Zeiss obectives

Item no.:440761-9905 Phase contrast objective Magnification: 63x Numerical Aperture (NA): 1.4 Immersion medium：Oil  RMS thread  Condition: Used, Excellent condition. Clean optics.

Read more less

New condition. Objective Type: Phase Contrast (ph) objective Item no.:420931-9910 Magnification: 5X. Numerical Aperture (N.A.): 0.13. System: Infinity-corrected (∞). M27 thread

Read more less

New condition. Objective Type: Phase Contrast (ph) objective Item no.:420941-9910 Magnification: 10X. Numerical Aperture (N.A.): 0.25. System: Infinity-corrected (∞). M27 thread

Read more less

Used, in good optical condition. Magnification 40x Numerical Aperture 0.75 Free Working Distance [mm] 2.1 Coverglass Thickness [mm] 0 Thread Type M27x0.75 Immersion Water Field of View [mm] 23 Parfocal Length [mm] 45.00   W Achroplan/W N-Achroplan These water immersion objectives are used especially in physiology, in conjunction with the upright microscope, for samples such as thick brain sections. On account of their thickness, such samples cannot be observed with inverted Axiovert microscopes and LD objectives, contrary to the examination of cell cultures in transparent vessels. The upright Axioskop 2 FS makes it possible to immerse the objective into a medium contained, e.g., in a Petri dish and examine the specimen from above. Focusing of the Axioskop 2 FS acts on the nosepiece instead of the stage (FS = Fixed Stage).These objectives are, of course, also used for transmitted-light microscopy. One example is the draining of electrical potential from cells. “Achroplan” water immersion objectives are specially adapted to requirements in electrophysiology (patch-clamp technique), in intravital microscopy, in microcirculation studies, in the examination of vital brain sections and other thick specimens. In these techniques, some fundamental conditions have to be satisfied: Superb optical performance and transmission, slender form, front part of special material and long working distance. All Water Achroplan objectives have fields flattened across a diameter of 20 mm. They allow all contrasting methods, including high-resolution differential interference contrast (DIC). Thanks to their high numerical apertures, they not only provide excellent images but also are ideal for fluorescence - not least because of the use of special glass types that are highly transmissive to the excitation light. Further, these objectives are suitable for the "INFRAPATCH" method at wavelengths up to 780 nm (special IR versions are available). The slender front part of the objective and the long working distance of these objectives provide sufficient space for the specimen to be well accessible to all microtools (patch-clamp electrodes, microinjection capillaries etc.). It is possible to implement big positioning angles to minimize self-capacitance in patch-clamp potential draining. Moreover, the slender front part barrel is made of special, insulating plastics of extremely low self-capacitance. The material is inert, i.e. it does not release metal ions to the surrounding medium; it is corrosion-proof, chemically resistant and of minimum thermal conductivity. Transmittance curve：

Read more less

Used,in good optical condition. Zeiss Ultrafluar 10X ultraviolet light and visible light objective lens This objective requires the use of quartz cover slips. The objective is sensitive to temperature fluctuations. Transmittance curve:

Read more less

Item no.:415500-1604-001 Magnification: 100X Numerical Aperture (NA): 1.25 Immersion Medium: Oil Cover Glass Thickness: ∞/0.17  RMS thread Used,in perfect optical condition.  

Read more less

Item no.:422472-9960 Magnification: 50x Numerical Aperture (NA): 0.55 M27 thread Condition: Used, Excellent condition. Clean optics.

