Test suspension - can be in water. Shake, crystals could clog up small insulin pin, but you should be fine.
Test base (TNE-Test No Ester) - can be in oil. No need to shake, is not truly suspension as it is dissolved in the oil, could still use insulin pin to inject. Could potentially have greater impact on estrogen levels as there is no depot/crystals to break down, theoretically quicker acting than suspension.
I like to use either compound 1-1.5 hrs before activity for greater aggression. Suspension can be administered 50mg morning/night typically for strong quick gains.
Due to the volatility of these compounds, keeping a keen eye on estrogenic side effects is paramount.