The PAL Series Refractometers are completely new and redesigned digital hand-held instruments. Their surprisingly compact size allows you to easily carry it around and use it indoors as well as outdoors. All models have automatic temperature compensation from 10-75° C. Only a 0.3ml sample volume is required. The PAL-1 (Brix 0.0 to 53.0%) works perfectly in measuring almost any fruit juice, food, or drink, such as soup, sauce, ketchup, tomato sauce, low-sugar jam, or marmalade. The PAL-2 (Brix 45.0 - 93.0%) can measure various high concentration samples such as jam, marmalade, jelly, honey and concentrated juice. PAL-2 is IP65, so you can clean and remove thick samples under running water. The PAL-3 is a full range Brix Scale (0.0-93.0%) instrument.