SpeedDigester K-425 / K-436 / K-439

The BUCHI SpeedDigester K-425, K-436 and K-439 are entry-level infrared digestion systems that use individually controlled heating chambers for rapid, homogeneous sample digestion. Continuous temperature adjustment and IR-based heating enable fast ramp-up while minimizing foaming of sensitive matrices. The series spans 6- and 12-position formats, from a purely manual configuration up to a fully programmable model with digital display, scrubber control and IQ/OQ qualification – so laboratories can match throughput and automation to their workload.

Key specifications:

• Maximum temperature: 580 °C

• Temperature range: 70 - 580 °C (K-425/K-436); 50 - 580 °C (K-439)

• Sample positions: 6 (K-425), 12 (K-436 and K-439)

• Individually controlled heating chambers for rapid, homogeneous heating

• Compatible sample tubes: 100 mL, 300 mL and 500 mL

• Sealed suction module for safe fume management

• Continuous H₂O₂ addition via capillary funnels

Available models:

• SpeedDigester K-425 – 6 positions, manual continuous temperature control, no display

• SpeedDigester K-436 – 12 positions, manual continuous temperature control, no display

• SpeedDigester K-439 – 12 positions, digital display, pre-programmable temperature programs, integrated scrubber control, IQ/OQ qualification capability

Applications:

• Kjeldahl nitrogen and protein determination

• Chemical Oxygen Demand (COD) analysis

• Aqua regia digestion and heavy metal analysis

• Phosphate and hydroxyproline determination

• Applications across food, feed, environmental, chemical and fertilizer industries