6-Piece Acrylic Lens Set, 38mm (Convex, Concave, Plano, Meniscus) Grade_Food Grade Two independent output channels on

Two independent output channels on this compact AC/DC power supply deliver six selectable voltages up to 12V at 500 mA each

Moderate-conductivity brass rods at 300 by 3mm in a ten-pack

Large-scale typical flower model with removable floral parts and a bisected ovary showing internal ovule arrangement for detailed botany instruction

003 mm accuracy at 10 mm

and concentrated oxidizer monitoring in water-treatment workflows

6-Piece Acrylic Lens Set, 38mm (Convex, Concave, Plano, Meniscus) Grade_Food Grade Two independent output channels onCompact 38mm acrylic six piece lens set covering convex, concave, plano convex, converging and diverging meniscus, and plano concave geometries for safer student station optics.