1% Aqueous Safranin O Staining Solution, 500mL Base Shape_A-Shaped Long-focal 50mm concave glass mirror

Long-focal 50mm concave glass mirror at 300mm focal length and ~1

75 by 3 inch wooden block for physics coursework

Economical minute timer setting intervals up to one hour via a top knob

and frequency-response student work

this insulated wire keeps polarity color-coded across the mid-reach branches of small-scale breadboarded circuits

1% Aqueous Safranin O Staining Solution, 500mL Base Shape_A-Shaped Long-focal 50mm concave glass mirrorUsed to highlight Gram negative bacteria as a counterstain and color plant cell walls red in botany prep, this 500mL bottle of 1% aqueous safranin O serves microbiology and biology slide work.