Rotovap solution advices

Hello everyone,

I’m looking to by rotovap solution for Fragrance applications (vanilla absolute, cocoa absolute, tonka absolutes, and maybe others) for my own use.

For this work, I need to evaporate ethanol very gently at 35–40 °C, otherwise I will lose the delicate aromatic molecules.

For this, i need good rotovap and a diaphragm vacuum pump (oil-free, with PTFE parts) that can hold a stable vacuum below 100 mbar.

I would use the vevor RE 501 but seems i can’t reach 100mbar due to bad sealing...

I’don’t have enough money to buy buchi rotovap ^^ and i would to have advices about a solution please

Thanks a lot 😊