Before you learn how to empty receivers of cannabinoids using a microwave, please be advised there are several ways this can go wrong. This blog post does not purport to address all the possible safety concerns. Please consult your safety officer for full professional guidance.
High-purity THC/CBD distillate will be very viscous. If it is cold enough, it will become a glassy solid that does not flow. In order to empty the receivers often, you will need a way to heat the distillate just enough so that it can be poured without overheating.
The receivers are full of ~90% cannabinoids and in the presence of oxygen and heat, they can potentially degrade. Here are some tricks from Dabtown Dylan of Lucid Oils.

Microwave
A microwave is an inexpensive way to carefully and homogeneously add heat. Microwaves are able to penetrate the whole sample evenly and the glass is not being directly heated.*
There is still the possibility of overheating the THC/CBD distillate, so Dabtown doesn't heat for more than 30 seconds at a time and no more than 45 seconds total.
*Microwave ovens should be for lab use only and never used to heat food or drink. We are also pretty sure that operating a microwave on its side is not part of any lab's best practices policy. Read and follow your microwave oven's instructions.
Emptying the Receiver
Whether you are preparing for a second pass or just need to fill some vape cartridges, getting your distillate out is the priority. Be careful not to pour the distillate out all at once. It can form a large glob that can quickly overwhelm the mouth of whatever containing you are using.
Contact Us
We hope you enjoyed this hack about how to empty receivers of cannabinoids using a microwave. Please feel free to contact B/R with any questions.