Table 3. Compatibility of Pluronic F-127 with various precipitants.

Injection properties were optically judged as good (+) or very good (++) depending on the stability and viscosity of the extruded stream (viscous enough to form and maintain a continuous stream not interrupted by droplets or inhomogeneities).

Compound	Type of precipitant	Final tested concentration	Injection
Ammonium sulfate	Salt	0.25 M	+
Sodium chloride	Salt	2 M	++
Polypropylene glycol 400	Polymer	25% (w/v)	+
Polyethylene glycol 400	Polymer	23% (w/v)	++
Polyethylene glycol 2000	Polymer	7% (w/v)	+