Silver Tarnish H2S Test Papers

SKU: 33810-PbAc

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Detect hydrogen sulfide before silver tarnishes. Indigo® Lead acetate test paper provides a fast, visible warning of H2S in display cases, vaults, and conservation storage environments.

Silver, copper, and bronze artifacts tarnish when trace hydrogen sulfide gas reacts with their surfaces. In museum display cases, vaults, or archival boxes, even < 5 ppm H?S can cause visible darkening within weeks. Indigo® lead acetate test paper provides an immediate and inexpensive means of detecting off-gassing or poor ventilation before irreversible corrosion occurs.

Details Specs Docs Reviews
Details

Best Practices

Best Practice Benefit
Expose strips in display cases or storage boxes for 24–72 hours Detects trace H2S before tarnish appears
Record date and exposure conditions on each strip Supports long-term environmental monitoring
Store unused strips in airtight container Prevents premature darkening from ambient sulfur
Photograph results for digital records Facilitates audit and comparison across exhibits

 

Discipline Learning Outcome
Chemistry Understand Pb²? reaction with sulfide ions forming insoluble PbS
Conservation Science Recognize sulfur compound sources and preventive monitoring methods
Environmental Science Evaluate gaseous pollutant effects on cultural heritage materials

This paper on how to use lead acetate paper to test for sulfur in materials lists some procedures. Some of the tools mentioned are listed in Related Products below.

Related information or images
Sour Water Detection

Sour Gas Detection

Hydrogen Sulfide Gas Detection

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Lead Acetate Hydrogen Sulfide Test Paper

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Livestock/Agriculture

Sulfur Gas Detection in Museum Archives

Museum Archived Material

Book Display Case Conservation

Paper/Leather Conservation

Specifications
  • The number of strips (100) per bag is approximate.
  • Shelf life is 3 years but if bag is properly sealed, they should be good for a minimum of 5 years or more.
Documentation

Test Strip Documentation
Stability Statement Certificate of Analysis SDS
Indigo Lead acetate test strips Stability Statement Indigo Lead acetate test strips Certificate of Analysis Indigo Lead acetate test strips SDS
Reviews (2)
2020-12-02
Exactly what I ordered.
— Randy
2017-01-16

The test strips from Indigo are top notch. They are always competitively priced and shipped on time. The best part of dealing with Indigo is that they stay on top of their products. We had a bad batch of strips arrive in the past but before we could figure it out the hard way, Indigo had identified the issue and had a replacement order already in the mail to us. Pretty hard to beat that kind of customer service.

— Mike Shields
— Indigo:

Thanks for the kind words & great review. We knew how important these strips were to your business & we happy to nip it in the bud!

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