Polypropylene Autoclavable Test Tube Rack for 21 x 30mm Tubes Base Size_9 x 9" this holder keeps light shaping

this holder keeps light shaping consistent across diffraction

and nuclear pores for introductory cell biology and molecular biology teaching

Top of the bath and the concentric rings are of stainless steel

and energy transformation while comparing launch strategies under Hooke's Law

and accessories for quantitative force and friction studies on adjustable inclined surfaces

Polypropylene Autoclavable Test Tube Rack for 21 x 30mm Tubes Base Size_9 x 9" this holder keeps light shapingAutoclavable polypropylene test tube rack holding 21 tubes up to 30 mm in diameter, sized for large test tubes and centrifuge tubes in professional laboratories.