If your microscope suddenly looks blurry at 40X magnification, the problem may not be your specimen—it could be oil contamination.

One of the most common issues we see on clinical microscopes like the Olympus BX40, BX41, BX43, CX31, CX41, CX43 and the Nikon E400, 50i, and Ci is immersion oil accidentally getting onto the 40X objective after using the 100X oil immersion objective.

The 40X objective is a dry objective, meaning it is not designed to be used with immersion oil. Even a small amount of oil left on the front lens can reduce image quality, decrease contrast, and make it difficult to achieve a crisp, sharp image.

In this video, we'll show you the proper way to safely clean your 40X objective using the correct lens paper and optical cleaning solution. In many cases, removing the oil restores the objective to like-new performance in just a few minutes.

However, if oil has been left on the lens for an extended period or the objective has become scratched or damaged, cleaning alone may not solve the problem. Fortunately, Microscope Marketplace stocks a large inventory of replacement 40X objectives for many of the industry's leading microscope brands.

We carry replacement objectives from Olympus, Nikon, Zeiss, Leica, and ACCU-SCOPE, with many of the most popular clinical microscope objectives in stock and ready to ship. Whether you need a replacement for an Olympus BX or CX series microscope, a Nikon E400, 50i, or Ci, or another common laboratory microscope, chances are we have the objective you need.

Our experienced microscope specialists can also help identify the correct replacement objective if you're unsure which model fits your microscope.

At Munday Scientific and Microscope Marketplace, we're committed to keeping your microscope performing at its best. From replacement objectives, bulbs, and accessories to complete microscope repair and refurbishment, we're your trusted source for microscope parts and expert service.

Need a replacement objective? Contact Microscope Marketplace today. With top brands in stock and fast shipping, we'll help get your microscope back in focus quickly.