MicrobeHunter.com Microscopy Forum

Posted: **Mon Apr 01, 2024 6:05 pm**

Harry, good modern microscopy immersion oil does not dry. If yours seems too thick, then it might have the type B (thick) formulation. You can buy a vial of Cargille type A oil to try. The thinner type A oil should reduce the pressure of 100x NA 1.4 objective on cover slips.

Posted: **Tue Apr 02, 2024 2:07 pm**

Thanks zzffnn, I’ll order some and give it a try.
The oil I have is Harleco Immersion Oil and it’s designated as “High Viscosity - 1250 centistokes so that may be the issue.

Harry

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