The exudate on standing separates into 2 parts; a solid called "guad" which forms the lower layer, and a supernatant liquid which is the balsam.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
When the supernatant liquid has become perfectly transparent, it is carefully decanted.
"Peat and its Uses as Fertilizer and Fuel"
Samuel William Johnson
Agitate distillate with dry potassium carbonate, and draw off some of the supernatant fluid for testing.
"Aids to Forensic Medicine and Toxicology"
W. G. Aitchison Robertson