100x Oil Immersion Microscope Objective NA 1.25 WD 0.2 mm - Euromex

Take advantage of a 100x oil immersion objective with a numerical aperture of 1.25 and a minimal working distance of 0.2 mm to achieve high-contrast, high-resolution imaging for demanding life‑science applications; order the Delphi‑X Observer DX.7700 directly via Metav Werkzeuge or ask our consultants if needed.

Delphi‑X Observer DX.7700 — 100x Oil Immersion Microscope Objective by Euromex

The Delphi‑X Observer DX.7700 is a 100x oil immersion microscope objective designed for high‑resolution light microscopy in life‑science and clinical laboratories, offering a numerical aperture of 1.25 and a working distance of 0.2 mm for maximised detail capture.

• 100x oil immersion magnification
• High numerical aperture 1.25 for resolution
• 0.2 mm working distance for detailed focus
• Compatible with Delphi‑X Observer series

Exceptional resolution for subcellular detail

This objective delivers a combination of 100x magnification and a numerical aperture (NA) of 1.25, which together increase light‑gathering capacity and lateral resolution. In practical terms, the high NA enables finer contrast between closely spaced structures, so delicate filamentous or subcellular features become distinguishable. Because the lens is specified as an oil immersion type, immersion medium is applied between the coverslip and the front element to reduce refractive losses, improving image sharpness and signal intensity for fluorescent and brightfield techniques.

Optimised working distance and optical design for routine use

With a working distance of 0.2 mm, the optical geometry is configured for applications requiring proximity to the specimen, such as high‑resolution histology or microbiology preparations. The objective is described as a PLPHi plan type, indicating a flat field correction suitable for even illumination across the image circle and high planarity for tiled imaging. The construction and correction reduce the need for frequent refocusing during scanning, which supports efficient workflow and reproducible capture in routine and research environments.

Integration, reliability and typical applications

This lens has been developed for integration within the Delphi‑X Observer series and similar upright microscopes where a 100x oil objective is required. Typical applications include cell biology, pathology slide work, and any examination where submicrometre detail is required. The optical specifications are presented in the Life Science product documentation (source: Life Science PDF, p. 26), and the objective’s configuration is intended to perform reliably under standard laboratory conditions when used with appropriate immersion oil and coverslip thickness.

Practical benefits for laboratory throughput

Choosing an objective with a high NA and oil immersion capability translates to fewer repeat scans, more decisive image interpretation and a shorter time to result. The optical performance supports both brightfield and fluorescence modalities where increased photon collection is decisive. Careful handling and correct immersion technique will preserve the front lens and maintain performance over repeated uses, supporting sustained productivity in busy lab settings.

Contact Metav Werkzeuge for technical consultation and procurement of the DX.7700; Metav’s specialists in Emmerich provide detailed data sheets and reliable supply — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: DX.7700
• SKU: DX.7700
• Brand: Euromex
• Series: Delphi‑X Observer
• Product type: Microscope objective

Facts

• Magnification: 100x
• Numerical aperture: 1.25
• Working distance: 0.2 mm
• Immersion medium: Oil

Special features

• PLPHi plan objective
• Designed for life‑science applications
• Source: Life Science PDF p. 26

FAQ

What immersion medium is required for optimal performance?
Oil immersion is required; the DX.7700 is specified as an oil immersion objective and performs best with appropriate immersion oil between coverslip and front lens.

Can this objective be used on other upright microscopes outside the Delphi‑X line?
Yes, the optical design of the objective allows compatibility with many upright microscope systems that accept the same mounting and cover glass parameters; confirm mechanical fit and parfocality with the intended microscope.

How does the numerical aperture affect image quality?
A higher numerical aperture, such as the 1.25 of this objective, increases light collection and lateral resolution, enabling clearer, higher‑contrast images of fine structures when used with correct immersion technique.

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