Borosilicate Glass Filtering Flasks – Premium Quality for Laboratory Applications

Our borosilicate glass filtering flasks are engineered to deliver exceptional strength, durability, and reliability in the most demanding laboratory environments.

Manufactured from Class A borosilicate glass 3.3 with a low coefficient of thermal expansion, these flasks fully comply with ASTM E438, Type 1 standards. The high-purity, low-alkali composition ensures excellent chemical and thermal resistance, even under intensive use.

Each flask features:

• 🔹 Thick, reinforced walls for maximum strength and durability

• 🔹 Bolt-type neck with side arm tubing for secure and leak-free connections

• 🔹 Precision graduations in durable white enamel for long-lasting readability

• 🔹 Optimized chemical composition: approximately 81% silica, 13% boron oxide, 4% sodium oxide, and 2% aluminum oxide

• 🔹 Free from magnesia, lime, and zinc, containing only trace amounts of heavy metals for superior purity

Key Benefits:
✅ Outstanding thermal shock resistance
✅ Superior chemical stability
✅ Safe, ergonomic design
✅ Ideal for vacuum or pressure filtration

Combine performance, safety, and long-lasting reliability with our borosilicate glass filtering flasks – the preferred choice of professionals who demand excellence.