Standard PH4.01 / PH6.86 / PH9.18 Powder Pack
Specifications:
- pH Standard Values (at 25°C):
- pH 4.01 ± 0.02
- pH 6.86 ± 0.02
- pH 9.18 ± 0.02
- Accuracy:
- pH ±0.02 at 25°C (77°F)
- Composition:
- These buffer powders are prepared using high-purity chemicals and are specifically designed to maintain their pH values over time when properly stored.
- Packaging:
- Individual sachets containing the buffer powder for single-use.
- Each sachet typically contains powder to make 250 mL of buffer solution.
- Storage Instructions:
- Store the sachets in a dry, cool place away from direct sunlight.
- Do not use the powder after the expiration date to avoid inaccuracies in pH values.
- Once the solution is prepared, use it immediately for calibration, or store it in an airtight container for later use.
- Application:
- Suitable for calibrating pH meters for a wide range of environments including water treatment, food processing, research labs, and aquaculture.
- Preparation Instructions:
- Dissolve the powder content in 250 mL of distilled or deionized water.
- Stir or shake until the powder is completely dissolved.
- Ensure the solution is free of contaminants to maintain accuracy.
- Temperature Dependence:
- pH values are temperature-dependent. While the standard pH values listed above are valid at 25°C, they may slightly change at different temperatures.
- Calibration should always be performed at the same temperature as the sample measurement for accurate results.
- Shelf Life:
- Typically 2-3 years for the powder form, when stored properly.
- Once dissolved, the buffer solution should be used within a few days to maintain accuracy.
- Usage:
- These buffers can be used to calibrate pH electrodes, ensuring precise and accurate measurements across various applications.
- Color Indicators:
- The solution may contain color indicators (optional) to visually differentiate between pH levels:
- pH 4.01: Often reddish or pink
- pH 6.86: Usually green or yellow
- pH 9.18: Often blue or purple
- The solution may contain color indicators (optional) to visually differentiate between pH levels:
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