Product Description

Long service life

Before calibration, thermal stress must be removed from the blank glassware. After calibration, specially developed quality printing inks are fired into the materials at approx. 500° C. This makes BLAUBRAND® volumetric instruments especially robust, so that they provide a long service life. In addition, this process ensures that BLAUBRAND® volumetric instruments can be heated up to 250° C in a drying cabinet or sterilizer without causing a permanent change in volume.

Adjustment and marking

Every glass volumetric instrument is individually calibrated. For measuring instruments with scales, such as graduated pipettes, burettes and graduated cylinders, flexible screen stencils are used. These stencils can be stretched to match the calibration marks accurately, so that the measuring precision is maintained for all intermediate volumes. Computer-controlled systems guarantee the best possible precision for fully automated production processes.

Error limits | Quality management

BRAND® manufactures glass volumetric instruments in accordance with current DIN EN ISO standards. Specified error limits are observed with at least 99.6% reliability (AQL ≤ 0.4). BRAND confirms the quality by providing batch certificates, individual certificates, or DAkkS accredited calibration certificates. Practical testing shows that the accuracy of our products frequently exceeds the specified error limits.

Reference temperature

The reference temperature 20°C applies to our volumetric instruments produced according to DIN EN ISO standards. If a volumetric instrument calibrated at 20°C is used at 27°C, the volume expansion of the material will lead to additional measurement deviation. The deviation rate is 0.007% for borosilicate glass 3.3 and 0.02% for soda-lime glass, both far smaller than the error limit of volumetric instruments. Therefore, the influence of reference temperature is negligible in practical applications. However, if adjustment or calibration is performed at a different temperature, the measured values must be corrected accordingly (see DIN EN ISO 4787).

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Product Parameters

Additional

Brand	Brand
Material	Borosilicate Glass 3.3
Type	Volumetric flask with SJ
Volume / Package size	50 ml

Model No.: 37288

Product Name: Volumetric flasks, BLAUBRAND®, Class A DE-M

Nominal Volume: 50 mL

Material: Borosilicate Glass 3.3 (DURAN® glass), clear transparent

Ground Joint: NS 14/23

Stopper: Glass ground stopper

Calibration: Calibrated to contain (TC / IN)

Error Limit: ±0.08 mL

Standard: DIN EN ISO 1042, DE-M conformity certification

Packaging: 2 pieces per pack

Reference Temperature: 20 °C

Origin: Made in Germany

Product Feature

The BLAUBRAND® volumetric flask 37288 is precision volumetric glassware manufactured by BRAND GMBH + CO KG, Germany. Designed for accurate volumetric preparation of standard solutions, titration work, HPLC & spectroscopic analysis in analytical laboratories.

Fabricated from high-quality Borosilicate Glass 3.3, featuring excellent chemical resistance and thermal stability. Before calibration, thermal stress is fully eliminated from blank glass bodies. After individual calibration, blue enamel scale markings are fired into the glass at approximately 500°C. The permanent fired printing resists abrasion and cleaning, and the flask can withstand heating up to 250°C in drying ovens or sterilizerswithout permanent volume deformation.

Every volumetric flask is individually calibrated by computer-controlled systems. AQL ≤ 0.4 means the error limits are satisfied with reliability ≥99.6%. Clear blue high-contrast ring mark enables precise visual reading. Equipped with NS14/23 ground glass stopper for tight sealing to prevent solvent volatilization.

Each flask is printed with batch identification and delivered with an official ISO batch certificate. Individual certificate or DAkkS accredited calibration certificate can be ordered separately for laboratories requiring high-level traceability.

Computer-controlled independent calibration
Class A DE-M certified, comply with DIN EN ISO 1042
±0.08 mL tolerance for 50 mL nominal volume
Scale marks fired at 500°C, scratch-resistant & long service life
Heat resistant up to 250°C, no permanent volume shift
Borosilicate 3.3 glass, excellent chemical inertness
Supplied with glass stopper (NS 14/23)
Delivered with batch certificate; DAkkS certificate optional

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BRAND 37288 BLAUBRAND Class A volumetric flask, 50mL, clear Boro 3.3 glass with NS14/23 glass stopper, DIN EN ISO 1042, calibrated to contain, for lab precise solution preparation.

Preparation and dilution of standard analytical solutions HPLC, UV-Vis spectroscopy, photometric testing Pharmaceutical, cosmetic, food & environmental testing labs Quantitative chemical analysis, titration experiments University research and quality control laboratories

Long service life

Adjustment and marking

Error limits | Quality management

Reference temperature