5.27mm 20x Microscope Objective 0.40 NA, WD 5.27 mm - Euromex

Benefit from precise mid-range magnification together with a 0.40 numerical aperture and a compact working distance of 5.27 mm for consistently sharp images; order or request advice via Metav Werkzeuge to ensure compatibility and fast supply.

BioBlue.Lab BB.7220 – Euromex microscope objective, 20x / 0.40 NA

BioBlue.Lab BB.7220 is a 20x microscope objective intended for detailed optical observation in education and routine laboratory tasks, combining a high numerical aperture with a short working distance for improved detail and light collection.

• 20x magnification for clear mid-range detail
• Numerical aperture 0.40 for improved resolution
• Working distance 5.27 mm for close focusing

Sharper detail through higher light throughput

The 20x power combined with a 0.40 numerical aperture translates into better light gathering and finer detail in transmitted-light applications. A larger numerical aperture increases the objective’s ability to resolve small structures and enhances contrast when imaging thin specimens. For laboratories that require dependable optical performance, this optical combination supports accurate observation of cellular organisation and preparative detail without the complexity of immersion techniques. The PLi designation in the technical notes indicates the objective’s intended optical correction and build, contributing to consistent image quality.

Close working distance for precise specimen access

A working distance of 5.27 mm allows the objective to focus closely on slides and thin samples while maintaining clearance for coverslips and micro-manipulation in routine workflows. The compact focus distance benefits tasks where sample thickness is limited and where mechanical stability matters: less stage travel is needed to achieve focus, reducing vibration-related blur. While the short working distance requires mindful handling of specimens and tools, it also enables higher collection efficiency of light at the chosen magnification, supporting clearer structural definition.

Reliable everyday use in teaching and lab settings

Engineered for routine microscopy rather than specialised immersion procedures, this objective fits standard brightfield setups and classroom environments, delivering repeatable results across multiple users. The optical characteristics are suited to common laboratory needs, where resolution and user-friendly operation are prioritised. Integration with compatible optical tubes and condenser set-ups yields consistent imaging without the need for extensive recalibration, making it a pragmatic choice for institutions balancing performance and ease of use.

Installation, handling and preservation of image quality

Mounting the lens correctly and observing standard optical hygiene will preserve the objective’s performance. The nominal data — 20x, 0.40 NA, working distance 5.27 mm — should be matched with the appropriate tube length and illumination to exploit the lens’s capabilities. Routine cleaning with lens-safe materials and secure storage when not in use help maintain contrast and clarity over many sessions. For bespoke compatibility questions, the technical specifications provide a clear basis for checking mechanical and optical fit before acquisition.

For ordering details or technical consultation regarding supply and compatibility, contact Metav Werkzeuge in Emmerich by phone or email for tailored advice and fast delivery.

Technical data

• Article number: BB.7220
• SKU: BB.7220
• Brand: Euromex
• Model series: BioBlue.Lab
• Product type: Microscope objective
• UID: BB.7220

Facts

• Magnification: 20x
• Numerical aperture: 0.40
• Working distance: 5.27 mm

Special features

• PLi objective designation
• Intended for microscopy accessories → Objectives
• Category: For microscopes (Microscopy accessories > Objectives > For microscopes)

FAQ

What does the numerical aperture mean for imaging performance?
The numerical aperture (0.40) determines light-gathering capacity and resolving power; with the BioBlue.Lab BB.7220 this value supports improved detail and contrast at 20x magnification.

Is this objective suitable for classroom and routine lab use?
Yes, the Euromex BioBlue.Lab BB.7220 objective is designed for straightforward integration into standard microscopy setups used in teaching and routine laboratory workflows.

How close can the objective focus to the specimen?
The working distance of 5.27 mm specifies the clearance between the lens front and the specimen at focus, enabling close observation of thin samples while requiring careful stage handling.

Are there special mounting requirements for this objective?
Compatibility depends on the microscope’s objective mount and tube configuration; check the technical data and match tube length to achieve optimal performance with BB.7220.

What maintenance keeps the objective performing well?
Gentle cleaning with approved lens tissue and storage in a dust-free environment preserve image quality; the optical specifications of the Euromex BB.7220 provide a clear basis for regular care.

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