NAGCO Hydrogen Sulfide (H2S) Detector Tubes 0.5-10 ppm | N-10-103-03

The NAGCO N-10-103-03 Hydrogen Sulfide (H2S) Detector Tubes provide direct-reading measurement of hydrogen sulfide using a manual gas sampling pump. The measurement range is 0.5–10 ppm H2S using five pump strokes and a total sample volume of 500 mL.

This tube is specifically designed for the 0.5–10 ppm range. NAGCO specifies Do Not Extend beyond the stated measurement range. The tube must also be used at less than 5% relative humidity, as readings drop sharply above 5% RH.

Key Features

• Designed for hydrogen sulfide (H2S) measurement
• Measurement range: 0.5–10 ppm
• Direct-reading colorimetric detector tube
• 5 pump strokes / 500 mL sample volume
• Sample time: 1.5 minutes
• Precision: ≤ ±12% Relative Standard Deviation
• Must be used below 5% RH
• No temperature effect from 0–40°C (32–104°F)
• Pale white to brown color change
• 2-year storage life under specified refrigerated conditions
• No electrical power required

Specifications

• Manufacturer: NAGCO
• Part Number: N-10-103-03
• Target Gas: Hydrogen Sulfide (H2S)
• Measurement Range: 0.5–10 ppm
• Extended Range: Do Not Extend
• Pump Strokes: 5
• Sample Volume: 500 mL
• Sample Time: 1.5 minutes
• Correction Factor: 1.0
• Precision: ≤ ±12% Relative Standard Deviation
• Linearity: r² = 0.999
• Humidity: Must be used below 5% RH; readings drop sharply above 5% RH
• Temperature Range: 0–40°C (32–104°F); no temperature effect within this range
• Color Change: Pale White → Brown
• Storage Life: 2 years in darkness below 10°C (50°F); refrigeration preferred

Measurement Range

• 0.5–10 ppm: 5 pump strokes / 500 mL / 1.5 minute sample time / correction factor 1.0
• Extended Measurement: Do Not Extend

Humidity Requirement

This detector tube must be used at less than 5% relative humidity. NAGCO states that the indicated reading drops sharply above 5% RH. Verify application humidity before using this tube for H2S measurements.

Cross-Sensitivity & Interferences

NAGCO documents cross-sensitivity testing with hydrogen, carbon monoxide, methane, ammonia, nitrogen dioxide, sulfur dioxide, carbon disulfide, methyl mercaptan, diethyl sulfide, hexane, isobutylene and toluene. Under the specified individual test conditions, these substances produced no apparent H2S reading. However, NAGCO notes that nitrogen dioxide can interfere in mixtures and may produce a transient light-brown H2S response. High sulfur dioxide concentrations can also interfere in mixtures and suppress the H2S response. Refer to the NAGCO datasheet for complete test concentrations and interference 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: Do not extend measurement beyond the specified 0.5–10 ppm range. This tube must be used below 5% RH. Always follow the NAGCO datasheet and pump operating instructions for the measurement being performed.

View NAGCO N-10-103-03 Hydrogen Sulfide Detector Tube Datasheet (PDF)