Amscope 40X-2000X Binocular Koehler Microscope with achromatic corrections
Amscope 40X-2000X Binocular Koehler Microscope with achromatic corrections
Amscope 40X-2000X Binocular Koehler Microscope with achromatic corrections
Amscope 40X-2000X Binocular Koehler Microscope with achromatic corrections
Amscope 40X-2000X Binocular Koehler Microscope with achromatic corrections
Amscope 40X-2000X Binocular Koehler Microscope with achromatic corrections
Amscope 40X-2000X Binocular Koehler Microscope with achromatic corrections
Amscope 40X-2000X Binocular Koehler Microscope with achromatic corrections


$314.49 Buy It Now or Best Offer
free,30-Day Returns





Seller Store amscope
(81561) 98.7%,

Location: Irvine, California, United States
Ships to: US,
Item: 404177190003

Condition:New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is … Read moreabout the conditionNew: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller’s listing for full details. See all condition definitionsopens in a new window or tab
Microscope Structure:Upright
AmScope:AmScope
Warranty:5 Year Warranty
Microscope Type:Compound Microscope
Magnification Range:40X-2000X
Custom Bundle:No
B690B:B690B
Stage:3D Double Layer Mechanical Stage
MPN:B690B
Viewer:Binocular
Modified Item:No
UPC:Does not apply

eBay

Amscope 40X-2000X
Binocular Koehler Compound Microscope

Sku: B690B

Key Features

  • 40X to 2000X magnification range using high-quality
    achromatic objective lenses. 10X and 20X eyepieces provide 8 unique
    magnification settings.
  • The infinity-corrected optical system reduces
    distortion and improves color accuracy.
  • Achromatic color-corrected lenses produce
    high-resolution, high-contrast images.
  • The Koehler illumination system
    provides centered, evenly-distributed lighting with a field aperture for
    maximum contrast and definition.

The
B690 is designed for professional biological applications. Its
infinity-corrected optical system ensures reliable, low-distortion
magnification, with achromatic corrections for accurate colors and improved
sharpness. The halogen illumination system provides low-fatigue,
evenly-distributed light for maximum contrast and definition. This model is a
popular choice for veterinarians and university laboratories.

To
customize the microscope to your viewing comfort, the eyepiece spacing can be
easily adjusted using a precision Siedentopf mechanism. A diopter is available
on the left ocular tube to compensate for asymmetry, and the ocular tubes are
angled at 30° to comfortably accommodate a seated position without neck strain.

The
objective turret provides instant access to 4 magnification levels to easily
focus in on minute details from 40X to 1000X. Additional 20X eyepieces expand
the maximum magnification to 2000X with 8 unique levels. This covers
magnifications needed for studying hair follicles, cells, soil, and bacteria.
The turret’s reversed orientation provides more working room above the stage.
These high-quality lenses are achromatically corrected to improve resolution
and color accuracy.

The
large 2-layer mechanical stage provides smooth and precise movement for
examination of specimen slides. The stage’s low-position controls are
conveniently placed near the coaxial focus knobs for a streamlined workflow.
Examining specimen slides is intuitive and precise for users at any skill
level.

Built
on Koehler illumination principals, the sub-stage lighting provides
evenly-distributed light for optimal contrast. The halogen light-source
provides bright illumination with a lower color-temperature for decreased
fatigue when used for long periods. The Abbe light condenser has a high 1.25
numerical aperture for oil-immersion, and an iris diaphragm to optimize
contrast and depth-of-field. The condenser holder uses rack-and-pinion height
adjustment for precision control, and is centerable for proper alignment. The
illuminator’s field lens provides an iris diaphragm to control light-spread,
optimizing contrast and definition in specimen features.

