Further research revealed that a combination of a charged polymer and disaccharide such as lactitol completely stabilised the enzyme.The lactitol effectively stabilised the alcohol oxidase membrane sandwiches,and they could be stored for months in the dry state without loss of activity. Such electrodes have excellent linearity, and can be used for hundreds of assays over periods of 14 to 56 days at room temperature depending on use and sample concentration.By manipulating