The calibration knob can be tightened with a simple turn
Atago MASTER-S28alpha specs:
the help screen also list the required reagent sets
The units can be used for controlling the concentration of saltwater used in rinsing seafood or salinity in cooking
Atago MASTER-2T Hand Held 28-62% Brix, ATC Antifreeze Refractometer The calibration knob can beItem Description: Atago MASTER 2T Hand Held 28 62% Brix Refractometer with Automatic Temperature Compensation (ATC) A FAVORITE OF FOOD INDUSTRY PROFESSIONALS! Ideal for Jams, Jellies, Fruit Juice Concentrates, Soda Concentrates (NOT for Soda Fountains see our other, lower Brix Refractometers for that application), Ketchups, Barbeque Sauces, Glazes, Fudges, Chocolate Sauces, Salad Dressings, and more. We know a thing or two about how and where to use