 

Specifications

Optical System

Infinite-conjugate

Head

Binocular, 30° incline, 360°
rotatable

Interpupillary Adjustment

Siedentopf compensation-free
gemel, 55-75mm

Ocular Diameter

30mm

Ocular Diopters

left ocular

Eyepieces

10X, 20X

Objective Lenses

Infinity-corrected

Objective Parfocal Distance

45mm

Objective Mounting Thread

RMS 20.32mm

Objective Turret

Reverse quadruple, ball-bearing
movement

Focusing System

Coaxial coarse and fine focus,
tension control

Division of Fine Focus

0.002mm

Stage Design

Double-layer with caliper

Stage Dimensions

180mm x 150mm

X-Y Translation Range

75mm x 50mm

Transmitted Illumination

12V/20W halogen

Condenser

NA1.25 Abbe condenser with iris
diaphragm

Sub-stage Condenser-holder

rack and pinion

Power

85-230VAC 50/60Hz wide-band

 

Objective Lenses

Magnification

Corrections

NA

Immersion
Medium

Cover-glass
Thickness

4X

achromatic

0.10

0.17mm

10X

achromatic

0.25

0.17mm

40X

achromatic

0.65

0.17mm

100X

achromatic

1.25

oil

0.17mm

Packing List:

  • One binocular head
  • One microscope body
  • Four objective lenses: 4X, 10X, 40X,
    100X
  • One pair 10X eyepieces
  • One pair 20X eyepieces
  • Three color filters
  • One spare halogen bulb
  • One spare fuse
  • One power cord (US and Canada
    standard)
  • One dust cover
  • One sample
    immersion oil

 

Shipping & Handling:

  • FREE Shipping to Contiguous USA (the lower 48 States)
  •   

    Return Policy

    We offer 30 days from the date of receipt (verified by tracking information) to request a return on a unit. To do so, please send us a message through eBay member to member messages, with your reason for return, requesting an RMA number.

    Refunds for nondefective items requested within 30 days of receipt are less our 20% restocking fee.

    Note that shipping costs are borne by the customer. Returns requested after 30 days are not valid, and any returns sent without an RMA number will be returned to sender at the sender’s expense. Also, please insure all items shipped back, as damage to items by the courier during the return shipment to us are not covered otherwise.

    Please keep all original packing materials, as they are required for return (or an additional 10% restocking fee will also be charged). Returned items must be in new/usable condition unless defective on arrival to you.

    Warranty Information

    We, AmScope, provide all warranty services. Please feel free to contact us whenever you need help by messaging us from the store you purchased the product from.

    • Five Year Warranty for Microscopes – All our microscopes come with a five (5) year factory warranty against manufacturing defects, covering labor and parts.
    • One Year Warranty for Accessories – All our microscope accessories (USB cameras, illuminators, illumination, dust covers, and etc.) come with a one (1) year warranty.

    Note: Buyers bear the cost of shipping and handling cost round trip for warranty services. Warranty does not cover consumable accessories and parts such as bulbs.

    Warranty service times vary throughout the year, and are processed in a first come, first serve manner, when parts are available and in stock. Most repairs/replacements are done within 1-2 weeks, however if there is a long line during the busy season, or if your parts need to be ordered from our manufacturer, processing times can be up to 6-8 weeks. We appreciate your patience and understand everyone has a critical need for their unit, and do everything we can to ensure that these requests are handled as quickly as possible.

    Nondefective Items

    Refunds for nondefective items in resalable condition requested within 30 days of receipt are less our 20% restocking fee.

    Also note that return shipping costs are the responsibility of the buyer.

    Returns requested after 30 days are not accepted, and any returns sent without an RMA number will be returned to sender at the sender’s expense.

    Please insure all items shipped back, as an item received back to us with damage will be returned to sender to file a claim with the courier. Items damaged in transit are not covered by us.

    Please keep all original packing materials, as they are required for return (or a restocking fee will also be charged). Returned items must be in new/usable condition unless when received back.

    Defective/Missing Items

    For defective items or any missing items from your order, please contact us right away to let us know of the issue.

