DURAN® Measuring Pipette (Graduated Pipette)


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DURAN® Measuring Pipette (Graduated Pipette)

Pipettes are manufactured from soda-lime glass.

They are used for the precise measurement and decanting of liquids. Full pipettes only allow filling to specific quantities. Measuring pipettes allow different quantities of liquids to be held and dispensed in portions of the same size or different sizes.

Calibration of the pipettes and burettes is based on the discharged volume (“Ex”) at a reference
temperature of 20°C. This means that the quantities can be withdrawn precisely as shown on the scale as the adhesion of the liquid to the glass has been taken into account during calibration.

Conformity mark DE-M – The conformity mark confirms that the instruments satisfy the requirements of the German weights and measures regulation and the applicable standards.

Batch certificate – Pipettes and burettes in the accuracy class AS have a batch number and are supplied with a batch certificate. This certificate documents the mean value obtained from measuring the batch in question, the standard deviation and the day of issue. The batch certificates can also be retrieved online. The batch number consists of four digits, for example: 18.01. The first two numbers specify the production year, and the following two numbers specify the batch.

Screen print label for pipettes

Explanations

Batch number, e.g. 15.01
Conformity mark – verifies compliance with the requirements of the German weights and measures regulation and applicable standards.
10 Nominal volume in ml
±0.05ml Accuracy limit – the deviation of the nominal volume must be no greater than this value which is specified in standards
20°C Reference temperature – the temperature at which a volumetric instrument must achieve the nominal volume (20°C) stated on it.
AS Accuracy class – denotes the accuracy limit
ISO 835 Standard designation
Ex 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.
Ex + 5 Waiting time. Allow to discharge and wait 30 seconds. It is important to comply with the specified waiting time to prevent measurement errors
Total measurement volume – scale increment is specified below

DIFFERENCE TYPE OF MEASURING PIPETTES

MEASURING PIPETTE TYPE 1

  • Drain-out
  • zero at top

MEASURING PIPETTE TYPE 2

  • Blow-out
  • zero at bottom
  • graduated to tip (total delivery)

MEASURING PIPETTE TYPE 3

  • Blow-out
  • zero at top
  • graduated to tip (total delivery)

MEASURING PIPETTES TYPE 1

Measuring Pipette from Soda-lime Glass, class AS, type 1

blue printed image, Drain-out, zero at top, with main graduations as circular divisions and cotton plug, with certificate of conformity and With batch certificate

Numbering from the top down. Calibration is based on the poured out volume (“Ex”) at a + 20 °C reference temperature. Due to the scale, variable volumes can be held and then dispensed in the same or differing increments.

Typical applications: accurate measurement and decanting of liquids.

Cat. No. Capacity
(ml)
l
(mm)
Accuracy
limits (ml)
Graduation
(ml)
Colour code
DIN 12621
Pack
Unit
233460606 0.5 360 0.006 0.01 3 x yellow 12
233461105 1 360 0.007 0.01 2 x yellow 12
233461602 2 360 0.01 0.02 2 x black 12
233462307 5 360 0.03 0.05 2 x red 12
233462907 10 360 0.05 0.1 2 x orange 12
233463209 20 360 0.1 0.1 3 x yellow 6
233463406 25 450 0.1 0.1 2 x white 6
233463603 50 450 0.2 0.2 2 x black 6

Measuring Pipette from Soda-lime Glass, class B, type 1

Brown diffusion print, drain-out, zero at top, graduated, with cotton plug

Numbering from the top down. Calibration is based on the poured out volume (“Ex”) at a + 20 °C reference temperature. Due to the scale, variable volumes can be held and then dispensed in the same or differing increments.

Typical applications: accurate measurement and decanting of liquids.

Cat. No. Capacity
(ml)
l
(mm)
Accuracy
limits (ml)
Graduation
(ml)
Colour code
DIN 12621
Remarks Pack
Unit
243430102 0.1 360 0.01 0.001 3 x green Non-ISO size, calibrated to contain (“Ex”). 12
243430308 0.2 360 0.01 0.001 3 x blue Non-ISO size, calibrated to contain (“Ex”). 12
243430608 0.5 360 0.008 0.01 3 x yellow 12
243431107 1 360 0.008 0.01 2 x yellow 12
243431604 2 360 0.015 0.02 2 x black 12
243432309 5 360 0.04 0.05 2 x red 12
243432909 10 360 0.08 0.1 2 x orange 12
243433408 25 450 0.15 0.1 2 x white 12

MEASURING PIPETTES TYPE 2

Measuring Pipette from Soda-lime Glass, class AS, type 2

brown inscription, Blow-out, zero at bottom, graduated to tip (total delivery), with main graduations as circular divisions and cotton plug, with certificate of conformity and batch certificate

Numbering: zero at bottom. Calibration is based on the poured out volume (“Ex”) at a + 20 °C reference temperature. Due to the scale, variable volumes can be held and then dispensed in the same or differing increments.

