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  • American Educational Connecting Kjeldahl Bulb with Stopper for Distilling Apparatus, 50mm Bulb Diameter
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American Educational Connecting Kjeldahl Bulb with Stopper for Distilling Apparatus, 50mm Bulb Diameter

10 customer reviews

List Price: $11.95
Price: $11.84 & FREE Shipping on orders over $35. Details
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Specifications for this item
Brand Name American Educational Products
Part Number 7-400-2-B-1-A
Number of Items 1
Outside Diameter 50  mm
UNSPSC Code 41104820

It is kjeldahl connecting bulb. Comes in 50 millimeter diameter. Read full product description


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Product Features

  • Connecting Kjeldahl bulb
  • 50 millimeter diameter
  • Comes with stopper
  • For distilling apparatus
  • Pack of 1

Product Details

  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B00657LR5O
  • Item model number: 7-400-2-B-1-A
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (10 customer reviews)
  • Amazon Best Sellers Rank: #4,037 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
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Frequently Bought Together

American Educational Connecting Kjeldahl Bulb with Stopper for Distilling Apparatus, 50mm Bulb Diameter + American Educational  7-771000 Clear Borosilicate Glass 1000mL Flat Bomex Bottom Boiling Flask
Price for both: $28.54

Buy the selected items together

Product Description

It is kjeldahl connecting bulb. Comes in 50 millimeter diameter.


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

10 of 11 people found the following review helpful By P on September 24, 2012
I ordered the product and received it MONTHS later. Beyond that, when i received the product, it has hairline fractures, and the number 6 stopper is wedged backwards on the bottom, redering it useless until i can get the stopper off, which is very difficult to do because the class is thin and flimsy.
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2 of 2 people found the following review helpful By Michael P. Tresca on June 2, 2013
Verified Purchase
The stopper fits perfectly into my boiling flask and condenser and works well with my distillation experiments. Thank you again
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1 of 1 people found the following review helpful By Elementcollector1 on September 23, 2013
Verified Purchase
This piece of glass works for it's intended purpose, but mine broke the lower tube off in storage. Pretty fragile little thing. Since then, I got a ground-glass kit, so I don't really need this anymore.
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Verified Purchase
The tubing is skinny and fairly thin, so you certainly have to be careful with it. Also, it is not high throughput by any means - if you are boiling in a large container this bulb may allow the pressure to rise more than you'd like.

Normally I would give this 4 stars. However, on my third distillation run using this bulb I discovered that the output was fluorescing green! After quite a bit of investigation I discovered that the output stopper on my bulb had a potent fluorescent dye on it (probably fluorescein), and it was visible on the inside of the bubble wrap it came in using a UV light (it was entirely invisible in regular light). Hopefully this was a one-time thing (someone returned this particular bulb, or the person packaging it handled a leaking package of dye beforehand), and not something that is a recurring issue. Either way, since it shipped with an invisible contaminant that was not sufficiently removed with an initial rinse I'm docking it a star.
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1 of 1 people found the following review helpful By Mosaicdog on July 14, 2014
Purchased for high school student who used to make projects. Quality item that was used often.
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