Delafield's Formula Hematoxylin DNA/RNA Nuclear Stain, 500mL Base Size_8 x 8" 8mm rod attachment and a

8mm rod attachment and a centered 50mm aperture together hold a lens square against an optical-bench rail for repeatable refraction

Teach coding by using the accelerometer and gyroscope inside the Go Direct Hand Dynamometer to

Reagent-grade 100g sodium iodide

Longitudinal head-throat-lung cross section reveals the full air pathway from nostrils through trachea to alveoli at half life size for respiratory teaching

Delafield's Formula Hematoxylin DNA/RNA Nuclear Stain, 500mL Base Size_8 x 8" 8mm rod attachment and aUsed to stain DNA rich cell nuclei deep blue purple for microscopy, this 500mL bottle of Delafield's formula hematoxylin pairs with eosin in routine H&E histology slide protocols.