I want to do quantification of some biomolecules viz, cellulose, callose, lignin etc., at different stages of rice anthers (6 anthers per flower) where the weight of anthers also differs at each stage. I want to determine anthers weight at first but because of the very tiny size of anthers I cannot estimate the anthers weight at any stage precisely. I suppose that weight is in micrograms but our lab don't have a device that measures weight in micrograms. I appreciate any suggestions in this regard.