Reg dr ref. me 2 ent for rupt. eardrum. b4 appt, she sugstd i use 9 parts water 1 part vinegar to clean it. is this safe? how much of each exactly?

Vinegar drops: Dilute vinegar drops are safe with ruptured eardrum, just be aware that you will have a slight burning sensation and/or vinegar taste in your throat as drops pass into middle ear and down Eustachian tube. The 1/10 dilution of vinegar gives you a 0.5% solution of acetic acid, the active ingredient. Usually we recommend a half strength dilution for 2.5% acid strength, but this burns more.

Yes: 9 teaspoons and 1 teaspoon would work as dilution Small amount to use with dropper in ear canal