Colne River, tidal water, Northern Biological Supplies

River Colne (Colchester), tidal water. 10x Nikon Plan Apo NA 0.45 objective
Odontella aurita (?)
Cerataulus smithii (?)

An arrangement locality slide from Colne River, Colchester (tidal water). Prepared by Norther Biological Supplies. Mounted in Clearax. Olympus BHB microscope using 450nm LED light.

I’ve chosen two of the diatoms (both from the middle row of the arrangement) for imaging at high resolution, and made an attempt at naming them – Odontella aurita and Cerataulus smithii. As these are my attempts at naming I have included question marks after the names. For these images a 63x Leitz Pl Apo NA 1.40 objective was used, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. Stacks prepared in Zerene (Pmax).