Read more less

Used, in good optical condition. This objective lens is suitable for both transmitted and reflected light. Magnification : 5x Numerical Aperture : 0.13 Free Working Distance : 14.5[mm] Coverglass Thickness : 0[mm] Thread Type : M27 Immersion : Without Immersion Field of View [mm] : 25 Optical System : Infinity Color Corrected System (ICS) Color Correction : semi-apochromatic  

Read more less

Used, in good optical condition. This objective lens is suitable for both transmitted and reflected light. Free working distance:15.1mm EC Epiplan-Neofluar This is a series of objectives for the examination of materials. They differ from Epiplan objectives by their higher NA and, accordingly, higher resolving power and like all EC objectives they are optimized for highest contrast. Unlike the Epiplan series, the EC Epiplan-Neofluar series includes 1.25x and 2.5x objectives. These low-power objectives provide maximum object field diameters up to 20 mm. EC Epiplan-Neofluar objectives are also suitable for transmitted-light work. Because of spherical aberration, specimens with cover glass should not be observed with an objective magnification above 20x. There are no restrictions for uncovered specimens. Due to their strict telecentricity on the object side, these objectives are ideal for measuring purposes.They differ from Epiplan objectives by their higher NA and, accordingly, higher resolving power and of course like all EC objectives for highest contrast. Unlike the Epiplan series, the EC Epiplan-Neofluar series includes 1.25x and 2.5x objectives. These low-power objectives provide maximum object field diameters of 20 mm.EC Epiplan-Neofluar objectives are also suitable for transmitted-light work. Because of spherical aberration, specimens with cover glass should not be observed with objective powers above 20x.There are no restrictions for uncovered specimens.

Read more less

Used, in good optical condition. Free Working Distance(mm) : 9.0 This objective lens is suitable for both transmitted and reflected light. EC Epiplan-Neofluar This is a series of objectives for the examination of materials. They differ from Epiplan objectives by their higher NA and, accordingly, higher resolving power and like all EC objectives they are optimized for highest contrast. Unlike the Epiplan series, the EC Epiplan-Neofluar series includes 1.25x and 2.5x objectives. These low-power objectives provide maximum object field diameters up to 20 mm. EC Epiplan-Neofluar objectives are also suitable for transmitted-light work. Because of spherical aberration, specimens with cover glass should not be observed with an objective magnification above 20x. There are no restrictions for uncovered specimens. Due to their strict telecentricity on the object side, these objectives are ideal for measuring purposes.They differ from Epiplan objectives by their higher NA and, accordingly, higher resolving power and of course like all EC objectives for highest contrast. Unlike the Epiplan series, the EC Epiplan-Neofluar series includes 1.25x and 2.5x objectives. These low-power objectives provide maximum object field diameters of 20 mm.EC Epiplan-Neofluar objectives are also suitable for transmitted-light work. Because of spherical aberration, specimens with cover glass should not be observed with objective powers above 20x.There are no restrictions for uncovered specimens.

Read more less

Used, in good optical condition. This objective lens is suitable for both transmitted and reflected light. Free working distance: 4.0mm This is a series of objectives for the examination of materials. They differ from Epiplan objectives by their higher NA and, accordingly, higher resolving power and like all EC objectives they are optimized for highest contrast. Unlike the Epiplan series, the EC Epiplan-Neofluar series includes 1.25x and 2.5x objectives. These low-power objectives provide maximum object field diameters up to 20 mm. EC Epiplan-Neofluar objectives are also suitable for transmitted-light work. Because of spherical aberration, specimens with cover glass should not be observed with an objective magnification above 20x. There are no restrictions for uncovered specimens. Due to their strict telecentricity on the object side, these objectives are ideal for measuring purposes.They differ from Epiplan objectives by their higher NA and, accordingly, higher resolving power and of course like all EC objectives for highest contrast. Unlike the Epiplan series, the EC Epiplan-Neofluar series includes 1.25x and 2.5x objectives. These low-power objectives provide maximum object field diameters of 20 mm.EC Epiplan-Neofluar objectives are also suitable for transmitted-light work. Because of spherical aberration, specimens with cover glass should not be observed with objective powers above 20x.There are no restrictions for uncovered specimens.  

Read more less

Used, in good optical condition. Item no.:420639-9900-700 M27 thread.

Read more less

Used, in good optical condition. Item no.:4826140 Magnification Power: 10xNumerical Aperture: 0.30Tube Length:  160

Read more less