Replace a mLINE Tip Ejector:
Step 1 Disassembly:
Gently pry and lift off the colored plunger button cap from the mLINE pipette and lay aside for reassembly later on. Shop all colors here.

Step 2:
Gently push up on the tip ejector button with your thumb to loosen/detach the black or blue colored body collar from the pipette. Lift and lay aside for reassembly later.


Step 3:
Continue to gently slide and remove the tip ejector mechanism from the pipette body until it is fully removed.

Step 3A:
With the tip ejector removed, you should have these three parts laid aside:
- New mLINE replacement Tip Ejector (gray or blue colored): SA 726005
- Body Collar: SA 726002
- Plunger Button Cap: Shop all colors here
Note: The tip ejector collars and tip ejector may come in a blue or gray color. Other than color, they are both the same and interchangeable

Step 4 Reassembly:
Gently line up the tip ejector posts with the body slots. Once aligned, slowly insert and slide the new tip ejector assembly fully into place.
Step 5 Reassembly:
Re-attach the blue or black colored collar assembly. Gently push it down until it seats firmly in place.

Step 6 Reassembly:
Re-install the plunger button onto the pipette plunger rod.
Step 7 Reassembly:
Test out the newly replaced mLINE tip ejector by installing and ejecting pipette tips.

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Hello
I have a problem with the internal mechanism of an mline 200 pipette. How do I access it?
Thank you very much
Regards
Carine Puppo
Hi Carine,
Happy to help! We will be reaching out shortly with more information.
Hi,
I have the same question as above. How do I disassemble the internal parts.
Thanks
Hi Alistair,
I’ll reach out with more information via email. Thanks!
Hi,
I am having issues with Sartorius Proline Plus 100-1000 ul mechanical pipette. How do I disassemble it?
Thank you
Hi Nisha,
Happy to help! We will be reaching out via email with more information.
I am responsible for pipette maintenance and calibration in the lab. I was given an mline Sartorius 0.5-10uL pipette that no longer picks up tips. I took apart the tip ejector mechanism for cleaning and disassembled the tip ejector collar, but the only thing I can see that looks like it might be the issue is when the tip ejector is depressed, the inside mechanism does not look to have a full range of motion as if the spring is too compressed in its natural state. Can you offer some advice or suggestions to fix this problem?
Hi Becky,
Thank you for your comment! We will be reaching out via email to discuss possible solutions.