Have you Ever Tried to Purge Bho Without a Vacuum?

The finest quality Butane hash oil is vacuum purged to improve the flavor and fragrance. A vacuum purge, as part of an efficient post-processing workflow, eliminates any surplus solvents, in this example butane and/or propane, to give an oil suitable for medical or recreational use.

What Is Vacuum Purging

Vacuum purging, also known as outgassing, cannabis extracts in a vacuum oven that eliminates leftover butane and propane from the finished BHO products. As a consequence, BHO processors obtain a clean, delicious, and fragrant oil-free of butane’s harsh taste.

Purging systems for removing butane and/or propane from cannabis and hemp extracts range from amateur contraptions that employ a big cooking pot as a vacuum chamber to industrial-scale systems that can handle numerous batches at once and effectively heat BHO extracts.

So, how exactly does vacuuming work? After the crude oil has been extracted, it is placed in a vacuum chamber, which reduces ambient pressure and so lowers the boiling temperatures of the butane and propane solvents. To summarise, substantially lower temperatures may be employed to purge butane without damaging any medicinal chemicals.

The weight of the atmosphere provides around 29.92″ inHg of pressure at a standard sea level height. The boiling point of compounds is affected by this invisible and ubiquitous weight. When air pressure rises, as it does at lower elevations, compounds require more energy to boil, raising their boiling point.

As a result, as air pressure decreases, as it does at higher elevations, the boiling point decreases as well. A vacuum chamber, using this notion, eliminates the weight of the atmosphere, allowing the solvent to boil at a lower temperature. This is crucial for removing solvents without using as much heat.

Butane has a boiling point of 30.2o F at sea level. Propane has a boiling point of -43.6o F. While it is feasible to lower the boiling points of both solvents in a vacuum, you will also lower the boiling points of the cannabis constituents. THC has a boiling point of 315o F at sea level. THC, on the other hand, boils at 23o F in a vacuum at -29.9196″ Hg.

Why Is Vacuum Purging Important

If you want to make the finest grade BHO extracts with the fewest contaminants, you won’t want to skip the vacuum purge. Outgassing is the most effective method for removing the harsh-tasting and unnecessary butane solvent from crude oil. Without it, you’re left with contaminated oil that is unlikely to meet state-mandated residual solvent limitations. Furthermore, oxygen is excluded from the chamber’s environment, which decreases oxidation and keeps your oil fresher for longer.

What Equipment Do You Need to Vacuum Purge

Of course, the consequences of a vacuum purge vary depending on the type of equipment used. Differences in equipment may also affect the time required to purge the solvent and the temperatures required to boil off the solvent from the shatter, wax, or whatever else you are producing.

Vacuum Chamber

All of the action takes place in a vacuum chamber or a vacuum oven. The heating capacities of vacuum chambers vary, but the finest chambers ensure that every area of the oil is uniformly heated. A stopcock valve in a vacuum purge chamber restricts the flow of your gas. You’ll discover a support plate or rack within the vacuum chamber where you may set your BHO. On a commercial level, a vacuum chamber has shelving units where an operator may store many mats or trays carrying a thin film (slab) of the extract.

The pressure gauge’s indication indicates the pressure within the vacuum chamber. When in a vacuum, the pressure should be zero, at which point the outgassing can commence. The pressure should be around -29 inches of mercury. The atmospheric pressure is typically measured in inches of mercury by most vacuums. This will be denoted by the letters inHg or “Hg.”

Pump For Vacuuming

The evaporated butane is sucked out of the chamber by the vacuum pump. Choose an oil-free pump capable of handling the pressures and temperatures required in the vacuum purging process for the finest grade BHO. Using oil-sealed pumps increases the possibility of oil spilling onto the shatter or wax and spoiling your goods.

Bottom Line

There are several varieties of vacuum pumps available today, each producing a different amount of vacuum. Because they do not require any oil, diaphragm pumps are the finest solution for the cannabis extraction sector. They are also simple to maintain and very resistant to corrosion. Many diaphragm pumps are also quiet and have a long lifespan. While these pumps are not cheap, they will pay for themselves in the long term.