Kjeldahl Flask, 300mL - Long Neck, Round Bottom - Borosilicate Glass

Name: Kjeldahl Flask, 300mL - Long Neck, Round Bottom - Borosilicate Glass
Brand: Eisco Labs
SKU: CH0438B
Price: 21.09 USD
Availability: InStock

SKU CH0438B

by Eisco Labs

In Stock - 16 Available

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Description

Designed for nitrogen determination as per Kjeldahl method
Made of high quality Borosilicate glass
300mL capacity
Rounded Base
Conforms to DIN ISO 12360 standard

Kjeldahl Flask has a long neck, round bottom, and is made from industrial quality borosilicate 3.3 glass. Designed for nitrogen determination as per Kjeldahl method. Conforms to DIN ISO 12360 standard. Flask measures 11.8" tall, neck measures 8" long and has a diameter of 1.2", round bottom diameter measures 3".

Autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point 515Â°C | Annealing Point 565Â°C | Softening Point 820Â°C.

Material Info

Thermal Properties

Strain Point: 515°C
Annealing Point: 565°C
Softening Point: 820°C
Coefficient of Linear Expansion: 32.5 x 10^-7 / °C
Specific Heat: 0.2
Thermal Conductivity (Cal/cm³°C/Sec): 0.0027

Chemical Durability - Contact

Water distilled at 100°C: 6 hours - 10 mg/m² lost
Water vapour steam at 121°C: 1 hour - 75 mg/m² lost
Acid HCl: 6 hours - 100 mg/m² lost
80% H₂SO₄at 130°C: 12 hours - 140 mg/m² lost
Alkali -1N solution of Na₂CO₃boiling: 6 hours - 4000 mg/m² lost

Chemical Durability - Isotonic Infusion Fluids

NaCl (0.85%) at 121°C: 2.5 hours - 70 mg/m² lost
Glucose (5%) at 121°C: 2.5 hours - 50 mg/m² lost

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About Eisco Labs

Started over 50 years ago as a small, family-owned manufacturing company, Eisco now produces over 6,500 product lines for the science education and scientific research markets. They have headquarters in both India and the US, and serve hundreds of distributors around the world.

Their core products include glassware, physics apparatus, biology models & equipment, and chemistry lab supplies. Products are designed by a team of laboratory professionals and engineers with quality and durability in mind.