Tax incl. Tax excl.
  • New
500 ml spherical flask with 3 neck ground-glass 29/32

500ml Spherical Flask, Round Bottom, 3 Necks 29/32


500 ml round-bottomed flask with 3 parallel neck connections: 29/32 female standard ground-glass joint.
Spherical bottom glass vessel with long narrow neck.
Made of borosilicate glass ASTM E-438 Type 1, Boron 3.3 of the Glassco brand.
Compliant with DIN 12394 & USP standard.
The diameter of the balloon is 131 mm.
See data sheet for dimensions.

€43.44 Tax incl.
€35.90 Tax excl.
Spain 21% VAT; The final tax applicable may vary according to the country of destination.

500ml spherical flask with 3 parallel neck connections, 29/32

Instrument for distillation and boiling processes, for the uniform scalding of the substances contained in it, for sweeping substances, among other uses. Useful instrument to form a laboratory equipment that adapts to the need of the process to be done.
Made of borosilicate glass 3.3 of the Glassco brand.
White silkscreen with writing area.

General properties of borosilicate glass 3.3

This glass is distinguished by its very good chemical resistance to water, salt solutions, acids, bases and organic solvents. It is only attacked by hydrofluoric acid and, at high temperatures, by strong bases and phosphoric acid.

Chemical composition
80.00% Silica; SiO2
12.50% Boron trioxide; B2O3
2.40% of Aluminium oxide; Al2O3
3.80% of sodium oxide; Na2O
1.00% of potassium oxide; K2O
0.30% of iron oxide; Fe2O3

Chemical resistance
Hydrolytic according to DIN 12111 and ISO 719: Class 1
Acid-resistant according to DIN 12116: Class 1
Alkaline according to DIN 52322 and ISO 695: Class 2

Physical properties:
Coefficient of linear expansion: 3.3
Processing temperature: 534° C
Upper annealing temperature: 550° C
Lower annealing temperature: 494° C
Maximum working temperature: 500° C


Data sheet

Product Type
Spherical Flask, Round Bottom
500 ml
Borosilicate Glass
Neck Finish Recipient
Ground-Glass Neck
Inner diameter neck
29 mm
105 mm Ø
Standard Ground-Glass Joint
29/32 (3 outlets)
Rim Shape
Ground-Glass Joint
Neck Shape
Narrow Neck
Body Shape
Spherical Shaped
Bottom Shape
Round Bottom
175 mm
International Standards
DIN 12394 & USP standard
by Unit

This store asks you to accept cookies for performance, social media and advertising purposes. Social media and advertising cookies of third parties are used to offer you social media functionalities and personalized ads. Do you accept these cookies and the processing of personal data involved?

Necessary cookies
Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.
Cookie name Provider Purpose Expiry
PHP_SESSID This cookie is native to PHP and enables websites to store serialised state data. It is used to establish a user session and to pass state data via a temporary cookie, which is commonly referred to as a session cookie. Session
PrestaShop-# This cookie helps keep user sessions open while they are visiting a website, and help them make orders and many more operations such as: cookie add date, selected language, used currency, last product category visited, last seen products, client identification, name, first name, encrypted password, email linked to the account, shopping cart identification. 480 hours
Preference cookies
Preference cookies enable a website to remember information that changes the way the website behaves or looks, like your preferred language or the region that you are in.
Statistic cookies
Statistic cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously.
Content not available