Pipets must always be used with a rubber safety bulb to provide the suction force explain. A stoppered flask in your laboratory locker is stamped by the manufacturer with the notation TC XXXXXXXXXXmL...

Pipets must always be used with a rubber safety bulb to provide the suction force explain. A stoppered flask in your laboratory locker is stamped by the manufacturer with the notation TC 25 250 mL Explain what this notation means. Why precision volumetric glassware should be rinsed with distilled water after use (as well as before using).