Sample Rotator Accessory Measures Yellowness Index

A new quality-control accessory for benchtop spectrophotometers is an automatic sample rotator designed for easy, repeatable measurements of yellowness index in transparent resin pellets.

A new quality-control accessory for benchtop spectrophotometers is an automatic sample rotator designed for easy, repeatable measurements of yellowness index in transparent resin pellets. It eliminates the need for an operator to refill a glass sample cup several times, which is time-consuming and leads to measurement variability. The new sample rotator from Byk-Gardner, Columbia, Md., mounts on top of the company’s Color-View 45/0° instrument. It is powered by the instrument.