The chances of getting all the refrigerant out of any A/C system without a recovery "machine" is low.
The only chance was to pull a vacuum on the recovery tank before putting any R134A in the tank and get it below 250 in. lbs. of mercury. I am sure you probably don't have a vacuum gauge.
If you take the R134a to a local HVAC person they are going to charge you a fee to accept this "freon".
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Fanaticism is nowhere.
There is no tenderness or humanity in fanaticism.
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