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The biggest threat to the quality of your goods are exposure to the air, water and sunlight.

All our goods are supplied in air tight, amber containers with secure tapped necks. When you get your goods you should refrigerate them or freeze them for longer storage periods.

Always minimise the reagents exposure to the air and water.

Practically this means using the reagent as soon as it leaves the bottle,  not storing it in solution, not leaving the bottle tops off and taping the tops back on after use with electrical tape or something similar.

Your goods should not be exposed to sunlight so make sure they are stored out of direct light.

Having said that there is no need to operate at the speed of light when you are removing a sample from the container!
The reagent is relatively stable so you can calmly and carefully remove your sample without any quality degradation.