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Refractometer Photos

Image of a series of numbers incrementally increasing from the bottom up.  The lower portion of the image is extremely bright making the numbers unreadable.
Refractometer 1: Example of low reading (meaning there’s not enough salt—too dilute).
This sample is at 5 on the scale.

Image of a series of numbers incrementally increasing from the bottom up.  The upper portion of this image is darker than the lower portion.
Refractometer 2: Example of a reading that’s in the box. This sample is at 11.5 on the scale.

Image of a series of numbers incrementally increasing from the bottom up.  The entire set of numbers is visible on this image.
Refractometer 3: This is an example of straight concentrate. Sample is very fuzzy.
Although there is some definite shading, there is no clear line. The whole scale is still visible.
(This is what the base personnel would have seen at the Fillmore accident, had they used the refractometer).

Image of a series of numbers incrementally increasing from the bottom up.  There is extreme contrast of light and dark.  The upper portion of the image is black while the lower portion is readable and lighter.
Refractometer 5: Example of a high reading. This sample is at 21 on the scale
(this means there ’s too much salt —too concentrated).



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