Water Proof Saturation Indicator Sticker for Sewer Manhole Filters

Hydrogen Sulfide Indicator

Item No. 148-0000
Hydrogen Sulfide BTIS SMF WP

The Hydrogen Sulfide Gas Saturation Indicator is qualitative (yes/no) colorimetric indicator for the end-of-service life of sewer manhole filters. It is designed to provide real-time indication of the breakthrough of hydrogen sulfide gas. The indicator is water proof and has extended shelf life of 2 years plus service life of 2 years.

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Product Specifications



0.4g (0.02oz)



2.8mm (0.11in),φ: 38.1mm (1.5in)


Operating temperature:

-20oC to 65oC (-4oF to 149oF)


Operating humidity:

5% RH to 95%RH


Minimum detectable limit:

1ppm•min at 30 cm/s face velocity


Color change:

light blue to brown to black


Storage temperature:

4oC to 25oC, (39oF to 77oF)


Shelf life:

2 years at 4oC to 25oC, (39oF to 77oF)


Service life:

2 years

Safety and Industrial Hygiene Products

Chemteq manufactures high quality and reliable devices to serve industrial hygiene and safety in the workplace. We are a world class manufacturer of wide variety of breakthrough and saturation indicators for activated carbon adsorbers and ductless hood filters. Our Indicators are available for;

  • Acidic vapors e.g. acetic, hydrochloric, hydrofluoric, hydrogen bromide, hydrogen chloride, hydrogen iodide, nitric, sulfur dioxide, trichloroacetic and trifloroacetic acids.
  • Aromatic diisocyanates vapors e.g. TDI and MDI.
  • Basic vapors e.g. ammonia and aliphatic amines.
  • Formaldehyde vapor, hydrogen sulfide gas and mercury vapors.

We also manufacture custom saturation (breakthrough) indicators for waste containers filters used in various applications such as hplc and dry cleaning. These indicators are available for; Acetonitrile, alcohols, aliphatic hydrocarbons, aromatic diisocyanates (TDI, MDI), aromatic hydrocarbons, chlorinated hydrocarbons, ethers, ethyl acetate, ketones, methyl acetate and tetrahydrofuran.

Chemteq manufactures surface wipes for the detection and quantification of trace amounts of chemical contaminants on surfaces. The ChemWipes and color comparators are available for aromatic diisocyanates and mercury.

Our custom and OEM indicators are validated for complete customer satisfaction. With our on-site fully equipped facilities, highly experienced chemists and engineering team, we are able to assist clients in research and development projects. Our comprehensive manufacturing capabilities allow us to produce your product to your specifications within your time frame. Quick turnaround for your prototypes is our specialty.

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