Dont pick up tare containers with bare hands since your fingerprints add mass Use tongs to prevent this Dont lean on the bench while weighing Do record the mass of your container if you will need it later Do check the level indicator bubble before weighing The two rear balance feet serve as levelling screws Use the brush provided to clean spills in the weighing chamber Discard any disposable tare containers or weighing paper in the nearest wastebasket g Calorimetry