Propane is a liquid and is sold by liquid measure (gallon) or by weight (pound). When buying by the gallon:
- Look to see that meter starts on zero.
When buying by the pound:
- Look to see that the cylinder is on the scale.
- Look to see that the scale arm is balanced before the tank is filled. This is your empty weight.
- Read the total weight when the container is filled.
- Subtract the empty weight from the total weight. This is your net weight of propane purchased.
For all types of sales:
- When the meter stops, the numbers should stop.
- Ask for the price per gallon or per pound before filling/re-filling a tank.
- Get a receipt.
- Check that the receipt has the correct quantity, unit price and total price.
It is not legal in Maryland to charge a customer a flat rate set dollar amount to re-fill a propane tank. And, it is not legal to add a charge for the labor of filling the tank (except the first time a tank has ever been filled a “purge” fee may be charged).
“$16.99 for a 20 lb tank re-fill” is not a legal method of sale
“$4.00 per gallon for propane” is a legal method of sale as is “Propane, $5.00 per pound”