Many thanks everyone for pointing me to the threads and guides. I have some idea of lab safety rules and working with dangerous stuff like radioactive materials and strong acids so I can try a few different things.
The photo of the Navicula is beautiful, please provide details - what microscope, objectives, illumination etc. Thanks in advance.
Thanks Hobbyst46, this was done with my Phomi using the Zeiss Jena 40/0.95 apo objective with an unmatched Zeiss West 63/1.4 DIC slider (the combo works but results in a strong gradient)
Whith children or other causes of turbulences in the houshold (like the mother of the children
That gave me a good laugh
Moving the Phomi with its enormous footprint to its current location resulted in a dramatic exchange with my wife (things cooled down after I showed her a how amazing diatoms and protozoans are).