Strip the ester off trenbolone and what remains is the bare hormone held in water rather than dissolved in oil. That is what Pharmacom Labs supplies here, at 50 mg/ml in a 10 ml vial.
A suspension behaves very differently from an esterified solution. With no chain to be cleaved, the compound becomes active almost at once and leaves the body just as quickly, which is why unesterified preparations belong to a different handling class than enanthate or acetate ones. Water-based suspensions also settle on standing, so the vial needs shaking before each draw.