The approximate molecular size of the alginate is estimated by the intrinsic viscosity measurement as described in literature . The zero-shear viscosity µ of alginate solutions is measured as a function of concentration using a Discovery HR-3 rheometer from TA Instruments, giving an approximate molecular weight ∼145 kDa. We explore flow behavior over a range of different chemical compositions and flow rates. We both independently vary the calcium and alginate concentrations, and also fix the crosslinking ratio to vary the total concentration of gel. Table describes the experiments shown in Fig. and which are examined more closely in Section 3.3. Table lists the total flow rate (Q T ), alginate concentration (C Alg ), and calcium concentration (C Ca 2+ ) for the experiments analyzed.