Use and variations of test tubes in chemical plants

Thread Content

Test tube name, range, sampling volume, color change indication: Hydrogen sulfide (high) (50–1500) mg/m3 – 1 dose, 50 ml; color changes from white to brown. Hydrogen sulfide (medium) (10–200) mg/m3 – 1 dose, 100 ml; color changes from white to brown. Hydrogen sulfide (low) (2–60) mg/m3 – 2 doses, 200 ml each; color changes from white to brown. Hydrogen sulfide (D) (1–10) mg/m3 – 4 doses, 400 ml each; color changes from white to brown. Ammonia (high) (100–1500) mg/m3 – 1 dose, 50 ml; color changes from orange-yellow to blue. Ammonia (medium) (10–300) mg/m3 – 1 dose, 50 ml; color changes from orange-yellow to blue. Ammonia (low) (5–100) mg/m3 – 1 dose, 100 ml; color changes from orange-yellow to blue. Ammonia (1–20) mg/m3 – 1 dose, 100 ml; color changes from orange-yellow to blue. Carbon monoxide (low) (20–250) mg/m3 – 1 dose, 100 ml; color changes from white to brown. Sulfur dioxide (high) (200–2000) mg/m3 – 1 dose, 50 ml; color changes from blue to yellow. Sulfur dioxide (low) (15–300) mg/m3 – 1 dose, 100 ml; color changes from blue to yellow. Methanol (20–2000) mg/m3 – 5 doses, 500 ml each; color changes from light yellow to green