Colorful Test Tubes Vector QR Code for Stickers

About this design

A bundle of seven glass test tubes with white rims, filled with purple, orange, pink, blue, yellow and green liquid. The tube caps and rims hide the finder squares, while the dark blobs and blocks floating inside the liquids carry the modules. Strong dark red, navy and green marks against the bright, light-filled fluids keep the pattern distinct. Small bubbles and glossy highlights add depth without crowding the data pattern.