- Functional
- Bench-tested and working. The unit powers up, charges, aspirates, holds vacuum without leaking down, and dispenses. Both SPEED settings (HIGH and LOW) and both operating modes work, and the photos show each state on the LCD with a full three-bar battery. Function was demonstrated with a real serological pipette and dyed water: the controller draws the liquid column up the pipette, holds it with the trigger released, and drives it back out under power. That is a working demonstration, not a calibrated measurement. Volume accuracy is not claimed and is not a property of this instrument.
- Cosmetic
- Light shop wear. Housing, blue nose cone, trigger rocker and the removable battery module are all intact, the LCD is clear, and the filter and connector gasket are sound (proven by the vacuum-hold test).
- Tested
- Powers on; LCD reads clearly · Charges. LCD shows three solid bars, which is a full charge on this model · Aspirate: draws a dyed-water column up a serological pipette under power · Vacuum HOLD: with the trigger released the column stays put. The system does not leak down · Dispense: drives the column back out under power · Both SPEED settings, HIGH and LOW, work on aspirate and dispense · Both operating modes work. Gravity dispense and blow-out
- Not tested
- Volume accuracy. A pipette controller is not a metering device; accuracy comes from the serological pipette you fit, not from this unit · Battery runtime. Corning rates a full charge at up to 8 hours; that was not run down and timed here · Long-term charge retention of the included cells