in touch with us today for more details! Our personnel will be glad to answer your inquiries.