# Controlled Testing with B&W Film Hydrogen Sulfide Detectors

by jschaffr | 21 Nov 19:45 |

Above infographic describes procedure for controlled testing of Hydrogen Sulfide Detectors created using this method

Sensors were created from Ilford Multigrade IV RC Deluxe MGD.1M B&W Paper which was treated minimally with glycerine ($1),Kodak Photoflo 200 (16oz$8), and water (value not quantified).

Test environment is kept at room temperature (70 degrees +/-5) in my apartment in Providence, Rhode Island.

Results to be posted in following weeks.

Hey James - want to use the electronic hydrogen sulfide detector for this test also? It would be good to have a secondary means of measuring, as in the setup you describe, even if strips do darken, there's no way to confirm that it's because of H2S. Though the electronic one is also not calibrated for heat/moisture. We have been meaning to order a heat/moisture sensor to control for those variables.

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