SKU: 20974853746

Konus 4x Achromatic Objective Lens (Replacement Part)

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Description

Konus 4x Achromatic Objective Lens (Replacement Part)For the Academy, Campus, & College Microscopes The Konus #5250 4x Achromatic Objective Lens fits the Academy, Campus, and College series microscopes.You simply unscrew one of the existing objectives and replace it with this 4x objective.Though 4x is supplied on the microscopes listed, it is easy to accidentally collide with the specimen and damage the objective. The 4x provides lower magnification, wider field viewing of specimens.It is best suited to

  • For the Academy, Campus, & College Microscopes

The Konus #5250 4x Achromatic Objective Lens fits the Academy, Campus, and College series microscopes.��You simply unscrew one of the existing objectives and replace it with this 4x objective.��Though 4x is supplied on the microscopes listed, it is easy to accidentally collide with the specimen and damage the objective.

The 4x provides lower-magnification, wider-field viewing of specimens.��It is best suited to studying a large portion of a slide.��At such lower effective magnification, it isn't necessary to involve the expense and extra glass of apochromatic lens design.

Provides reduced magnification and widest possible viewing field
In the Box
Konus 4x Achromatic Objective Lens (Replacement Part)
  • 1-Year Limited Warranty
Packaging Info
Package Weight 0.15 lb
Box Dimensions (LxWxH) 2.3 x 1.2 x 1.0"
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SKU: 20974853746

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4.8 ★★★★★
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Randy Brock
Omaha, US
★★★★★ 3
Fun for the first day, but just get the round balls.
Color: Green, Size: Medium (2-1/2 in (Pack of 2))
These balls do work, but they bouncy pretty much like a regular chuck it ball. They do NOT fit in the chuck it handheld ball launcher, which makes them a pain to throw. The green color also makes them somewhat challenging to find when the grass is long. That said, they do work as intended, and the dogs like them the same as all the other chuck it balls we own. As the person who had to throw them, my advice would be to just get the round balls that fit in the ball launcher. Durability: 9/10 they hood together better than the traditional balls without the hole (that crack down the seam over time). These have yet to crack despite the same wear and tear. Pros: durable, dogs like them, they do sink in water Cons: green color, hard to fit in handheld ball launcher
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Reviewed in the United States on June 3, 2023
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Verified Purchase
Shopaholic
Dallas, US
★★★★★ 5
Winner!
Color: Green, Size: Medium (2-1/2 in (Pack of 2))
I recently got the BOUNCY DOG BALL TOY for my fur baby, and I'm thrilled to say that it's a total winner! The best feature of this interactive dog toy is its erratic bounce, which keeps my pup on their toes and makes every playtime session full of surprises. The squared corners of the ball cause it to bounce every which way when thrown, making it an exciting challenge for my dog to catch. And because it's compatible with the Chuckit! Ball Launchers, we can play fetch for hours on end without ever getting bored. One thing I love about this fetch toy is its durability. It's made of tough rubber that can withstand even the most aggressive chewers, and it's super easy to clean after a long day of play. Plus, with two balls included, we always have a backup when one inevitably gets lost.
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Reviewed in the United States on February 24, 2023
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Robin S.
Alexandria, US
★★★★★ 5
These bowls are worth getting
Very good value, packed well good quality, very durable, fast shipping.
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Reviewed in the United States on April 29, 2026
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DL Frazelle
Los Angeles, US
★★★★★ 5
Great disposable bowl for pets
I feed my Savannah Cat raw food and use these disposable bowls for hygienic reasons. They are sturdier than paper bowls and he doesn’t chew on these plastic bowls like he does with paper bowls. 12 Oz is a perfect size, and they are a great value for the money.
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Reviewed in the United States on December 29, 2025
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Sandy E.
New York, US
★★★★★ 4
Adequate
These for my cat’s raised bamboo feeder perfectly. They are a a little thin and stick together a bit but fit my needs.
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Reviewed in the United States on May 3, 2026

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