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--- pipettetip_volumetric_calculation [2020/11/02 22:42]
richard
+++ pipettetip_volumetric_calculation [2021/08/16 22:22] (current)
@@ Line 3: / Line 3: @@
 This describes a technique that involves measuring the volume of fluids aspirated using this LabBot pipetting technology which involves using simple disposable 1ml Luer lock syringes and servo-driven 3 way stop cock valves with silicone tubing.
-|Syringe pump {{ :syringe.png?200 |}}|Servo valve {{ :valve.png?200 |}}|
+|Figure 1 Syringe pump {{ :syringe.png?200 |}}|Figure 2 Servo valve {{ :valve.png?200 |}}|
 So although the technique has more functionality than say using a multichannel pipetter (unlimited aspiration and dispensing volume, can be used with different types of pipette tips and different types of liquid handling techniques like (piezoelectric, displacement, pneumatic and peristaltic), the issue is just how does it work compared to a multichannel pipetter or even how it works with a Cavro pump using Upchurch (PTFE) tubing.
-This study demonstrates a method using a RaspberryPi based camera that is used for imaging and quantifying the volume of aspirated fluid (having a green dye in this example).
+This study demonstrates a method using a RaspberryPi based camera that is used for imaging and quantifying the volume of aspirated fluid (having a green dye in this example). The camera is positioned to the side of the deck and is used for taking photos. This functions as an Internet-of-thing tool that runs a messaging subscriber that responds to programmatically published messages through the LabAutoBox automation scheduler software.
+An example of the image processed data is shown Figure 3.
+Figure 3 Volume measurement in pipette tip {{ :347_50_airdyeair8120115newpic.png?400 |}}
+The aspiration process follows the following steps:
+  - Aspirate air 5ul
+  - Aspirate sample 6ul
+  - Aspirate air 3ul
+Here is a video showing the aspiration process:
+{{youtube>VBb4YAIR5CY?&rel=0 | Pipette aspiration for volumetric quantification example}}
+The macro used to do this is posted:
+<code>
+G1Z0F1000_0.5
+//valve-1_1_1_1_1_1_1_1-valveinput
+valve-1_1_1_1_1_1_1_1-input
+//syringe 300 speed 40 acc 20
+sg1e300s40a20_15
+//valve-1_1_1_1_1_1_1_1-valveoutput
+valve-1_1_1_1_1_1_1_1-output
+sg1e305s6a3_10
+//valve-1_1_1_1_1_1_1_1-valvebypass
+valve-1_1_1_1_1_1_1_1-bypass
+//dyeaspmodel
+//dyeaspmodel
+//motion 96well zh 20 row 2 F3000
+G1Z0F3000
+G1X228.16666666667Y183.5F5000_8
+G1Z40F3000
+//motion 96well zh 0 row 2 F500
+G1X228.16666666667Y183.5F500
+G1Z60F500_5
+//valve-1_1_1_1_1_1_1_1-valveoutput
+valve-1_1_1_1_1_1_1_1-output
+//syringe 326 speed 6 acc 3
+sg1e311s6a3_8
+G1Z60F500_2
+//valve-1_1_1_1_1_1_1_1-valvebypass
+valve-1_1_1_1_1_1_1_1-bypass
+//motion 96well zh 20 row 2 F3000
+G1X228.16666666667Y183.5F3000
+G1Z40F3000
+//valve-1_1_1_1_1_1_1_1-valveoutput
+valve-1_1_1_1_1_1_1_1-output
+sg1e313s6a3_8
+//valve-1_1_1_1_1_1_1_1-valvebypass
+valve-1_1_1_1_1_1_1_1-bypass
+//washmodel
+//motion wash station zh 0 row 1 F3000
+G1Z0F3000
+G1X235.5Y36F3000
+G1Z40F3000
+//waste 2 on
+wasteon
+//wash 1 on
+washon
+G1Z40F3000_30
+//wash 1 off
+washoff
+//waste 2 off
+wasteoff
+//just dry function
+G1Z0F3000_2
+touchdry Z20F3000ZT0T1
+</code>

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