NAGCO Hydrogen Sulfide (H2S) Detector Tubes 0.2-3 ppm | N10-103-04

The NAGCO N10-103-04 Hydrogen Sulfide (H2S) Detector Tubes provide direct-reading measurement of low concentrations of hydrogen sulfide using a manual gas sampling pump. The standard measurement range is 0.2–3 ppm H2S using one 100 mL pump stroke with a sample time of approximately 1.5 minutes.

For applications requiring measurements outside the standard range, the N10-103-04 can also measure 0.1–1.5 ppm using two pump strokes or 0.4–6 ppm using a half pump stroke with the appropriate correction factor.

Key Features

• Designed for low-level hydrogen sulfide (H2S) measurement
• Standard measurement range: 0.2–3 ppm
• Extended measurement ranges: 0.1–1.5 ppm and 0.4–6 ppm
• Direct-reading colorimetric detector tube
• Standard measurement uses 1 pump stroke / 100 mL sample volume
• Approximately 1.5-minute sample time at standard range
• Pale orange to pink color change
• Precision of ≤ ±12% Relative Standard Deviation
• No stated temperature effect from 0–40°C (32–104°F)
• No electrical power required

Specifications

• Manufacturer: NAGCO
• Part Number: N10-103-04
• Target Gas: Hydrogen Sulfide (H2S)
• Standard Range: 0.2–3 ppm
• Extended Ranges: 0.1–1.5 ppm / 0.4–6 ppm
• Standard Pump Strokes: 1
• Standard Sample Volume: 100 mL
• Standard Sample Time: 1.5 minutes
• Standard Correction Factor: 1.0
• Precision: ≤ ±12% Relative Standard Deviation
• Linearity: r² = 0.999
• Humidity: Must be used at less than 5% RH
• Temperature Range: No effect from 0–40°C (32–104°F)
• Color Change: Pale Orange → Pink
• Storage Life: 1 year in darkness at 5–25°C (40–77°F); refrigeration preferred

Measurement Ranges

• 0.1–1.5 ppm: 2 pump strokes / 200 mL / 2 × 1.5 minute sample time / correction factor 0.5
• 0.2–3 ppm: 1 pump stroke / 100 mL / 1.5 minute sample time / correction factor 1.0
• 0.4–6 ppm: 0.5 pump stroke / 50 mL / 1 minute sample time / correction factor 2.0

Humidity Requirement

Important: NAGCO specifies that the N10-103-04 tubes must be used at less than 5% relative humidity (RH). The reading drops sharply above 5% RH. This humidity limitation should be considered when determining whether this tube is appropriate for the intended application.

Cross-Sensitivity & Interferences

NAGCO documents measurable apparent readings from methyl mercaptan and butyl mercaptan. Under the listed test conditions, ammonia, nitrogen dioxide, sulfur dioxide, carbon disulfide, carbon monoxide, hexane and toluene showed no apparent reading. Isobutylene may reduce the response when mixed with H2S. HCl and other acids and bases are listed as other possible interferences. Refer to the NAGCO datasheet for complete cross-sensitivity information and test conditions.

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: Always follow the NAGCO datasheet and pump operating instructions for the specific measurement being performed. Pay particular attention to the less-than-5% RH requirement for this tube.

View NAGCO N10-103-04 Hydrogen Sulfide Detector Tube Datasheet (PDF)