Why don’t you use the smaller aperture size as standard? Is a difference in terms of measurement?

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Why don’t you use the smaller aperture size as standard? Is a difference in terms of measurement?

In general, we would recommend that you always use the largest aperture size that you is possible for your specific application. This ensures the highest degree of measurement repeatabiity because a larger sample size is being collected by the instrument. This is true for any spectrophotometer and larger apertures are particularly helpful when their is color variation withing the sample being measured. If you were measuring a perfectly uniform color sample, the aperture would make zero difference on the measured result.

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