write two precautions required while finding the ph of samples
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1. Keeping your hands and apparatus clean.
2. Using a new ph paper.
2. Using a new ph paper.
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Precautions:
1. Use only the standard colour chart supplied with the pH paper for assessing the ph value.
2. Keep the pH strips away from chemical fumes.
3. Either use fresh fine dropper or glass rod for each different sample, or wash the dropper or rod well with water every time.
Precautions:
1. Use only the standard colour chart supplied with the pH paper for assessing the ph value.
2. Keep the pH strips away from chemical fumes.
3. Either use fresh fine dropper or glass rod for each different sample, or wash the dropper or rod well with water every time.
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