"Avantor"

Sawn and lacquered slab showing thinly bedded truncated layers in a well-cemented sandstone. Large hand specimen.

Classic, dark; from the Columbia Plateau.

Lustrous, black 'hard coal'.

Black, soft; most widely mined.

Cemented glacial gravel.

Small, rounded pebbles and tightly cemented granules.

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

The Perfect Size for Refilling Smaller Bottles

Microfuge Tubes

First test step in Identifying Pathogenic Staphylococcus.

Beautifully polished and distinctive slabs or rare 2.3 billion year old fossil stromatolites. Well defined growth structures in matrix.

Safer solution for your students.

This compact power supply is ideal for DNA or RNA electrophoresis.

These ungraduated pipettes are ideal for nonvolumetric transfer work and are made from heavy-duty flint glass.

Latex eye dropper bulb. 2 cc (1.2 oz.) capacity, 0.25" (6mm) bore size, 0.625" (18 mm) diameter, 1.75" (45 mm) length.

Pack of 12 craft feathers, white.