Tianbo 50ml volumetric flask

Tianbo 50ml volumetric flask, divided into sizes, can provide binding ropes and engraved numbers

volumetric flaskPrecautions for use：

‌Inspection and cleaningBefore use, it is necessary to check for any leakage and carefully clean. ‌

‌Holding methodWhen injecting liquid, only hold the bottleneck on the marked line to prevent temperature changes. ‌

‌Liquid level observationWhen determining the liquid level position, the line of sight and the marking line should be at the same horizontal position. ‌

‌Dissolution and TransferSolute cannot be dissolved in a volumetric flask, it should be transferred after dissolution, and the total amount of solvent used to wash the beaker should not exceed the scale line. ‌

‌temperature controlThe volumetric flask cannot be heated, and the hot solution needs to be cooled to room temperature before transfer. ‌

‌Storage and maintenanceSolution, especially alkaline solution, should not be stored for a long time. After use, it should be washed clean in a timely manner, the bottle stopper should be plugged, and a piece of paper should be sandwiched between the stopper and the bottle mouth. ‌

‌Choose a suitable volumetric flaskIf preparing substances that are easily decomposed by light, brown volumetric flasks should be selected. ‌