A propane shop keeps a supplier statement plus the company's chosen check: sniff-test, stain-tube, or both. Most retailers receive pre-odorized product and do not inject. They still keep the file.
Customers report a change in smell. They do not measure mercaptan. Smell does not always work — odor fade is why the file exists.
Fill-in template. Call 610-228-0887.
Ask for the intake form Or call 610-228-0887.