03 VOLUMETRIC GLASSWARE
ALL INFORMATION AT A GLANCE
Screen print label for volumetric flasks
250
ISO 1042 A NS 14/23
±0.15ml In 20°C Made in UK
Volumetric flask, accuracy class A
DURAN SCHO
15 DE-M
250
ISO 1042 A NS 14/23
±0.12ml In 20°C Made in UK
Volumetric flask, accuracy class A, compliant with USP <31>
DURAN SCHO
15 DE-M
250
ISO 1042 B NS 14/23
±0.3ml In 20°C
Volumetric flask, accuracy class B
UK
DURAN SCHO
Screen print label for pipettes and burettes
10 ISO 648 AS Ex +5 20°C ± 0.02 ml
10 0.1 ISO 835 AS Ex +5 20°C ± 0.05 ml
10 0.02 ISO 385 AS Ex +30 20°C ± 0.02 ml
Measurement pipette
Full pipette
Burette
Batch number, e.g. 15.01
Conformity mark – verifies compliance with the requirements of the German weights and measures regulation and applicable standards. United States Pharmacopoeia – the product satisfies the requirements specified in USP <31>
DE-M 15 USP
Nominal volume in mL
Accuracy tolerance – the deviation of the nominal volume must be no greater than this value which is specified in standards Reference temperature – the temperature at which a volumetric instrument must achieve the nominal volume (20°C) stated on it.
±0.12ml 20°C A NS14/23 ISO 1042 UK AAA-0001 DD.MM.YY In Ex
Accuracy class – denotes the accuracy limit
Standard taper ground size
Standard designation
Country of origin
Individual number (laser-etched onto the base)
Production date (laser-etched onto the base)
Calibration based on “In” (poured in volume). The quantity of liquid held corresponds to the volume specification printed on the product. Calibration based on discharged volume. The quantity of liquid discharged corresponds to the volume specification printed on the product, e.g. pipettes, burettes. The remaining liquid on the walls of the vessel or in the tip is also taken into consideration. Calibrated to deliver after the specified waiting time. In this example 30 seconds. It is important to comply with the waiting time to prevent measurement errors.
Ex +30s 10 0.02
Total measurement volume – scale increment is specified below
89
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