Class A Kohlrausch Volumetric Flask, 100mL, Borosilicate Glass Pack Size_39 Tear-to-length blue litmus paper on

Tear-to-length blue litmus paper on a 5-meter roll detects acidic solutions during classroom acid-base chemistry activities without pre-cut strip waste

this 100mL bottle of nigrosin (Acid Black 2) saturated solution serves microbiology slide work

Class B graduated cylinder in borosilicate glass holds 2000mL with 34/35 polypropylene stopper and white graduations for large-volume measurement

and overflow-catching inner vessel

and differentiator circuits with student-wired input and feedback components

Class A Kohlrausch Volumetric Flask, 100mL, Borosilicate Glass Pack Size_39 Tear-to-length blue litmus paper onClass A Kohlrausch volumetric flask in borosilicate 3. 3 glass holds 100mL with 0. 06mL tolerance for precision sugar solution preparation.