Automatic Kjeldahl digester, SH520/SH508

Fully automatic digester designed to be reliable, intelligent and environmentally friendly; it completes the digestion stage of Kjeldahl analysis automatically. The SH508 and SH520 have 8 and 20 positions respectively, to match the laboratory's sample load. The unit runs on Android and works with a lifting device and a scrubber to automate the entire digestion process.

• Fully automatic operation: the digester controls the lifting device and the fume neutralisation unit simultaneously, with no separate operation, improving efficiency and reducing the risk of fume leakage
• Lifting function raises and lowers the tube rack automatically with the program, reducing labour and shortening cooling time
• Aluminium deep-well heating block improves heating and prevents bumping
• Ceramic and air-duct thermal insulation retains heat well and reduces energy consumption
• Real-time monitoring: the actual temperature is displayed live, and heating data and the digestion process are recorded for review
• Built-in 8 GB storage for unlimited experiment records; past digestion methods and heating curves can be retrieved at any time
• More than 20 pre-installed methods and storage for more than 500 custom methods, all simple to use
• Programmable heating rate with fuzzy PID control: the rate can be adjusted while the temperature stays accurately controlled
• Complies with 21 CFR Part 11, including an audit trail
• Two data transfer options, Wi-Fi and USB, for backup and review of historical data
• Housing with a high-grade anti-corrosion Teflon coating that withstands high temperatures and strong acids
• WD03 manifold: PFA sealing cover for a long service life
• Snap-on sealing cover, easy to replace
• Water-jet vacuum device that needs no power supply
• Drip tray limits damage from acid spills and corrosion
• S403 scrubber: cooling and chemical absorption recover the exhaust gas during neutralisation, improving recovery efficiency
• The scrubber can be controlled from the SH508/SH520 digester
• Corrosion-resistant PTFE tubing extends service life
• After digestion the tube rack lifts automatically for fast cooling; a separate, compact cooling stand brings samples quickly to room temperature
• Multiple protections: automatic alarm on overvoltage, overcurrent, overheating and faults