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BLAUBRAND® quality

Volumetric instruments

BLAUBRAND® volumetric instruments provide a high degree of technical perfection.

They are made of glass that is highly resistant to nearly all chemical substances – an essential prerequisite for durable precision. A statistical process control ensures strict compliance with predefined limit values. The intended application determines which measuring instrument should be used. Precision analyses require measuring instruments with consistently high precision. Even the most sophisticated automated systems will only deliver reliable results if the volumetric instruments used in preparing the samples meet the required precision.

 

All reusable BLAUBRAND® volumetric instruments are supplied with one batch certificate per packing unit as standard.

BLAUBRAND® quality

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Graduation/calibration

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Class A/AS:

Graduation with ring marks at main graduations

Class A/AS volumetric instruments are within the error limits defined by DIN and ISO and are marked with DE-M.

 

BLAUBRAND®

Ring marks and inscriptions in high contrast blue enamel. It combines resistance and readability to optimum effect.

 

BLAUBRAND® ETERNA

Ring marks and inscriptions in brown ETERNA diffusion dye. It diffuses into the glass surface and can only be removed by abrasion. It is used for volumetric instruments which are subjected to particularly aggressive cleaning methods.

Class B:

Graduation with short lines at main graduations

Class B volumetric instruments are within twice the error limits of Class A/AS as defined by DIN and ISO.

 

SILBERBRAND

Ring marks and inscriptions in high contrast white enamel.

 

SILBERBRAND ETERNA

Ring marks and inscriptions in brown ETERNA diffusion dye. Particularly durable, e.g. resistant against aggressive cleaning methods.

Scale

Calibration

Every glass volumetric instrument is individually calibrated. Computer-controlled systems ensure maximum precision in fully-automated production processes.

 

Statistical Process Control (SPC) guarantees production of volumetric instruments with the smallest deviation from nominal capacity (accuracy) and narrow scatter of individual values (coefficient of variation).

 

Calibration types

 

'In':

The contained quantity of liquid corresponds exactly to the volume indicated on the instrument (e. g., graduated cylinders and volumetric flasks).

 

'Ex':

The delivered quantity of liquid corresponds exactly to the volume indicated on the instrument (e. g., pipettes and burettes).

BLAUBRAND® features

Printing
Printing is carried out using the silk-screen method. BRAND uses flexible screen stencils for all graduated pipettes, burettes, graduated cylinders and mixing cylinders. The volume markings on the stencil exactly match the calibration marks, at all capacities. As a result, even intermediate volumes on BRAND volumetric instruments are extremely precise. For the silk-screen printing, BRAND uses special inks designed for volumetric instruments.
Firing
Apart from using quality inks, a carefully regulated firing process, i.e. controlled heating and cooling, is required for durable graduations. The maximum temperature is between 400 and 550 °C, depending on the glass type. BRAND uses the latest production technology for this important process step too.
Quality assurance, AQL ≤ 0.4
The QM system used is DIN ISO 9001 certified. It combines ongoing testing during the production process with final random sample testing in accordance with DIN ISO 3951 at final inspection. The maximum accepted quality level (AQL) is 0.4.
Heating volumetric instruments
All reusable BLAUBRAND® and SILBERBRAND volumetric instruments can be heated up to 180 °C in a dry box or sterilizer without having to worry about a change in volume. Use only gradual heating and cooling because abrupt temperature changes cause thermal stress and may result in glass breakage.

Certified quality

Legal regulation of volumetric instruments in Germany

Subject: Glass or plastic volumetric instruments (only Class A/AS) and piston-operated volumetric instruments

For volumetric instruments to be kept ready and used in areas regulated by law, such as the medical and pharmaceutical fields (manufacture and testing of medicines), the German Calibration Regulation requires a Certificate of Compliance from the manufacturer. This is certified with the mark "H" and the manufacturer's code – here, "B" for BRAND.

Replaces the Calibration Regulation. For volumetric instruments to be kept ready and used in areas regulated by law, such as the medical and pharmaceutical fields (manufacture and testing of medicines), the German Measurement and Calibration Regulation requires a Certificate of Compliance from the manufacturer.

Our product selection

Volumetric flask PUR-coated, BLAUBRAND®, A, DE-M, 200 ml, Boro 3.3, NS 14/23, PP stopper

The PUR coating envelops the volumetric flasks like a protection skin. In the event of breakage, the safety coating helps contain the glass fragments.Compared…

Bulb pipette, BLAUBRAND®, AS, DE-M, 0,5ml, one-mark

AR-GLAS®. DIN EN ISO 648. Calibrated to deliver (TD, Ex). Waiting time 5 seconds.All…

Volumetric flask, BLAUBRAND®, A, DE-M, 10 ml, Boro 3.3, W, beaded rim

Boro 3.3. DIN EN ISO 1042. Calibrated to contain (TC, In). All…

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Product documentation and downloads

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