Class A Schellbach Borosilicate Glass Burette with Glass Stopcock, Blue Graduations Capacity:50mL this 2-input XOR gate module

this 2-input XOR gate module shows HI and LO output states with red and green LEDs and a printed reference

Glass tubing diamond cutter features brass-mounted cutting tip for precise glass tubing cutting in laboratory apparatus construction

the ready-to-use indicator for cell-culture-media pH monitoring and biology acid-base demonstrations near the neutral range

this universal clamp holder accepts rods up to 20 mm in diameter and bolts securely to retort stands for oversized load support

Class A Schellbach Borosilicate Glass Burette with Glass Stopcock, Blue Graduations Capacity:50mL this 2-input XOR gate moduleDark Schellbach stripe inlaid behind the scale sharpens meniscus reading during precision titration, paired with a ground glass stopcock for traditional flow control.