Certified Class A flasks meet error limits of USP.

• Amber colored for light protection
• Individually adjusted
• Durable, highly legible white line for easy adjustment and maximum precision
• Annealed for volume stability
• Boro 3.3 glass

BRAND® BLAUBRAND® volumetric flasks are certified Class A and constructed to DIN EN ISO standards of Boro 3.3 glass. They meet the error limits of USP/ASTM, and are amber colored for light protection. Each piece is individually adjusted, and marked with a highly legible white line for easy adjustment and maximum precison. High quality inks are baked on during an annealing process that relieves thermal stresses. This provides volume stability even after heating up to 250 °F. Statistical process control ensures compliance with predefined specifications of at least 99.6%. Calibrated to contain (TC, In). Made in BRAND's Wertheim Germany facility.