Nikon CFI Plan APO VC (Violet Corrected) 20x/0.75 DIC N2 Microscope Objective. The Working distance (WD) = 1mm. The objective is in excellent. Metal barrel has minor usage signs. Optics are clean and flawless.This objective is spring loaded and the spring works perfectly. A microscope objective with incredible brightness and the highest level of aberration correction across the entire field of view- the ideal choice for critical digital imaging. The CFI Plan Apochromat VC series Objective Lenses are top performance objectives with perfect correction of chromatic aberrations in the visible light range and excellent resolution throughout the field of view. They are the perfect choice for multi-stained, fluorescence specimens, brightfield and DIC techniques. In addition to the correction range of the conventional Apochromat series (435-660nm), axial chromatic aberration has been corrected up to the violet range (405nm), making these objectives highly effective near-UV imaging such as PA-GFP, as well as other photo-activation and photo-conversion proteins that activate at 405nm. CFI Plan Apochromat VC optics are also an ideal choice for critical confocal work. This objective works well in the near-UV, visible and NIR (see Transmittance curve in the last photo). Numerical Aperture NA : 0.75. Working Distance (mm): 1.0. Wavelength Range (nm) (T>50%) : 380 - 1100. Brightfield, Darkfield, DIC, Polarization, Fluorescence (near-UV, VIS), Raman imaging.. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical/Lab Equipment Attachments & Accessories\Microscope Parts & Accessories\Microscope Objectives". The seller is "tassilia" and is located in this country: US. This item can be shipped to United States, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, Indonesia, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi Arabia, Ukraine, United Arab Emirates, Qatar, Kuwait, Bahrain, Malaysia, Chile, Costa Rica, Panama, Trinidad and Tobago, Guatemala, Honduras, Jamaica, Antigua and Barbuda, Aruba, Belize, Dominica, Grenada, Saint Kitts-Nevis, Saint Lucia, Montserrat, Turks and Caicos Islands, Barbados, Bermuda, Brunei Darussalam, Bolivia, Egypt, French Guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman Islands, Liechtenstein, Sri Lanka, Luxembourg, Monaco, Macau, Martinique, Maldives, Nicaragua, Oman, Paraguay, Reunion, Uruguay.