| http://www.w3.org/ns/prov#value | - Other brackets, fixtures or articles may be employed to secure or position either sample holders 5, light detectors 50 and or samples 30 requiring only that the device or method used retain the sample 30 in position relative to the light source 120 and light detector 50 during the period of measurement; fixing methods including welds, bolts, screws, glue, sheet metal forming and other methods may
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