MicrobeHunter.com Microscopy Forum

Roldorf wrote: ↑

Wed Sep 09, 2020 8:29 pm

Just a thought, have you fully opened the condenser diaphragm?

yes, it's fully open

With the standard 1.25 N.A. condenser, you may need to oil the condenser to the slide in order to get the stops to work. A DF condenser with a concave upper surface is a dry DF condenser . Do not oil. Nevertheless, it sounds like your problem is in getting the correct working distance established w...

BramHuntingNematodes wrote: ↑

Tue Sep 08, 2020 11:30 pm

Oh how ho very interesting let's see a picture or two.

A dark field condenser will not need stops but may well need a drop of oil on top and to be touching the bottom of the slide

mine is a dry / concave condenser

ok, i recently purchased a second-hand Brunel SP200, its a decent scope that came with a set of plan and a set of phase objectives, the light field stuff is fine but the dark field is not. I'm not getting any side illumination. i have dozens of darkfield stops / masks and regardless of which size i ...

So, it transpires that there are two ranges of Swift microscopes ; those that are only sold on Ebay and Amazon which are rumoured to be poor quality and those that are sold at microscope world, for example, that are claimed to be much higher quality....or are they two different companies? when i com...

So, it transpires that there are two ranges of Swift microscopes ; those that are only sold on Ebay and Amazon which are rumoured to be poor quality and those that are sold at microscope world, for example, that are claimed to be much higher quality....or are they two different companies? when i com...