Nigrosin Acid Black 2 Saturated Solution, 100mL Physics_Light & Optics with AC and DC both

with AC and DC both available on separate terminals for electronics builds

Kaolin (clay) powder (5g)

the workhorse mid-range value used most often for LED current-limiting and Ohm's-law student investigations

Center-of-gravity kit demonstrating how objects balance at their center of mass

and forensic techniques for comprehensive criminal investigation simulation

Nigrosin Acid Black 2 Saturated Solution, 100mL Physics_Light & Optics with AC and DC bothUsed as a negative stain to highlight bacterial morphology and capsules without fixing cells first, this 100mL bottle of nigrosin (Acid Black 2) saturated solution serves microbiology slide work.