pH 10.00 Standard Buffer Solution, Blue, 500mL Coating_Cork designed to hold visible iron-filing

designed to hold visible iron-filing field lines and support side-by-side magnet-strength comparisons in mechanics labs

and nine 10g weights for introducing elasticity and spring-constant measurement

and reactive-metal electrolysis behavior

and organelles with hand-painted detail on a mounted base for biology teaching

Monocot stem model exposes scattered vascular bundles embedded in ground tissue for comparative plant anatomy and grass-family stem teaching

pH 10.00 Standard Buffer Solution, Blue, 500mL Coating_Cork designed to hold visible iron-filingDyed blue pH 10 standard buffer solution for calibrating pH meters and bringing alkaline samples to a known reference value in analytical chemistry.