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Pycnometers(Gay Lussac Calibrated Class-A)


A Pycnometer (Gay Lussac Calibrated Class-A) is a highly accurate laboratory tool used to determine the density or specific gravity of liquids. Its Class-A calibration ensures it meets international standards for precise and reproducible measurements.

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A Gay-Lussac Pycnometer (Calibrated Class A) is a high-precision volumetric glassware item used to determine the density or specific gravity of liquids with exceptional accuracy. This type of pycnometer is named after Joseph Louis Gay-Lussac, and is distinguished by its fixed-volume design and calibrated ground glass stopper with a fine capillary hole that allows excess liquid to escape for exact volume measurement. Made from borosilicate glass and calibrated to Class A tolerances, Gay-Lussac pycnometers are ideal for analytical chemistry, quality control, and pharmaceutical testing, where traceable and repeatable density measurements are critical. Each pycnometer is individually calibrated at a reference temperature (typically 20°C) and may include serial numbers and certificates of calibration for regulatory compliance.

Technical Specification of Pycnometers(Gay Lussac Calibrated Class-A)

  • Material:

    • Borosilicate glass 3.3 (chemically and thermally resistant)

  • Design:

    • Cylindrical or pear-shaped body

    • Narrow neck with a precision-ground glass stopper

    • Stopper features a fine capillary bore to allow excess fluid egress

  • Volume Range: Commonly available in 1 mL, 5 mL, 10 mL, 25 mL, 50 mL, and 100 mL

  • Class: Calibrated to Class A standards (high accuracy)

  • Calibration Temperature: Typically 20°C (can vary by region or custom spec)

  • Graduation/Marking:

    • Individually marked with exact volume

    • Some include serial numbers and come with calibration certificates

  • Stopper: Matching ground-glass stopper with overflow capillary

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