Advanced Essentia Tubes are a category of item and a research option under the Alchemy tab. It is available for purchase using experience after researching Essentia Tubes. Advanced Essentia Tubes allow for an extra level of complexity to be added to the Essentia filtering system, allowing for more efficiency and less work in the long run. However, not all the things unlocked by this research can be used on there own. For example, the Alchemical Construct is a block and crafting component.
There are 4 different types of Advanced Essentia "Tubes", if one includes the Essentia Buffer as a tube, along with the Alchemical Construct.
Filtered Essentia Tube
The Filtered Essentia Tube can be set to filter only a specific type of Essentia through it using a marked Label or Phial of Essentia. By doing this, one can ensure that other Essentia Tubes ahead have no conflict in what type of Essentia is moving through them, or easily fill multiple Warded Jars with a single type of Essentia without labeling all of them. One can shift click on the Tube to remove the filter, and otherwise it will act like any other Essentia Tube. It has no effect on suction. They can be created in an Arcane Workbench with an Essentia Tube and Essentia Filter, along with 10 Ordo and 5 Aqua Vis.
Restricted Essentia Tube
The Restricted Essentia Tube cuts the suction ahead of it in half, allowing for more complex systems of directing Essentia. They can be created at an Arcane Workbench with an Essentia Tube and piece of stone, along with 10 Terra and 5 Aqua Vis.
Directional Essentia Tube
The Directional Essentia Tube only allows suction from from the way the mark on the Tube is facing. This allows for more complex Essentia filtering systems by allowing a way for Essentia to enter a section of the system without allowing any outside influences to it from its origin, nor allowing that Essentia back from that direction after it has passed in. They can be created in an Arcane Workbench with an Essentia Tube and a piece of lapis lazuli, along with 5 Aqua and 10 Ordo and Perditio Vis.
The Essentia Buffer can store up to 8 points of any mix of Essentia within itself and accept Essentia tubes from any and all sides. This allows for very complex means of drawing multiple types of Essentia to a single point and directing it to their own specific sections of a filtering system with relative ease. However, the Buffer only emits 1 suction on its own, but this can be increase by 15 for each Arcane Bellows attached to one of its faces. Once can also attach, by right clicking on a face with an attached Tube with a Wand or Staff, red and blue markers that cut the suction on that side to 0 and 1 respectively. In this way, it is possible to allows the Buffer to take in Essentia from one side and allow it to pass to another without it being drawn back towards it or having pressures from its origin otherwise interfere with a separate system. They can be created in an Arcane Workbench with 2 Essentia Tubes in the middle side sections, an Essentia Valve in the top middle section, a Restricted Essentia Tube in the bottom middle section, and 4 Glass Phials in the corners, along with 25 Ordo and Aqua Vis.
The Alchemical Construct has no use on its own. However, it is used in several crafting recipes and in the creation of the Thaumatorium. It can be created in an Arcane Workbench with Greatwood planks in the center section, with 4 iron ingots in the corners, 2 Essentia Tubes in the middle side sections, and 2 Essentia Valves in the middle top and bottom sections.