Drawell DW-KDN-D Series Digital Display Program Temperature Control Digestion Furnace

Drawell DW-KDN-D Series Digital Display Program Temperature Control Digestion Furnace

Product overview

DW-KDN-D series digital display temperature control digestion furnace is designed for users who need to digest Kjeldahl nitrogen samples in batches, and can digest multiple samples at the same time. This device is simple, high digestion efficiency, ideal measurement results, easy to use and maintenance, is an ideal digestion device for users.

The Drawell DW-KDN-D Series Digital Display Program Temperature Control Digestion Furnace supports research, pharmaceutical, environmental, food, industrial, and quality-control laboratories. Scientific China provides model selection, configuration review, export coordination, and formal quotations.

Key features

• Infrared quartz tube heating – fast heating, acid/alkali resistant, and long service life.
• Digital temperature control for stable and easy operation.
• Uniform heating between positions for consistent sample digestion.
• 30-step programmable temperature/time control with step or linear heating modes.
• Stainless steel construction for corrosion resistance.
• PTFE sealing ring provides strong acid/alkali resistance and reliable sealing.
• Observation window allows real-time checking of sample digestion.
• Do not weigh excessive samples; add mixed perchloric and sulfuric acid. Pre-carbonize at low temperature before heating up, and add anti-bumping boiling stones to avoid rapid temperature rise.
• Sulfuric acid volatilizes at high temperature and organic matter decomposes violently. Equip waste gas absorption device, operate entirely in fume hood, and control staged heating rate.
• The digestion reaches the end when the liquid turns clear light blue-green. Incomplete digestion traps nitrogen inside carbon particles, leading to low titration results and invalid test data.
• Two-stage heating is standard: 150 °C for carbonization and foam removal, 380–420 °C for high-temperature digestion. Too low temperature slows digestion; excessive temperature evaporates sulfuric acid and causes nitrogen loss.
• Clean digestion tubes while hot after tests; regularly wipe furnace cavity with dilute alkali solution. Prevent long-term residual strong acid, and replace severely corroded tubes timely to avoid acid leakage damaging equipment.

Applications

• Quantitative or qualitative laboratory analysis
• Research, method development, and routine quality control
• Application-specific testing with suitable accessories and methods

Technical specifications

Ordering and configuration

Final specifications, included accessories, consumables, software, certifications, power requirements, installation, warranty, and regulatory availability depend on the selected model and destination. Contact Scientific China to confirm the suitable configuration, minimum order quantity, price, lead time, documentation, and international delivery terms before purchase.