The purpose of this project was to compare the performance of a gray tubing to that of a blue tubing for maple sap harvesting. The results obtained showed a slight but all the same significant increase in the average maximum temperature of the surfaces for the gray tubing compared to the blue during the harvest season. The mean maximum temperature measurements for the sap, on the other hand, were comparable for the 2 types of tubing. Regarding the total volumes of sap collected, the 2 types of tubing gave similarly comparable results on average. On the microbiology side, the gray tubing showed mostly slightly higher ATP bioluminescence results compared to the blue tubing without however any significant differences being detected. The quality of the sap evaluated by the sugar concentration profile was also found to be comparable or the 2 types of tubing with glucose and fructose concentrations of the sap not detected in the 2 cases for the vast majority of the samples. The results therefore show that under the experimental conditions studied, the performances of the gray and blue tubing are comparable. Document in French version only. _{(4080260-FIN-0621)}