Dräger™ Short-Term Detector Tubes - Mercaptan

Catalog No.	Measurement Range
18-556G	20 to 100ppm

Catalog No. 18-556G Supplier Dräger™ Supplier No. 8101871

Description

These reliable, pre-calibrated detector tubes enable the rapid and precise measurement of Mercaptan gas concentrations in workplace environments and confined spaces.

The Dräger Mercaptan 20/a detector tube is designed for the rapid and precise measurement of mercaptan gas concentrations. The system uses glass tubes containing a chemical reagent that changes color in the presence of the target analyte, allowing for semi-quantitative concentration readings.

• Gas Measured: Mercaptan
• Standard Measurement Range: 20 to 100 ppm
• Number of Strokes (n): 10
• Measurement Duration: approx. 2.5 min
• Standard Deviation: ±10 to 15 %
• Color Change: White to yellow-brown
• Operating Temperature: 0°C to 50°C
• Operating Humidity: 3 to 30 mg H₂O/L
• Measurement Principle: 2 R-SH + Cu²⁺ → Cu(RS)² + 2 H⁺; Cu(RS)² + S → yellow-brown Cu-compound
• Compatibility: Used with Dräger Accuro™ bellows pump or automatic pumps like Accuro 2000 and Quantimeter 1000
• Cross-Sensitivity: Higher alkyl mercaptans (propyl- and butyl-mercaptan) are indicated with similar sensitivity. Measurement is not possible in the presence of hydrogen sulfide, as it is indicated with approximately double the sensitivity.

1. Extension of measuring range listed is possible for some detector tubes. Call Fisher Scientific™ at 1-800-772-6733 for more information.
2. Safety Equipment Institute (SEI) certified.

Specifications

• Components Measured: Mercaptan 20/a (Ethanethiol)
• For Use With (Equipment): Accuro Drager Gas Detector Pump
• Type: Gas Detection Tube
• Humidity Range: 3 to 30mg/L
• Measurement Range: 20 to 100ppm
• No. of Strokes: 10
• Quantity: 10
• Response Time: 2.5 min.
• Temperature Range (English): 32°F to 122°F
• Temperature Range (Metric): 0°C to 50°C