Cosmos Bead Co.
Cosmos Bead JIS B-7983 4Units All That Gas Analyzer
Manufacturer: Cosmos Bead
Model:JIS B-7983
Features
- Includes four glass absorption pipettes, a 100 mL gas buret, a level bottle, a calcium tube, and a branch tube.
- Used for analyzing CO, CO₂, O₂, H₂, and CH₄.
| code | Product name |
| 1301-01 | Complete set in wooden box |
◆Absorbents (Reagents)
| Gas | Absorbent | Preparation Method |
| Carbon Dioxide (CO₂) | Potassium hydroxide aqueous solution | Common potassium hydroxide, 30% aqueous solution |
| Oxygen (O₂) | Alkaline pyrogallol solution | 32% pyrogallol aqueous solution + 50% KOH aqueous solution (equal-volume mixture) |
| Alkaline sodium dithionite solution | Dissolve 50 g sodium dithionite in 250 mL water, then add 40 mL KOH solution (50 g KOH dissolved in 700 mL water). | |
| Yellow phosphorus | Yellow phosphorus sticks | |
| Carbon Monoxide (CO) | Ammoniacal cuprous chloride solution | Dissolve 200 g CuCl₂·2H₂O and 250 g NH₄Cl in 750 mL water, add NH₄OH equal to about one-third of the total volume, and add metallic copper for storage stabilization. |
| Hydrogen (H₂) | Colloidal palladium solution | Neutralize 22 mL of 1 N NaOH with a palladium chloride solution, then add 5 g of picric acid. |
