Pump amperage: a new method for monitoring viscosity of dairy concentrates before spray drying Pierre Schuck, Serge Méjean, Anne Dolivet, Eric Beaucher and Marie-Hélène Famelart Lait, 85 4-5 (2005) 361-367 Published online: 21 June 2005 DOI: 10.1051/lait:2005014