Hydrogen Sulfide Technical Data Sheet

Technical Data Sheet: TDS 4 DIF 200 RTU - HYDROGEN SULPHIDE (H2S) This tube is designed for passively monitoring gaseous airborne Hydrogen sulphide. Description: Black acrylic tube fitted with black thermoplastic rubber caps. One cap is fitted with a one-micron porosity filter to prevent particulate ingress, the other cap contains the absorbent. Hydrogen sulphide is chemically adsorbed and transformed into a stable compound, which is then quantitatively determined by UV/ Visible Spectrophotometry with reference to a calibration curve derived from the analysis of standard sulphide solutions (ISO Accredited Methods). Suitable for carrying out spatial or localized assessments for H2S in ambient air or workplace monitoring. Tube Dimensions: 71.0mm length x 11.0mm internal diameter. Recommended Exposure Periods: 2 –4 weeks. Air Velocity: No influence when filter fitted. Storage: Store in a dark, cool environment preferably between 5-10 degrees centigrade. Shelf Life: 6-weeks from preparation date. Limit of detection: Less than 0.01 ugm-3 over a 4-week exposure period. Specific values available upon request. Analytical Expanded Measurement Uncertainty: available upon request. Relevant Standards: BS EN 13528 Parts 1-3 : 2002/3 Special Factors: Ozone may reduce the recovery of H 2S. Some reducing agents such as SO2 may inhibit color development. TDS 4:V1 March 2012