These Classic Kjeldahl Digestion Apparatus provide macro digestion for nitrogen determination of samples up to five grams. Six-Place Models are able to digest up to six samples at one time. Two-Place Models are able to digest up to two samples at one time. The Two-Place unit offers the same rugged construction as larger Kjeldahl models, plus it is compact and may be placed inside a fume hood. Choose units with Water Ejector Systems for fume removal.