Dispense multiple plates simultaneously

How do i make Hamilton (microlab STAR) to dispense in multiple plates at the same time? I am able to make each probe that i have interest (4) span across their positions (sequence structure: plate 1 A1, plate 2 A1…), but they are not dispensing simultaneously. Instead, hamilton use the first one on the A1 position of the first plate, the second probe wait until the first finish and them the second probe dispense on the A1 position of the second plate.
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I am using single step dispense without any previous preparation. 1ul for testing purposes. The robot is able to reach H1 without any issue on each plate…but it’s slow.

Thank you.

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Hi @L001 ,

What is the X coordinate for each plate? If they are different in any way, then you will see the serpentine movement as the channels must move to traverse height prior to dispensing to safely move to the next X coordinate.

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Also, if you could share how your sequence is set up and/or provide a copy of your method, we could help better diagnose. It may also just be a matter of sorting your sequence.

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Hi @BrandonBare_Hamilton and @EricSindelar_Hamilton

Splendid suggestion @BrandonBare_Hamilton. Your solution was comfortable to apply and the result could be seen instantly. In fact, my plates were slightly misaligned on X coordinate and the robotic arm tried to adjust constantly.

@EricSindelar_Hamilton here is how i built my sequence:


I tried to build it on Venus to avoid another dependence in my method but i found no easy way to do it.

On method i am reading it like this:

All the best!

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Of course @BrandonBare_Hamilton called it. Thanks for the follow up confirming the solution!

You could make this sequence in the sequence editor using the Fixed (single) channel Selection Tool (tedious, but you would just select each well individually to build the sequence). It would get complicated though if you ultimately want have a variable number of plates 1-4 so it may be more prudent to use a worklist as you’ve shown for utmost flexibility.

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