This is the disposable version of the Wintrobe pipette, still used in some parts of the USA, and includes a filling reservoir for operator convenience. Users must record results as being obtained by the Wintrobe method and be aware they will not correlate with Westergren methods. The Wintrobe method uses a minimum of 600microliter of EDTA blood sample and does not require further dilution. The pipette scale covers 0 – 100 mm in 1 mm graduations and a large overflow chamber above the zero mark collects any excess blood sample.