Typical applications: accurate measurement and decanting of liquids.

Cat. No. Capacity
(ml)
l
(mm)
Accuracy
limits (ml)
Graduation
(ml)
Colour code
DIN 12621
Pack
Unit
233470607 0.5 360 0.006 0.01 2 x yellow 12
233471106 1 360 0.007 0.01 1 x yellow 12
233471603 2 360 0.01 0.02 1 x black 12
233472308 5 360 0.03 0.05 1 x red 12
233472908 10 360 0.05 0.1 1 x orange 12
233473201 20 360 0.1 0.1 2 x yellow 6
233473407 25 450 0.1 0.1 1 x white 6
233473604 50 450 0.2 0.2 1 x black 6

Measuring Pipette from Soda-lime Glass, class AS, type 2

blue inscription, Blow-out, zero at bottom, graduated to tip (total delivery), with main graduations as circular divisions and cotton plug, with certificate of conformity and batch certificate

Numbering: zero at bottom. Calibration is based on the poured out volume (“Ex”) at a + 20 °C reference temperature. Due to the scale, variable volumes can be held and then dispensed in the same or differing increments.

Typical applications: accurate measurement and decanting of liquids.

Cat. No. Capacity
(ml)
l
(mm)
Accuracy
limits (ml)
Graduation
(ml)
Colour code
DIN 12621
Pack
Unit
233480608 0.5 360 0.006 0.01 2 x yellow 12
233481107 1 360 0.007 0.01 1 x yellow 12
233481604 2 360 0.01 0.02 1 x black 12
233482309 5 360 0.03 0.05 1 x red 12
233482909 10 360 0.05 0.1 1 x orange 12
233483202 20 360 0.1 0.1 2 x yellow 6
233483408 25 450 0.1 0.1 1 x white 6
233483605 50 450 0.2 0.2 1 x black 6

MEASURING PIPETTES TYPE 3

Measuring Pipette from Soda-lime Glass, class AS, type 3

Brown diffusion print, blow-out, zero at top, with ring graduations, with cotton plug, with batch certificate and certificate of conformity

Numbering from the top down. Due to the scale, variable volumes can be held and then dispensed in the same or differing increments.

Typical applications: accurate measurement and decanting of liquids.

Cat. No. Capacity
(ml)
l
(mm)
Accuracy
limits (ml)
Graduation
(ml)
Colour code
DIN 12621
Pack
Unit
243451109 1 360 0.007 0.01 1 x yellow 12
243451709 2 360 0.01 0.02 1 x black 12
243452302 5 360 0.03 0.05 1 x red 12
243452902 10 360 0.05 0.1 1 x orange 12
243453401 25 450 0.1 0.1 1 x white 12

Measuring Pipette from Soda-lime Glass, class AS, type 3

blue inscription, Blow-out, zero at top, graduated to tip (total delivery), with main graduations as circular divisions and cotton plug, with certificate of conformity and batch certificate

Numbering from the top down. Calibration is based on the poured out volume (“Ex”) at a + 20 °C reference temperature. Due to the scale, variable volumes can be held and then dispensed in the same or differing increments.

Typical applications: accurate measurement and decanting of liquids.

Cat. No. Capacity
(ml)
l
(mm)
Accuracy
limits (ml)
Graduation
(ml)
Colour code
DIN 12621
Pack
Unit
233490609 0.5 360 0.006 0.01 2 x yellow 12
233491108 1 360 0.007 0.01 1 x yellow 12
233491605 2 360 0.01 0.02 1 x black 12
233492301 5 360 0.03 0.05 1 x red 12
233492901 10 360 0.05 0.1 1 x orange 12
233493203 20 360 0.1 0.1 2 x yellow 6
233493409 25 450 0.1 0.1 1 x white 6
233493606 50 450 0.2 0.2 1 x black 6

Measuring Pipette from soda-lime glass, class B, type 3

Brown diffusion print, blow-out, zero at top, graduated, with cotton plug

Numbering from the top down. Calibration is based on the poured out volume (“Ex”) at a + 20 °C reference temperature. Due to the scale, variable volumes can be held and then dispensed in the same or differing increments.

Typical applications: accurate measurement and decanting of liquids.

Cat. No. Capacity
(ml)
l
(mm)
Accuracy
limits (ml)
Graduation
(ml)
Colour code
DIN 12621
Remarks Pack
Unit
243440103 0.1 360 0.01 0.001 2 x green calibrated to contain (“Ex”). 12
243440309 0.2 360 0.01 0.001 2 x blue calibrated to contain (“Ex”). 12
243440609 0.5 360 0.008 0.01 2 x yellow 12
243441108 1 360 0.008 0.01 1 x yellow 12
243441605 2 360 0.015 0.02 1 x black 12
243442301 5 360 0.04 0.05 1 x red 12
243442901 10 360 0.08 0.1 1 x orange 12
243443409 25 450 0.15 0.1 1 x white 12

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