What light path length do I need to use to measure the absorbance of the GOPOD Reagent as used in the Resistant Starch Assay Kit (K-RSTAR)?

The absorbance of 100 micrograms of glucose (0.1mL of standard at 1.0 mg/mL) incubated with 3 mL of GOPOD Reagent measured at 510 nm and with a light-path of 1 cm should be approximately 1.0 absorbance unit.

Product Page (K-RSTAR)