SKU: 6238367092

Heathrow Scientific 2306A-1000 Volumetric Flask, Class A, Glass Stopper, 1000 mL, 2/pk

Sale price$68.09 Regular price$75.65
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

Heathrow Scientific 2306A-1000 Volumetric Flask, Class A, Glass Stopper, 1000 mL, 2/pkThese volumetric flasks feature machine blown bodies and heavy beaded, heavy tubing necks that are tooled for standard taper glass stoppers. Our flasks are constructed of premium borosilicate glass, ensuring exceptional clarity and resistance to chemical interactions. Each volumetric flask is supplied with a standard taper glass stopper which provides a leakproof seal. This airtight seal not only preserves the integrity of your samples but also

These volumetric flasks feature machine-blown bodies and heavy-beaded, heavy-tubing necks that are tooled for standard taper glass stoppers. Our flasks are constructed of premium borosilicate glass, ensuring exceptional clarity and resistance to chemical interactions. Each volumetric flask is supplied with a standard taper glass stopper which provides a leakproof seal. This airtight seal not only preserves the integrity of your samples but also enhances the reliability of your volumetric measurements.

Features:
Made of premium borosilicate glass with a low coefficient of expansion
Designed “to contain” with a temperature of calibration at 68°F (20°C)
The graduation line is sharply defined and of uniform width
Each flask has a large marking square and includes a glass stopper
Wide range of sizes available (5 mL to 2000 mL)
Meets ASTM E-288 Class A specifications & USP standards for glassware

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 6238367092

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4.3 ★★★★★
Based on 1065 reviews
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Verified Purchase
Vivian
Pawtucket, US
★★★★★ 5
Love it.
Color: Bunny (Beige), Size: Large
Good quality and well worth the price. My dog loves it. The squeaky part is fun, and the crinkly, tear-resistant paper in the ears makes playtime even more exciting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
F
Verified Purchase
frugal shopper
Whiting, US
★★★★★ 5
Great for my aggressive chewers
Size: 1 Count (Pack of 1), Size: 1 Count (Pack of 1)
Wears my Labs out. Fred the yellow lab chooses this pig ear over all his nyla and natural chews out of the toy box all the time. This is the 4th one in his 6 years. They have lasted long and when new are large enough I don’t have to worry about choking. As they get down in size I throw them just as a precaution. The only con I can think of is Fred loves to slam it down on the pergola floor which makes for a very loud clacky sound and it scares the $%^ out of me. He of course thinks it’s funny so he picks it up and continues to do it. As long as he and his brother Willie can chew I will always have these in their toy box.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2024
D
Verified Purchase
Debra
Fort Morgan, US
★★★★★ 5
Good for strong chewers
Size: 1 Count (Pack of 1)
Great chew for for my GSDs! They last quite a while too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 4, 2025
S
Verified Purchase
Shopper X
Charlottesville, US
★★★★★ 5
Great chew toy for large, tough chewers
Size: 1 Count (Pack of 1)
My dog is a heavy, strong chewer over 100 lbs who will chew this for an hour. It lasts, keeps him occupied and the smell isn’t terrible. Love the large size for a larger dog. Great buy.
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Reviewed in the United States on April 1, 2026
J
Verified Purchase
Janece Pool
Chelsea, US
★★★★★ 5
Awesome bone for all dogs!
Size: 1 Count (Pack of 1), Size: 1 Count (Pack of 1)
My dogs LOVE this pig ear! It is very lightweight and easy for any dog, from my Great Dane to my Maltipoo, to carry and chew on. It has no odor, yet the dogs were interested immediately after smelling it. The pig ear is perfect for every dog in our household and keeps them busy for hours. Since it is curved, it is easy for them to hold on to and to pick up. We have had this bone for a few weeks, and it has lasted through our little dogs, fosters, and Great Dane! The bone is very durable, and based on the previous bones we’ve gotten from Pet Qwerks, I’m guessing it’s going to last quite a while! I recommend this to anyone wanting a long-lasting bone for their pups, especially those tough chewers!
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Reviewed in the United States on September 10, 2018

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