It is necessary for latex to remain stable upon storage and exposure to tight. Storage stability can be tested by examining the condition (i. e. has separation occurred?, is there sedimentation?, etc.) and determining the viscosity and pH with respect to time. A shelf life of six months is essential. Accelerated tests can be used by storing in ovens at, say, 40°C. It is important to correlate accelerated tests with normal storage tests. If the latex is to be used in the tropics, then it is essential that storage tests at elevated temperatures are conducted.
Latices should not destabilise by exposure to tight. It is possible to test this by leaving jars on the window cill of a south facing window.