For tne, 2% BA, 20% BB, 12% Guaiacol, cottonseed oil is my carrier of choice, but there are many to choose from...
This will hold at 110mg/ml(possibly even a little higher), I make sure everything for my rats is 10% overdosed, so 100mg/ml TNE is actually 110mg....
Winny will hold at those percentages as well, don't need that much guaiacol if you are making it at 50mg/ml...