In order to ensure that all analyses in your laboratory are accurate and reproducible, it is particularly important that your precision instruments such as single and multichannel pipettes and dispensers work reliably. Therefore, we are happy to introduce our own neoLab pipette service! On this website you can easily let us create an offer for you or you can send us your order. Here you will find a compact summary of our services.
|Type of pipette||basic
||Standard ISO 8655
||Standard Plus ISO 8655
||Standard DAkkS ISO 17025
||Standard plus DAkkS ISO 17025
|1-channel fixed volume||1x4||1x10||1x3 and 1x10||1x10||1x3 and 1x10|
|1-channel variable||2x4||3x10||3x3 and 3x10||3x10||3x3 and 3x10|
|8-channel variable||2x4||3x10||3x3 and 3x10||3x10||3x3 and 3x10|
|12-channel variable||2x4||3x10||3x3 and 3x10||3x10||3x3 and 3x10|
|All prices include maintenance, repair and adjustment! If necessary, the original spare parts will be charged separately.|
The following is a graphical representation of the precision and accuracy of a pipette. The target represents the volume range around the central setpoint, the black dots are different readings of a certain volume.
|Result||Measuring instruments must be calibrated||Deviations are "equally likely" Measuring instruments must be recalibrated||Systematic deviations, instruments that are outside the error limit must be calibrated||Measured values within the tolerance range, a calibration is not necessary|
Calibration is a gravimetric inspection of pipettes. Regular calibration is used to determine and correct the difference between the metered and adjusted volumes. Frequent use and pipetting of various liquids will cause the pipette to lose its exact performance over time. This depends on several factors, including whether it is an air cushion pipette, a direct displacer or a stepper. According to the manufacturer's recommendation, a check of the pipette should take place between 3 and 12 months, depending on the frequency of the pipetting procedures and the type of pipetted liquids.
The main reasons for not doing your pipette calibration yourself are high equipment, personnel, and environmental costs. Here we have summarized the most important points for you in detail!
The design and operating principle of air cushion pipettes require defined environmental conditions:
These parameters have a direct influence on the conditions in the air cushion and cause large errors if they are not set exactly or are known! The room conditions may differ only minimally from the setpoint, otherwise no calibration is possible
An example of this is the following procedure:
In order to ensure the necessary accuracy classes of a successful pipette calibration, extremely accurate measuring instruments are necessary. The following requirement profiles must be adhered to:
|0,1 - 10 µl||6 digit scale||Microbalance|
|20 - 250 µl||5-digit scale||Semimicrobalance|
|300 - 1000 µl||4-digit scale||Analytical balance|