Civil Code, Art. 1562

In a sale of goods, there is an implied warranty or condition as to the quality or fitness of the goods, as follows: (1) Where the buyer, expressly or by implication, makes known to the seller the particular purpose for which the goods are acquired, and it appears that the buyer relies on the seller's skill or judgment (whether he be the grower or manufacturer or not), there is an implied warranty that the goods shall be reasonably fit for such purpose; (2) Where the goods are brought by description from a seller who deals in goods of that description (whether he be the grower or manufacturer or not), there is an implied warranty that the goods shall be of merchantable quality. (n)