Sulfur Dioxide (SO2) Detector Tubes | Standard Range: 2-30ppm | N10-107-15

NAGCO Sulfur Dioxide (SO₂) detector tubes are designed for measuring sulfur dioxide concentrations using NAGCO pumps and tubes. The tubes provide three measurement ranges for flexibility across different SO₂ concentrations.

Specifications:

• Standard Range: 2–30 ppmv
• Extended Range: 1–15 ppmv
• Extended Range: 4–60 ppmv
• Number of Pump Strokes (Standard Range): 2
• Sample Volume (Standard Range): 200 mL
• Sample Time (Standard Range): 2 × 2 minutes
• Correction Factor (Standard Range): 1
• Precision (Relative Standard Deviation): ≤ ±12%
• Linearity with Number of Pump Strokes: r² = 0.991
• Humidity: No effect between 5–90% RH
• Temperature Range: 0–40°C (32–104°F)
• Temperature Correction Factor: 1.1 at 0°C/32°F; 1.1 at 10°C/50°F; 1.0 at 24°C/75°F; 1.1 at 40°C/104°F
• Storage Life: 2 years in darkness at 5–25°C (40–77°F); refrigeration preferred
• Color Change: Blue → Yellow
• Part Number: N10-107-15

The tube uses a reaction between sulfur dioxide and sodium hydroxide, producing a pH indicator color change from blue to yellow. The standard range uses 2 pump strokes with a 200 mL sample volume and a 2 × 2-minute sampling time.

Cross-Sensitivity: The datasheet reports no apparent response from carbon monoxide, carbon dioxide, nitric oxide, phosphine, methane, hexane, or toluene under the listed test conditions. Ammonia and hydrogen sulfide may produce apparent readings and can reduce the reading in mixtures. Hydrogen fluoride may also produce a small apparent reading.

Important: Other possible interferences include acid gases.

Datasheet