20x Objective with Silver Housing and Achromatic Correction for Biological Microscope with Aperture 0.40 and Conjugate Distance 185 mm
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The 20x objective fills the space in the biological microscope assembly between the low-power and high-power objectives and is suitable for more detailed viewing of tissues, cells, and sections. The housing is marked with a numerical aperture of 0.40 along with the specification 160/0.17, which indicates a tube length of 160 mm and a cover slip thickness of 0.17 mm. The achromatic corrected optics suppress chromatic fringes at the interface of light and dark areas of the specimen. It is a dry objective, so it is used without immersion oil, and air remains between the specimen and the lens. Before mounting, the conjugate distance of 185 mm is particularly important, as it verifies whether the objective matches the optics of the microscope.
- Medium Magnification 20x – in combination with the microscope eyepiece, it shows more details than low-power objectives while still providing a sufficiently wide view of the specimen for orientation in the sample, making it often switched to immediately after locating a site with a lower power objective.
- Aperture 0.40 – the value indicated directly on the objective after the slash, which together with the magnification serves for quick comparison with other objectives in the set.
- No Immersion – the objective operates dry, so after observation, the front lens only needs occasional dusting, and there is no need to remove oil residues or have special cleaning agents for immersion on hand.
- 160 mm Tube – the specification 160/0.17 on the housing determines the mechanical tube length, and specimens with a standard cover slip thickness of 0.17 mm can be used.
- Conjugate Distance 185 mm – a crucial parameter for selecting a replacement objective, which needs to be compared with the specifications of the microscope or with objectives that are already screwed into the revolving nosepiece and in use.
- Green Stripe – the coloured ring below the description helps quickly distinguish the 20x objective from others, and the black knurled part facilitates grip when screwing it into the nosepiece.
Contents of the package:
- 1x Achromatic 20x Objective
The 20x objective is a suitable choice for supplementing an assembly that lacks an intermediary step between low and high magnification. It is ideal for observing plant tissues, animal tissues, and unicellular organisms in water samples, i.e., specimens where it is necessary to see individual cells as well as their arrangement. The compact objective with a green stripe and achromatic correction is useful in school biology education, in natural science clubs, and for home study of specimens. When selecting, it is advisable to check whether the microscope uses optics with a tube length of 160 mm to ensure the objective matches the other components. After use, the objective should be stored clean and protected from dust, preferably together with other microscope accessories in a closed box, where there is no risk of scratching the front lens.
Seller: Alderin
Dispatched within 1 working day (Mon–Fri) – orders paid for by 14:00 Irish time are processed on the same working day.
Availability: In stock
Transit: 5–13 working days – transit takes place on working days (Mon–Fri).
In total, please allow 5–14 working days from payment of your order.
Delivery is only possible to addresses in Ireland.
Delivery to address: €1.59
Returns
Deadline: 30 days from receipt of the goods, without giving any reason
How: notify us of your withdrawal at info@lunzo.ie and send the goods by post to the returns address:
Rotonda Rene Descartes, Parcela 101 – Nave 3
28070 Alcala de Henares, Madrid
Spain
Once you have sent the parcel, send us the proof of dispatch with the tracking number to info@lunzo.ie – this lets us process your return as quickly as possible and refund you without waiting for the parcel to arrive.
Product condition: you can also return goods that have been used or unpacked, or that no longer have their original packaging or tags
Costs: you pay the postage for sending the goods back to Spain; we charge no return fee
Refund: within 14 days of receiving your notice of withdrawal; we may withhold the refund until the goods have arrived back or until you provide proof that you have sent them
Exchanges
Deadline: 30 days from receiving your parcel (exchange for a different size, colour or variant)
How: write to us at info@lunzo.ie, giving your order number and the variant you want – once we have checked that it is available, we will send you instructions for the exchange, including the address to which you should send the original item
Costs: you pay to send the original item back; the new variant will be sent to you at no further charge
Faulty or damaged goods
Period for claiming a fault: up to six years from delivery of the goods – within the first 30 days you can reject a faulty product and ask for a full refund, and for the first 12 months a fault is presumed to have been present on delivery
How: write to us at info@lunzo.ie and attach a photograph or a video of the goods – in most cases you do not have to send the goods back
Remedies: a replacement with a new item, a reasonable price reduction, or a refund of the full purchase price
You will find the details in Delivery and Payment, Returns and Exchanges, Faulty Goods.
Seller:
Shenzhen Thousandshores Technology Co., Ltd
Address: Room 1101, Building B, Lotus Plaza, No. 3186 Nanshan Avenue, Nanshan District, Shenzhen, China
E-mail: qianan@1000shores.cn
Telephone: +86 178 4108 8696
Manufacturer:
Shenzhen Thousandshores Technology Co., Ltd
Address: Room 1101, Building B, Lotus Plaza, No. 3186 Nanshan Avenue, Nanshan District, Shenzhen, China
E-mail: qianan@1000shores.cn
Telephone: +86 178 4108 8696
EU responsible person:
Thousandshores Deutschland GmbH
Address: Bredowstraße 17, 22113 Hamburg, Germany
E-mail: de-info@1000shores.com
Telephone: +49 40 55821900