Graphite, Anode & Battery Materials Processing worked example

Quality Sampling Load with quality lab equipment load of 20 kW: a worked example in graphite, anode & battery materials processing

What does the result look like when quality lab equipment load reaches 20 kW? The full calculation is worked below with real intermediate numbers. Use it when PSD, tap density, BET surface area, moisture, ash, impurity ppm, or metal contamination testing adds measurable lab load or cost to a release plan.

The inputs for this scenario

  • Quality lab equipment load: 20 kW (raised for this scenario; the documented default is 8)
  • Sampling and test runtime: 6 hr (unchanged)
  • Blended electricity rate: 0.11 $ / kWh (unchanged)
  • Samples or released kg: 24 samples (unchanged)

Working through the calculation

  • Applying the documented formula (Quality sampling energy cost = quality lab equipment load × sampling and test runtime × blended electricity rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 120 kWh for quality sampling energy used, the number this scenario is built around.
  • At this operating point the engine returns 13.2 $ for quality sampling energy cost.
  • At this operating point the engine returns 0.55 $ / piece for quality sampling energy cost per sample.
  • At this operating point the engine returns 2.2 $ / hr for hourly quality sampling energy cost.

How this compares with the baseline

  • Against the tool's baseline example, where quality lab equipment load sits at 8 kW and the headline result is 48 kWh, this scenario comes in 150% above the baseline at 120 kWh.
  • A figure at this level is achievable when quality lab equipment load is genuinely sustained, not just peaked for a shift. It counts only instrument electrical energy at an average load; it excludes consumables, calibration standards, analyst labor, and the HVAC and dry-room conditioning the lab itself requires.

Results at a glance

  • Quality sampling energy used: 120 kWh (headline result)
  • Quality sampling energy cost: 13.2 $
  • Quality sampling energy cost per sample: 0.55 $ / piece
  • Hourly quality sampling energy cost: 2.2 $ / hr

Run it with your numbers

  • Every input above is editable in the live Quality Sampling Load calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.