Fig. 5

Influence of differently coloured polymer rings on scattered light measured in a commercial BioLector device. Polymer rings: (A) white polymer rings with glucose crystals (Fig. 2B) and (B) rings without glucose crystals sprayed with black lacquer (Fig. 2C), both with d_inner = 8 mm, Z_height = 3 mm, H_position = 0.0 mm, 1.5 mm, 3.5 and 5.5 mm. As a control, wells without polymer rings were evaluated. Experimental parameters: V_L = 0 mL, T = 37 °C, n = 1000 rpm, d₀ = 3vmm. Commercial BioLector settings: Gain 15, λ_{ex, em} = 620 nm, three replicates measured three times, position of the X-Y-positioning device (glass fibre) was varied on the X-axis (Fig. S3) with a positive offset of 0 to 6.5 mm relative to the standard position.