100x Immersion Oil Objective 0.2 mm Working Distance NA 1.25, Iris Diaphragm - Euromex

Take advantage of high-resolution 100x imaging, an NA of 1.25 and a short working distance that enables precise cell- and tissue-level observation; order via Metav Werkzeuge or consult their specialists for application-specific advice.

Delphi-X Observer DX.7200-I — 100x oil-immersion microscope objective, NA 1.25

The Delphi-X Observer DX.7200-I is a 100x oil-immersion microscope objective designed for demanding life-science imaging where maximum resolution and controlled contrast are required

• 100x oil immersion magnification
• Numerical aperture 1.25 for high resolution
• Built-in iris diaphragm for contrast control

Resolve finer detail with very high numerical aperture

With a Numerical aperture of 1.25 and 100x magnification, this objective delivers markedly improved light-gathering ability and lateral resolution compared with lower-NA optics. The high NA reduces the Airy disc diameter, which in practical terms means sharper structural detail in brightfield and other transmitted-light techniques. The specified working distance of 0.2 mm indicates a very short focus clearance typical of oil-immersion objectives; this is essential for achieving the stated resolution but requires correct handling and the use of immersion oil between cover glass and lens to maintain optical continuity.

Greater sample contrast and depth control when it matters

A built-in iris diaphragm gives direct control of the effective aperture and therefore a simple, mechanical way to balance contrast against resolution for different specimens. Closing the diaphragm increases depth of field and image contrast at the cost of some resolution, while opening it lets the objective exploit more of its Numerical aperture for maximum detail. This integrated diaphragm reduces the need for additional condenser adjustments during routine workflows and supports reproducible imaging when switching between samples or operators.

Practical use, handling and compatibility for life-science applications

The design as an immersion PLi oil objective indicates optimisation for high-resolution biological work where cover-glass thickness and refractive-index matching are critical. Short working distances demand care during focusing and sample preparation; routine use should include correct immersion oil application and gentle cleaning after each session to protect lens coatings. The optic is specified for microscopy applications in life science contexts and pairs best with upright and inverted research microscopes that accept standard objective mounts; technical queries on mechanical fit can be clarified with the supplier before purchase.

Contact Metav Werkzeuge for tailored advice on integrating this optical solution into existing microscopes or workflows; Metav can confirm compatibility and supply additional technical data where needed

Technical Data

• Manufacturer: Euromex
• Model series: Delphi-X Observer
• SKU / Article number: DX.7200-I
• Product type: Microscope objective

Core specifications

• Magnification: 100x
• Numerical aperture: 1.25
• Working distance: 0.2 mm
• Immersion: oil
• Iris diaphragm: built-in

Features and compatibility

• PLi oil objective design
• Recommended for life-science imaging
• Category: For microscopes / Objectives

FAQ

What optical resolution advantage does this objective provide?
The Delphi-X Observer DX.7200-I achieves higher lateral resolution through its Numerical aperture of 1.25, enabling finer structural detail than objectives with lower NA when used with oil immersion.

Is immersion oil required and why?
Yes, immersion oil is required; the Delphi-X Observer DX.7200-I is specified as an oil-immersion objective and oil between the cover glass and lens preserves refractive-index continuity to realise the stated NA and resolution.

How does the built-in iris diaphragm affect imaging?
The built-in iris diaphragm on the Delphi-X Observer DX.7200-I allows adjustment of effective aperture to trade off depth of field and contrast against ultimate resolution, simplifying routine contrast control.

Will the short working distance cause practical issues?
The short working distance of 0.2 mm means careful focusing and sample preparation are necessary; when used correctly, the Delphi-X Observer DX.7200-I delivers its intended performance without compromise.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com