SKU: 42127751382

Heathrow Scientific 2303A-25 Volumetric Flask, Class A, Snap-Cap, 25 mL, 6/pk

$57.79 $64.21
Save 10%
No.2 Bestseller on sm10m.ch >

Pay in installments of $16.05 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 26 - Oct 1

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Heathrow Scientific 2303A-25 Volumetric Flask, Class A, Snap-Cap, 25 mL, 6/pkThese volumetric flasks feature machine blown bodies and heavy beaded, heavy tubing necks that are tooled for snap cap fit. Our volumetric flasks are constructed of premium borosilicate glass, ensuring exceptional clarity and resistance to chemical interactions. Each flask is supplied with a snap cap which helps protect against breakage and spills. Features: Made of premium borosilicate glass with a low coefficient of expansion Designed to contain

These volumetric flasks feature machine-blown bodies and heavy-beaded, heavy-tubing necks that are tooled for snap-cap fit. Our volumetric flasks are constructed of premium borosilicate glass, ensuring exceptional clarity and resistance to chemical interactions. Each flask is supplied with a snap cap which helps protect against breakage and spills.

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 snap cap
Wide range of sizes available (10 mL to 1000 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: 42127751382

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 23 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
H
Verified Purchase
HA
Battle Creek, US
★★★★★ 5
Worth it!
Size: Queen(Pack of 2)
These pillows are amazing and very soft and comfortable. They came nicely packaged and I let them sit out for just a few hours before using them and that was plenty of time! They come with the cooling cover and fit a standard queen sized pillowcase. The material expands well and does not have any weird smells. 10/10 well worth the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
B
Verified Purchase
Bridgette Rose
Grantham, US
★★★★★ 5
Miracle pillow
Size: Standard(Pack of 2)
Best pillow I’ve ever had. I have been using this since December 2024 and it still hasn’t gotten flat. It is amazingly comfortable and solves all my neck issues for a side sleeper. My head never gets hot either. I’ve recommended this to my friends and they’ve had success with it as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
K
Verified Purchase
Kindle Customer
Omaha, US
★★★★★ 4
Really wanted to love these
Size: Queen(Pack of 2)
I really wanted to love these but they gave me a stiff neck. I haven't slept with a pillow since buying these. They are firm except where you lay your head. It just deflates there. I expected it to sink in to match the curve of my neck but it was more than I could handle. My head ended up in a valley between the two ends of the pillow. The price was good, zipper worked fine, it looks as advertised and the pillows are good quality. The cooling part works, its just not what I needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
J
Verified Purchase
Jack Raines
Natrona Heights, US
★★★★★ 5
best pillow I have ever bought.
Size: Queen(Pack of 2)
most comfortable pillow I have ever bought. It seems very well put together so I believe that it will last a long time. Very happy with the purchase. I do think the weight of the pillow will surprise many people because while it is quite heavy, it is very firm and extremely comfortable. Great value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
R
Verified Purchase
RC
Cuba, US
★★★★★ 5
I paid for the product and it’s GOOD 👍🏽
Size: Queen(Pack of 2), Size: Queen(Pack of 2)
Honest review to help your decision. These are a bargain at two for one. I paid almost $30 for one at a local retailer and it’s already flattened after 7 months. This product arrives vacuum sealed with the cooling pillow covers separately (separate so you can wash before using). They are loaded with memory foam which I found pleasing. I chose to leave all of the foam in because I’m sure it’ll flatten sometime in the future. I’ve been using these for TWO MONTHS now and they have not flattened. Easy to mold and fluff, soft and they are added support for my back up pillows. I cannot attest to any type of pain relief because I have not experienced that with these personally. I do feel my sleep is better so my tension headaches have lessened. The cooling hex layer is on the cover NOT the actual pillows. I’m sure everyone knows that memory foam gets really hot 🥵 but the cooling covers on these help minimize that. It actually feels cool to the touch like a gel product. I find the quality to be exceptional. All in all, give it a shot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 16, 2025

recommand products

Carnelian Beaded Stretch Bracelet
32.00
Pyrite wire wrapped necklace
22.00
Cuff with etched Gingko leaf
66.00
Rainbow Aura Quartz wire wrapped necklace
29.00
Dalmatian Jasper Beaded Stretch Bracelet
34.00