![Witeg WITOPET 5 402 002 Скачать руководство пользователя страница 22](http://html1.mh-extra.com/html/witeg/witopet-5-402-002/witopet-5-402-002_manual_989869022.webp)
22
7 RECOMMENDATIONS
The recommendations below will ensure maximum accuracy and precision from your pipettet.
Make sure to operate the pipette slowly and smoothly
The depth of immersion in the sample liquid should be the minimum necessary and should
remain constant during aspiration.
The pipette should be held in a vertical position.
Change the tip when volume setting is changed or when a different liquid is to be aspirated.
Change the tip if a droplet remains on the end of the tip from the previous pipetting operation.
Each new tip should be pre-rinsed with the liquid to be pipetted.
Liquid should never enter the pipette shaft. To prevent this :
Press and release the pushbutton slowly and smoothly.
Never turn the pipette upside down.
Never lay the pipette on its side when there is liquid in the tip.
Never force the volume setting beyond its recommended limits.
When pipetting liquids with temperatures different from the ambient temperature, it is
recommended to pre-rinse the tip several times before use.
Do not pipette liquids with temperatures above 70°C.
When pipetting acids or corrosive solutions which emit vapours, it is recommended to
disassemble the shaft and to rinse the piston and seal with distilled water after finishing the
pipetting operation.