pH 10.00 Standard Buffer Solution, Blue, 500mL Coating_Cork and organelles with hand-painted detail

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

this cork press compresses rubber and cork materials to improve pliability and seal quality in glassware setups

the fixed mounts steadying each lens for repeatable refraction and image-formation experiments at student-station scale

Ten rocks and ten minerals pair in this 20-piece specimen set for side-by-side identification practice in introductory geology coursework

and one glass ball

pH 10.00 Standard Buffer Solution, Blue, 500mL Coating_Cork and organelles with hand-painted detailDyed blue pH 10 standard buffer solution for calibrating pH meters and bringing alkaline samples to a known reference value in analytical chemistry.