I take some pics of what I suppose to be Spiretella and Stylonychia.
Aristoplan with Planapo 20/0,75
Interferential contrast
electronic flash 1/1000e
coolpix 995
length : 200µm

PL fluor 40/0,85
Interferential contrast
electronic flash 1/250e
length : 200µm

Best regards
JM