Material: high borosilicate glass. The brown glass bottle protects the substance from harmful ultraviolet rays. The marked tick mark is obvious, which is convenient for reading.
The volumetric flask is a flask with a glass stopper, and a white graduation line is engraved on the neck of the flask to measure its nominal capacity.
Material: high borosilicate glass. The brown glass bottle protects the substance from harmful ultraviolet rays. The marked tick mark is obvious, which is convenient for reading.