NAGCO Carbon Dioxide (CO2) Detector Tubes 0.05-1% | N10-104-40

The NAGCO N10-104-40 Carbon Dioxide (CO2) Detector Tubes provide direct-reading measurement of carbon dioxide concentrations using a manual gas sampling pump. The standard measurement range is 0.05–1% CO2 using one 100 mL pump stroke with a sampling time of approximately 2 minutes.

For applications requiring measurements outside the standard range, the N10-104-40 can also measure 0.025–0.5% using two pump strokes or 0.1–2% using a half pump stroke with the appropriate correction factor.

Key Features

• Designed for carbon dioxide (CO2) measurement
• Standard measurement range: 0.05–1%
• Extended measurement ranges: 0.025–0.5% and 0.1–2%
• Direct-reading colorimetric detector tube
• Standard measurement uses one 100 mL pump stroke
• Approximately 2-minute sample time at standard range
• White to purple color change
• No electrical power required
• Designed for industrial hygiene, safety and field gas measurement applications

Specifications

• Manufacturer: NAGCO
• Part Number: N10-104-40
• Target Gas: Carbon Dioxide (CO2)
• Standard Range: 0.05–1%
• Extended Ranges: 0.025–0.5% / 0.1–2%
• Standard Pump Strokes: 1
• Standard Sample Volume: 100 mL
• Standard Sample Time: 2 minutes
• Standard Correction Factor: 1.0
• Precision: ≤ ±10% Relative Standard Deviation
• Linearity: r² = 0.994
• Humidity: No effect from 5–85% RH
• Temperature Range: 0–40°C (32–104°F)
• Color Change: White → Purple
• Storage Life: 3 years in darkness at 5–25°C (40–77°F); refrigeration preferred

Measurement Ranges

• 0.025–0.5%: 2 pump strokes / 200 mL / correction factor 0.5
• 0.05–1%: 1 pump stroke / 100 mL / correction factor 1.0
• 0.1–2%: 0.5 pump stroke / 50 mL / correction factor 2.3

Temperature Correction

• 0°C (32°F): Correction factor 1.2
• 10°C (50°F): Correction factor 1.1
• 21°C (70°F): Correction factor 1.0
• 40°C (104°F): Correction factor 0.75

Cross-Sensitivity & Interferences

NAGCO documents cross-sensitivity testing with carbon monoxide, sulfur dioxide, nitric oxide, ammonia, methane, hydrogen sulfide, hexane, isobutylene, benzene and toluene. Sulfur dioxide and hydrogen sulfide may produce apparent readings under the specified test conditions. Acid gases are listed as other possible interferences, and ammonia may interfere when present in mixtures. Refer to the NAGCO datasheet for complete cross-sensitivity information.

Pump Information

NAGCO recommends using NAGCO detector tubes with NAGCO sampling pumps. CPS Calibrations can assist customers transitioning from another detector tube system with selecting the appropriate NAGCO tube and sampling equipment for their application.

Important: Detector tube readings may be affected by temperature and interfering compounds. Always follow the NAGCO datasheet and pump operating instructions for the specific measurement being performed.

View NAGCO N10-104-40 Carbon Dioxide Detector Tube Datasheet (PDF)