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eVOLVER
  • eVOLVER Documentation Wiki
  • General
    • About Us
    • eVOLVER Community
      • Code of Conduct
  • Getting Started
    • Buying eVOLVER
    • Part Sourcing
    • Unboxing and Setting Up
    • Software Installation
      • DPU Installation
      • Electron App (GUI) Installation
    • Configuring Computer and Networking
      • Router Setup
    • Calibrations
      • Temperature Calibration
      • Optical Density Calibration
      • Pump Calibration
      • Manual Calibration - calibrate.py
  • Upgrade Base eVOLVER Hardware
  • Experiments
    • Starting an Experiment
      • Carboy Media Prep
      • Preparing Vials
      • Setup Waste Carboy
      • Sterilizing Lines
      • Loading Vials and Setting Initial Conditions
      • OD Blank
      • GUI Start Guide
      • Command Line Start Guide
      • Cleaning Up After Experiment
    • Growth Curve
    • Chemostat
    • Turbidostat
    • FAQs
    • Tips and Tricks
  • Guides
    • Use the GUI to Control Parameters
    • Building a Smart Sleeve
    • Making media bottles and splitters
    • Emergency Efflux
    • View the Server Log and Restart Server
    • Updating the eVOLVER Server
    • Change Your conf.yml File
    • Arduino Software Installation
    • Raspberry Pi Configuration
    • Command Line Usage
    • Millifluidics Guides
      • Designing Millifluidics Using Eagle
      • Constructing Laser Cut Millifluidics
      • Constructing Millifluidics via SLA Printing
      • Calibrating IPPs
      • Operating Millifluidics
  • Troubleshooting
    • Troubleshooting Overview
    • Experiment Troubleshooting
      • Contamination
      • Vial Overflow, Pump Failure, and Spills
      • Tubing and Connector Blockage and Bursting
    • Optical Density (OD) Readings
    • Vial Troubleshooting
      • Replacing Photodiodes and LEDs
      • Heating Element
      • Stirring
    • Server Troubleshooting
    • Vial Platform Troubleshooting
      • Motherboard Troubleshooting/Replacement
      • 12V Power Supply Troubleshooting/Replacement
    • GUI Troubleshooting
    • eVOLVER Maintenance
  • Hardware
    • Overview of Hardware Architecture
    • Overview of Fluidics
      • Tubing and connectors
      • Peristaltic Pumps
      • Fluidics box
    • Overview of Millifluidics
      • IPPs (Integrated Peristaltic Pumps)
      • Pressure Regulator
    • Vial Caps
      • Universal Vial Cap Construction Guide (Luer Connectors Only)
      • 5 and 7 Port Nylon Tubing Caps Construction Protocol
    • Smart Sleeve
      • Vial Board
      • 🌪️Stirring
      • Temperature
      • Optical Density
        • OD90 vs OD135
    • Motherboard Layout and Circuitry
      • 🌡️Arduino
      • Sensor/Actuator Board Slots
      • Pulse Width Modulation (PWM) Boards
      • Analog-to-Digital Converter (ADC) Boards
      • RS485 Board
    • Raspberry Pi
    • Chassis
    • Light Blocker / Splash Guard
    • Known Issues
  • Software
    • Overview of Software Architecture
    • DPU
      • Calibration
      • custom_script.py
      • Experiment Data Files
      • eVOLVER.py
    • Arduino
    • Server (Raspberry Pi)
      • Calibration Files
      • Configuration Files (conf.yml)
    • Known Issues
  • Extensions
    • Adding A New Experimental Parameter
      • Power Supply
      • Specific Applications
      • Custom Calibration Code
    • Custom Experiments
      • ePACE
        • ATTiny1634 Writing
        • LUX Board Troubleshooting
      • Morbidostat
      • Extractor Column
        • Extractor Volume Maintenance
        • Experiment Start
          • Sterilizing Extractor Fluidics
          • Setting up your experiment
          • Using the extractor script
        • Extractor Analysis
        • Troubleshooting
        • Example protocols
      • Phototroph Growth
        • Setup Phototroph eVOLVER
        • Photo-eVOLVER Smart Sleeves
          • Photo-eVOLVER Smart Sleeve Construction Guide
        • Experiment Guide
    • Custom Fluidics
      • Adding a Third Pump Rack
      • Bubblers / In-Vial Aeration
        • Bubbler Construction Protocol
        • Bubbler Cleaning Protocol
      • Running the slow pumps
    • min-eVOLVER
      • About
      • min-eVOLVER Construction
        • Parts
        • Construction Protocol
      • Fluidics Setup
      • Software Installation and Startup
      • send_command.py
      • Calibrations
      • Starting an Experiment
      • ePACE with min-eVOLVER
        • [v1.1] ePACE with min-eVOLVER
      • Troubleshooting
    • Interfacing with Other Systems
  • Contributing
    • Guidelines for Contribution
    • Reporting a Bug / Hardware Failure
    • Documentation
      • Making a Forum Post
      • How to Edit the Wiki
    • Software Development
    • Hardware Development
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  1. Experiments
  2. Starting an Experiment

Loading Vials and Setting Initial Conditions

PreviousSterilizing LinesNextOD Blank

Last updated 2 years ago

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  1. For the next few steps, it is recommended to spray your gloves with 70% ethanol.

  2. Partially insert autoclaved vials into the eVOLVER Smart Sleeves such that efflux straw is entirely visible, if possible.

  3. Start by attaching input lines (clear) to the short influx straw, avoid touching the tips of the lines to avoid contaminating the inside.

  4. Next, attach efflux lines (blue) to the long efflux straw. It is critical to check for loose connections or incorrectly routed lines. Failure to do so will cause overflows and potentially damage the Smart Sleeve.

  5. In the setup menu in the electron app, run all pumps in 10 second intervals to fill the vials with media. Run enough media so that the efflux pumps start removing media through the efflux straws.

  6. Visually inspect the culture volumes at this point. If the efflux straws do not appear to be functioning efficiently (media levels rise above the efflux straw), inspect the fluidic line connections and the peristaltic pump. Correct or replace parts as needed to prevent overflows.

  7. Push vials down until fully encased by the Smart Sleeve. If aluminum sleeves are cut to different lengths, vials may appear to be covered in different amounts.

  8. Be sure that the desired calibration files have been selected from the dropdown menu in the setup panel. These files are stored on the device itself, and will default to the most recently used calibration. Temperature and OD calibrations must be repeated if vials are replaced, and OD calibrations are recommended if switching to a new organism (i.e. bacteria vs yeast). Otherwise, calibrations can be used over and over again.

  9. Set the initial conditions for experimental parameters using the eVOLVER electron app. This will be overwritten once the experiment code starts running, but can be helpful for preheating media or trying out different stir rates.

  10. If stir bars are jumping around (audibly) then the stir rate may be too high for the volume of culture you are using. Commonly used values are between 8 and 12.

Relevant Forum Posts

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