The phrase "almost all stages" is correct and usable in written English.
It can be used to indicate that a majority of stages in a process or sequence are included, but not necessarily every single one.
Example: "The project was successful at almost all stages, leading to a timely completion."
Alternatives: "nearly all phases" or "most stages".
They are over-represented at almost all stages of the criminal justice system.
Protein aggregation is arguably the most common and troubling manifestation of protein instability, encountered in almost all stages of protein drug development.
Charging in flames significantly affects the properties of the resultant particles produced because of its influence in almost all stages of particle formation.
Single estate distilleries, on the other hand, conduct almost all stages of production on site, including growing, fermenting, malting, distilling, maturing, bottling and labelling.
In the postgenomic era, computer-aided drug design (CADD) has considerably extended its range of applications, spanning almost all stages in the drug discovery pipeline, from target identification to lead discovery, from lead optimization to preclinical or clinical trials.
He was, he wrote, lucky at almost all stages of his life - lucky in finding his wife, Barbara, whom he married in 1940, and in having his four daughters.
These data cover almost all the stages of Arabidopsis pollen development: from uninucleate microspores, bicellular pollen, tricellular pollen, mature pollen grain, the 0.5 hr pollen tube, to 4 hr pollen tube.
It's shown by there being three men who set out to avenge their fathers' deaths (Hamlet himself, Laertes and the King of Norway's son Fortinbras), and, hence, by almost all the stage action consisting of one or other of them pursuing that objective, in contrasting ways.
Although the control capabilities of the robot covered almost all the stage devices, he noticed the absence of structural and functional modifications in the basic usage of his instruments.
Istanbul, Millennium Stadium, Old Trafford, Stamford Bridge - he has netted on almost all the big stages he has played on.
For surgery, only stage IV and unstaged patients were modelled, as almost all stage I III patients had resection.
