Table 1 Gel evolution codes and gelation status based on the Sydansk method.

From: Crosslinking a nanocomposite by zirconium sulfate to synthesize a high-durable new-generation polymer gel

Code

Visual status while bottle inversion

A

No explicit change from the initial condition

B

Viscosity is higher than the initial.

C

Fluid reaches the datum while inversion.

D

A small portion of fluid does not reach the datum.

E

A small portion of fluid reaches the datum.

F

Flows to the datum more than halfway

G

Flows to the datum less than halfway

H

No flow; the gel is formed

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