Buffer capsules with a pH of 9.2 are solid powder capsules or tablets used to create a standard buffer solution for calibrating pH meters. To prepare the solution, dissolve the contents of one capsule in 100 mL of distilled or CO2cap C cap O sub 2-free water, which will result in a pH of 9.2±0.059.2 plus or minus 0.059.2±0.05 at 20∘C20 raised to the composed with power cap C20. These capsules are stable, easy to store, and provide an accurate, predefined pH value for laboratory and industrial applications. Key details for buffer capsules pH 9.2 Purpose: Used to create a standard pH 9.29.29.2 buffer solution for calibrating pH meters. pH Value: 9.2±0.059.2 plus or minus 0.059.2±0.05 when dissolved according to the instructions. Preparation: Dissolve the powder from one capsule in 100 mL of distilled water to get the final solution. Physical Properties: State: Solid powder in a capsule or a white tablet. Odor: Odorless. Storage: Store at room temperature. They have a shelf life of about 12 months. Packaging: Available in plastic bottles or pouches, often containing 10 or 20 capsules/tablets. Safety: Handle with care. Use appropriate personal protective equipment (PPE) and avoid contact with skin and eyes. Common Uses: Laboratory experiments, quality control, and environmental testing.