Single Sulfur Dioxide Test Tube

On-The-Spot Sulfur Detector Tubes. - Flat-out the best way to test ACCURATELY for sulfurIf you want to eradicate the Rotten-Egg smell, you had better test for it accurately, this is the test you need! Used to obtain a time weighted average of parts per million (PPM) concentrationEasy to use and precise (not like the innacurate Alka-Seltzer test)All dosimeter tubes exceed NIOSH and OSHA performance criteria for TWA detector tubesExtremely accurate test for Sulfur DioxideMeasures from 1.0 PPM to 100 PPMOne test per tubeSulfur dioxide reacts with barium chloride to produce hydrogen chloride to discolor the pH indicator to yellowSulfide Ion 1.0-100ppm Directions for useBreak ends off of tubePlace in fresh glass of waterWait 3 minutes for results