the hand-held saccharometer is used for the rapid determination of the concentration or refractive index of sugar-containing solutions and other non-sugar-containing solutions. widely used in sugar, food, beverage and other industrial sectors and agricultural production and scientific research. suitable for the concentration measurement of soy sauce, ketchup and other sauces (seasonings), suitable for the measurement of sugar content of jam, sugar, liquid sugar and other sugar-containing products, suitable for the production line of fruit juice, refreshing drinks and carbonated sour drinks, quality management, pre-delivery inspection, etc., suitable for the process of fruit from planting to sales, it can be used to determine the accurate harvest period. the classification of sweetness was made. in addition, the determination of slurry concentration in the textile industry has also been widely used.