OpenLH: Open Liquid-Handling System for Creative Experimentation with Biology

1. Motion—Motion accuracy: not reported
2. Volume—Volumetric accuracy: not reported
3. Viability—Cell viability: not reported
4. Unattended—Unattended operation: not reported
5. Standard—Standard compliance: not reported

The full text was read and states no figure for any of the five.

Each score is shown against the range the other 59 builds actually occupy, because no criterion uses the full 1–5 scale. These describe how reproducible the build is, not how good the science is.

• Resolution

  4/1–5

  Dispenses 0.2 uL droplets (0.3 uL bioprint) via a linear-actuator syringe, but a 0.15 uL average SD makes true sub-uL reliability marginal.

• Throughput

  3/2–5

  Single pipette head, stated as a limitation by the authors; automates a 48-well serial dilution with tip changes but handles one channel and fluid at a time.

• Parts sourcing

  4/2–4

  Mostly off-the-shelf or kit-based components.

• Skill needed

  4/2–4

  Build/operation described as low-skill or basic assembly.

• Facilities needed

  4/2–4

  Uses common benchtop/desktop equipment or generic consumables.

• Documentation

  3/2–5

  Some open documentation or files are available.

• Validation effort

  3/2–4

  Gravimetric water dispensing across 0.25-15 extruder steps (n=4) with SD reported and a calibration manual supplied; "as accurate as commercial" is asserted but never experimentally benchmarked.

• Cycle time

  3/1–4

  No timing comparison reported; only a qualitative claim that speed is comparable to human-hand pipetting in a single transaction.