why a buffer considered a good standard for the calibration pH meters?

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why a buffer considered a good standard for the calibration pH meters?

2006-08-30 04:24:05 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

3 answers

buffers are resistant to pH changes

2006-08-30 04:34:33 · answer #1 · answered by johnavaro 3 · 0⤊ 1⤋

You want a neutral pH as a reference point. If you use a base or acid, its pH may have been altered by aging, by condensation, by dilution, or by some other change.By using a neutral buffer, which resists pH changes, your calibration is more likely to be accurate.

2006-08-30 11:48:23 · answer #2 · answered by cdf-rom 7 · 0⤊ 1⤋

fisher sells them in 4.0, 7.0 and 10.0 pH. go with those and it will work well.

2006-08-30 13:26:33 · answer #3 · answered by shiara_blade 6 · 0⤊ 0⤋