    We only allow the 30 day period (from the date of receipt of the item in the mail) to report such issues–any items missing after that time frame will need to be purchased, and any defective items will be treated as warranty issues for repair or replacement only (no returns for refund).

    For missing items and broken items, we do require a picture of the shipping label on the box, and of the items that arrived with your unit for verification before we can send any missing items or replacements to you.

    Return Procedure

    To initiate an RMA, please send us a message through the store you purchased it from. Include your order number, reason for return, and if any pictures are required for your claim, please include them also.

    From there, we will process within 24-72 hours, and if approved, issue you an RMA number and instructions on where to mail your unit back to. If qualifying for return shipping covered by us (for defective items within 30 days of receipt), your return label may take another 24-48 hours to process and be received in your email inbox.

    Follow the issued instructions, and once received, we will process the item in, and check to ensure everything is there. We will contact you when the item is ready for return shipping (if a warranty request), or simply issue your refund with the appropriate deductions (if any) once processed.

    Processing is done first come, first serve, and can take between 1-4 weeks to process (depending on how many requests we currently have in queue). We thank you for your patience while we work on your request.

     

    Shipping & Handling (Important Expedited Shipping Info!)

    All orders ship within 1 business day from our Southern California warehouse

    Domestic US (contiguous 48 states)

    • Free Ground (4-5 bus. days)
    • Calculated Expedited (2-Day Shipping!) (eBay does not show accurate handling times for this service.)

    Alaska, Hawaii, Puerto Rico

    • Calculated Expedited (2-3 Bus. Days)

    International

    • Calculated via eBay GSP
      (VAT and Customs fees included)

    Have Questions? Click “Contact Seller” above!

    Our expert California-based support team is available M-F 6am PST to 5pm PST and can be reached via phone or eBay messages.

    We are more than happy to help you find the right product for you or answer questions about an order you’ve already placed.

    30 Day Returns

    If you no longer need the item
    Please open an eBay Return request within 30 days of receipt.  You will be responsible for return shipping charges.

    But if there is a problem with the item
    Please contact our support team FIRST!  80% of the time, the problem can be resolved within a few messages.

    If a solution cannot be found, please open an eBay Return request within 30 days of receipt.

    Return Notes

    • Returns not processed through eBay Returns will be returned to sender
    • Returns must include all original items or else a restocking fee may be applied.
    • All returns will be inspected per the buyer’s return reason.  A 10% restocking fee will be applied if the complaint is invalid.
    • eBay Returns cannot be opened after 30 days.  However, the item may be eligible for a warranty claim (see below)

    Warranty

    We, AmScope, provide all warranty services including repairs and replacements.

    • 5 Year Warranty for all complete Microscopes – Against manufacturing defects, covering labor and parts.
    • 1 Year Warranty for Accessories and sold-separate microscope parts – (USB cameras, lighting, articulating arms, stands, objective lens, stages, etc).
    • No warranty for consumable accessories such as bulbs, slides, or hand tools

    To start a Warranty claim, please contact us through eBay Messages to obtain a claim number.  Buyer will be responsible for return shipping.

    Once received, most claims are processed within 1-2 weeks, stock permitting.  Once processed, please allow 1-2 weeks for delivery of repaired/replaced unit

    About AmScope

    Since 1998, America’s doctors, researchers, educators, forensic scientists, and electronic designers have trusted AmScope to deliver high quality microscope solutions for their precision educational and research needs.

    Our products are manufactured under strict ISO 9001 quality control standards, and are made by the same technicians that make much more expensive Zeiss, Leica, Nikon, and Olympus.

    By designing, manufacturing, and distributing our own AmScope brand microscopes and accessories, we keep products affordable while maintaining quality precision.

    With over 500 models in stock, we are confident that we can meet your microscope needs whether you’re a hobbyist, an educator, or an advanced research institution.

    Our goal is to assist great minds in reaching that “Eureka” moment.  Our promise: When you use AmScope, you’ll see things bigger!


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