--- product_id: 471063345 title: "20X Achromatic Objective Lens for Biological Microscope, Brass Chrome Plated, 0.40 Numerical Aperture, 160mm Tube Length, RMS Thread" brand: "ywbl-wh" price: "£23.64" currency: GBP in_stock: true reviews_count: 9 category: "Ywbl Wh" url: https://www.desertcart.co.uk/products/471063345-20x-achromatic-objective-lens-for-biological-microscope-brass-chrome-plated store_origin: GB region: United Kingdom --- # 0.40 Numerical Aperture for Brighter Images 20X Magnification RMS Thread Standard Compatibility 20X Achromatic Objective Lens for Biological Microscope, Brass Chrome Plated, 0.40 Numerical Aperture, 160mm Tube Length, RMS Thread **Brand:** ywbl-wh **Price:** £23.64 **Availability:** ✅ In Stock ## Summary > 🔬 Elevate your microscope game — see more, discover faster! ## Quick Answers - **What is this?** 20X Achromatic Objective Lens for Biological Microscope, Brass Chrome Plated, 0.40 Numerical Aperture, 160mm Tube Length, RMS Thread by ywbl-wh - **How much does it cost?** £23.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/471063345-20x-achromatic-objective-lens-for-biological-microscope-brass-chrome-plated) ## Best For - ywbl-wh enthusiasts ## Why This Product - Trusted ywbl-wh brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Spring Protection:** Automatic spring device prevents specimen damage by gently retracting on contact. - • **Universal RMS Thread Fit:** Seamlessly compatible with most professional biological microscopes worldwide. - • **Crystal-Clear 20X Magnification:** Zoom into microscopic worlds with precision and clarity that professionals trust. - • **Brilliant Brightness with 0.40 NA:** Experience enhanced light transmittance for vivid, high-contrast imaging every time. - • **Durable Brass Chrome Plated Build:** Engineered for longevity and precision with a sleek, corrosion-resistant finish. ## Overview This 20X achromatic objective lens features a 0.40 numerical aperture and a 160mm tube length, designed with a brass chrome-plated shell for durability. It includes an automatic spring mechanism to protect specimens and uses the international RMS thread standard, ensuring broad compatibility with professional biological microscopes. Ideal for crisp, bright imaging with reliable parfocal performance. ## Description Buy 20X Achromatic Objective Lens for Biological Microscope, Brass Chrome Plated, 0.40 Numerical Aperture, 160mm Tube Length, RMS Thread: Lenses - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Very satisfied! - For context, I am an amateur when it comes to microscopy. My use and interest is purely from a hobbiest point of view. As many do, I removed my oil objective and opted for this 20X. It mounted up easily provides a good crisp image. It only requires a slight fine adjustment when switching from my 10X or to my 40X, making it as if it was OEM. It would have been nice to have a matching color but given the price and functionality, the different color is purely cosmetic. I'd definitely buy this objective again. Review: Excellent quality and fast service - The 20X achromatic objective lens (195mm optical bench length) was ordered on 5/6/2023 and received on 5/10/2023 (VERY prompt service). It has excellent optical quality for an intermediate magnification objective (to go with 4X and a 60X achromatic 195mm optical bench length objective lenses and provides near parfocal performance for a refurbished student microscope). ## Features - Basic Specification: This lens has a magnification of 20X, common rail distance of 195mm, and parfocal distance of 45mm. - Automatic : Spring device, can automatically when touches the cover glass during observation to the lens from crushing the specimen. - Clearer: This lens is coated with high light transmittance, with high refractive index, and the image is brighter. - Wide Application: The screw interface size is the international standard RMS size, which can be used by most professional biological microscopes on the market. - Brass Material: Made for brass material, fine workmanship and fall prevention, exquisite and , chrome plated accuracy material for the shell. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B94PWB1P | | Accessory Connection Type | default | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #103 in Microscope Lenses | | Color | Black, Clear | | Customer Reviews | 3.9 3.9 out of 5 stars (16) | | Date First Available | August 10, 2022 | | Finish | Finish | | Handle Material | default | | Included Components | inc | | Installation Method | InstallationMethod | | Item Package Quantity | 1 | | Item Weight | 2.82 ounces | | Manufacturer | YWBL-WH | | Material | Metal | | Package Dimensions | 3.86 x 1.85 x 1.38 inches | | Part Number | YWBL-WHsmi1hwutp41273 | | Power Source | PowerSource | | Spout Height | 1 Centimeters | | Type of Bulb | LED | ## Product Details - **Light Source Type:** LED - **Material:** Metal - **Color:** Black, Clear - **Magnification Maximum:** 20 x - **Brand:** YWBL-WH - **Compatible Devices:** default - **Objective Lens Description:** Achromatic - **Power Source:** PowerSource - **Manufacturer:** YWBL-WH ## Images ![20X Achromatic Objective Lens for Biological Microscope, Brass Chrome Plated, 0.40 Numerical Aperture, 160mm Tube Length, RMS Thread - Image 1](https://m.media-amazon.com/images/I/61jMCP8or1L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very satisfied! *by A***E on November 10, 2024* For context, I am an amateur when it comes to microscopy. My use and interest is purely from a hobbiest point of view. As many do, I removed my oil objective and opted for this 20X. It mounted up easily provides a good crisp image. It only requires a slight fine adjustment when switching from my 10X or to my 40X, making it as if it was OEM. It would have been nice to have a matching color but given the price and functionality, the different color is purely cosmetic. I'd definitely buy this objective again. ### ⭐⭐⭐⭐⭐ Excellent quality and fast service *by D***C on May 21, 2023* The 20X achromatic objective lens (195mm optical bench length) was ordered on 5/6/2023 and received on 5/10/2023 (VERY prompt service). It has excellent optical quality for an intermediate magnification objective (to go with 4X and a 60X achromatic 195mm optical bench length objective lenses and provides near parfocal performance for a refurbished student microscope). ### ⭐⭐⭐⭐ Good value for money *by D***W on December 1, 2022* This lens proved to be a good match for my Amscope 120 and Swift 350 microscopes, giving images at least as good as the supplied 10x objectives. The field-of-view of 0.9 mm through the 10x 18 mm eyepiece was not flat at the edges, but the central area captured by a lens-less USB camera (0.18 mm) was good. Works fine with plankton samples as shown by the image of Ceratium. ## Frequently Bought Together - 20X Objective Brass Achromatic Objective Lens Clear Standard 20mm Thread Biological Microscope Objective Telescope Accessories - Achromatic Objective, 60X Achromatic Microscope Objective Lens High Magnification 20.2mm Thread for Compound Magnifier Supplies, Borescopes - Swift SW380T 40X-2500X Magnification, Siedentopf Head, Research-Grade Trinocular Microscope Compound Lab with Wide-Field 10X/25X Eyepieces, Mechanical Stage, Ultra-Precise Focusing, Camera-Compatible --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/471063345-20x-achromatic-objective-lens-for-biological-microscope-brass-chrome-plated](https://www.desertcart.co.uk/products/471063345-20x-achromatic-objective-lens-for-biological-microscope-brass-chrome-plated) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-07*