Plankton Collection Net with Vial Subcategory_Volumetric Flasks ten 4 by 3-inch plane

ten 4 by 3-inch plane glass mirrors at ~2

mounted on a 4mm-terminal base that drops inline with other modular circuit-demonstration components

TALL FORM || Beaker is tall form

bottle in borosilicate glass holds 125mL with glass stopper for biological oxygen demand testing and water quality analysis

Optically-worked glass double convex lens with a 200mm focal length and 1

Plankton Collection Net with Vial Subcategory_Volumetric Flasks ten 4 by 3-inch planeCollection net for aquatic plankton sampling, featuring fine mesh muslin netting, a swivel attachment, and collection vials for gathering microscopic organisms in the field.