The use of zero point energy manipulation can fulfill many qualities that may be demanded of a stasis field, but in many cases it just doesn't cut it. Such cases include the containment of extremely volatile compounds and materials such as elements with extremely short half-lifes or even antimatter; in some cases, scientists wish to 'pause' a reaction of sorts in order to study it, in which case a true stasis field would be useful.
The most common implementation of a true stasis field capable of completely suspending and freezing all chemical and even quantum activity in an object is called a quantum stasis field. Quantum stasis fields work through an intricate application of the higgs field, forcing symmetry of the field onto an object. This causes the object to become essentially massless as all of its constituent atoms stop interacting with the higgs field, rendering them as quasi-photons. Then, much like how holographic technology works, a projector manipulates a variable magnetic field and uses magnetic vortices to lock each particle. This causes an interesting relativistic effect to be observed; the object, being pseudo-photonic particles locked by magnetism, still obeys the laws of general relativity and travel at the speed of light, but locked; essentially, each photon vibrates an incredible amount in one point of space, which causes time relative to the photonic object to become completely stopped. This causes the object to remain completely still in space relative to the projector, as the object experiences no time changes from the relativistic effects taking place. Therefore, because of this, the object is completely in stasis and cannot undergo any chemical or even physical changes until it is placed out of stasis.
The Apex MiniKnog has conducted numerous secret experiments using quantum stasis fields. One such experiment showed that a stasis field with enough energy could completely suspend in place a detonated nuclear payload.
Quantum stasis field projects are exotic and expensive pieces of technology, typically only produced by certain Civspace manufacturers of scientific instruments. They also use up a large amount of energy proportional to the volume of the field and the amount of mass that must be stored. Due to the energy requirements, and the bulky size of the projectors, it is nearly impossible to make them portable.