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W i n e s & V i n e s A P R i L 2 0 1 4 51 TANIN / TANNIN TANIN ELLAGIQUE DE CŒUR DE CHENE 1 kg USAGE ŒNOLOGIQUE œnologie ricerca innovación i n n o v a t i o n nature QUERTANIN® INTENSE NE e a ció a n t i o n e ® Tanin de qualité «merrain» à dissolution instantanée (process IDP) pour l'élevage des vins blancs, rosés et rouges. Contribue à l'équilibre tannique TANIN / TANNIN TANIN ELLAGIQUE DE CŒUR DE CHENE 1 kg USAGE ŒNOLOGIQUE œnologie ricerca innovación i n n o v a t i o n nature QUERTANIN® SWEET Tanin de qualité «merrain» à dissolution instantanée (process IDP) pour l'élevage des vins blancs, rosés et rouges. Contribue à la longueur en bouche. TANIN / TANNIN TANIN ELLAGIQUE DE CŒUR DE CHENE 1 kg USAGE ŒNOLOGIQUE œnologie ricerca innovación i n n o v a t i o n nature QUERTANIN® A dissolution instantanée, pour l'élevage des vins blancs, rosés et rouges OAK EXTRACT NATURAL OAK EXTRACT 1 kg NET WEIGHT œnologie ricerca innovación i n n o v a t i o n nature QUERPLUS e ción i o n e Enhances structure and complexity U.S.A. This method allows you either to clarify a larger quantity of wine to which fining agents are added so they can be gravity- clarified sufficient to judge the effect of the agent organoleptically, or with a smaller flask setup, to filter the unfiltered wine to which the fining agent has been directly added for evaluation. Conclusions There are many other analyses that can be done on wine that have not been addressed in these two articles. However, these minimum levels of laboratory func- tions will make a significant contribution to wine quality and can be used by a win- ery to create a plan for progressing to a more fully functional laboratory that does not necessarily require a person with an advanced degree in either chemistry or biology to run the tests. The analytical equipment described here is either owned by our laboratory or has been loaned to us for use in preparing this article. I am grateful for this support. Selecting the suppliers of lab equipment begins a partnership with that company. Validate and verify their ability to provide you with the level of support you will require. Whereas these sophisticated instruments are quite powerful, and the volume of data can be a valuable asset to making good wine, they usually take a per- son with good skills at attention to detail to get valuable answers. I've trained many people to use these types of instruments that have no science training. Remember, the more you know about your wine the better wine you will make. Dr. Richard Carey is president of Vitis Wine Center and winemaker for Tamanend Winery in Lancaster, Pa. He has written numerous articles on new tech- nologies for the grape and wine industry as well as a series of articles on laboratory analyses in Wine East magazine. Dissolved oxygen meters give variable numbers. VERNIER OPTICAL W I N E M A K I N G