PYREX 50mL Class A Buret with PTFE Stopcock

The PYREX 2103-50 50mL Class A Buret is high-accuracy volumetric laboratory glassware designed for precise measurement and controlled dispensing of liquids during titration quantitative analysis solution standardization and other analytical procedures. Its 50mL capacity with 0.1mL graduation intervals and ±0.05mL Class A tolerance provides the precision required for routine analytical chemistry work. The permanently colored scale incorporates fine graduation lines and easy-to-read numbering to facilitate accurate meniscus readings. The buret uses a 2mm PTFE stopcock plug for smooth control of liquid flow. The PTFE design eliminates the need for conventional stopcock lubricant and helps reduce problems associated with lubricant contamination. Corning states that the buret's Class A capacity tolerances conform to ASTM E-287 and that calibration is performed in accordance with ASTM E-542. Key Features Genuine Corning PYREX® Catalog number 2103-50 50mL nominal capacity Class A volumetric accuracy Fine 0.1mL graduation interval ±0.05mL tolerance Permanently colored scale Fine graduation lines for accurate reading Large easy-to-read numbering 2mm PTFE stopcock plug Micro-finished stopcock barrel PTFE closure requires no conventional stopcock grease Carefully formed dispensing tip Supplied with dust cover Replacement PTFE stopcock plug 7681-2 Suitable for precision titration and quantitative analysis Specification Details Brand PYREX® Manufacturer Corning Catalog Number / MPN 2103-50 Product Type Class A Laboratory Buret Capacity 50mL Accuracy Class A Scale Permanently Colored Graduation Interval 0.1mL Tolerance ±0.05mL Stopcock Material PTFE Stopcock Bore 2mm Approx. Outside Diameter 14mm Approx. Height 755mm Calibration Standard ASTM E-542 Capacity Tolerance Standard ASTM E-287 Replacement Stopcock Plug 7681-2 Supplied Accessory Dust Cover Reusable Yes