Kitagawa Hydrogen Sulfide Gas Generator Tube (H2S). Each Kitagawa Detector Tube is formulated with high purity reagents that absorb and react with the target gas or vapor being measured. A colorimetric stain is created that is proportional in length to the concentration. For most tubes, the concentration is read directly off the measurement scale on each tube.

Features Include:
Calibrated for a Single Pump Stroke
300 Models Available; from Acetaldehyde to Xylene, from ppb to percent
Manufactured with Ultra-High Purity Reagents
Narrow Diameter Tube Assures Sharp Endpoints (no oblique demarcation lines)
Tubes Wrapped in a Thin Film that Guards Against Shattering and Dispersing of Reagent in case of Accidental Breakage
Accuracy Between +/- 5% and +/- 15% Depending on the Tube

For many gases and vapors, there are several concentration ranges available giving you the flexibility to measure both low and high concentrations without sacrificing precision.