70 mL PTFE Digestion Tube, 33 × 110 mm (CAT#: STEM-BC-3696-ZJF)

The 70 mL PTFE digestion tube is designed for chemical digestion before instrumental analysis. It is suitable for sample preparation in gas chromatography, liquid chromatography, plasma spectroscopy, mass spectrometry, and atomic absorption workflows. Typical samples include soil, blood, urine, nails, food, dairy products, agricultural products, feed, heavy metals, and ores. The PTFE construction resists strong acids, strong alkalis, aqua regia, and various organic solvents. It remains stable in high-temperature and chemically aggressive digestion environments. The tube withstands temperatures up to 250°C for short periods and up to 210°C during prolonged use. Its smooth non-stick inner wall reduces liquid retention and simplifies cleaning. Low permeability and good wear resistance help reduce leakage, contamination, and replacement frequency.

Capacity: 70 mL
Material: PTFE
Compatible acid evaporators: LC-GAD-12, LC-GAD-24, and LC-GAD-48
Tube outer diameter: 33 mm
Tube inner diameter: 29 mm
External height with lid: 113 mm
External height without lid: 110 mm
Internal height: 106 mm
Short-term temperature resistance: Up to 250°C
Long-term temperature resistance: Up to 210°C
Low-temperature resistance: Down to -180°C
Net weight: 69 g
Product dimensions: 33 mm diameter × 110 mm

Strong acid and alkali resistance
Aqua-regia compatibility
Short-term 250°C resistance
Smooth non-stick interior
Low sample permeability
Easy cleaning
Reusable wear-resistant construction
Compatible with multiple GAD evaporators

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