Pharmacom's Nolt blend runs the full span of nandrolone esters: propionate and phenylpropionate at the fast end, decanoate and laurate at the slow one, laurate being the longest chain in regular use with this hormone.
All four are carried together at 300 mg per millilitre in a 10 ml multi-dose vial, and each unit is marked with a batch code for the manufacturer's own authenticity check. The point of a multi-ester product is a smoother release curve than any single chain produces on its own - the hormone freed is the same 19-nortestosterone in every case, only the rate at which the ester is cleaved differs.