Refractometers are widely used to measure the
amount of dissolved substances in solutions containing mainly sucrose. The
relationship between refractive index and the amount of dry substance content
is well known for sucrose and is the basis of the Brix scale which is measure
of the number of grams of sucrose present per 100 grams of aqueous sugar
solution. (50 Brix means 50 grams of solid per 100 gm of solution) This
relationship holds for a large number of similar substances and so the Brix
scale is widely used in the food industry. Unfortunately the refractive index
of a sugar solution changes with temperature while its solid content remains
the same. ( The same refractive index at different temperatures correspond to
different Brix values.)
The ATR-W1 enables to complete measurements in a quick and simple way by using splash proofed touch-in panel. It's new housing for the electronic offers more space for a bigger LCD display and an alphanumeric foil keypad. Batch numbers can be entered directly and also simple forms can be created and printed out. The %Brix is temperature corrected within +10 to +50 °C.
In the ATR W series are four difference models, they have other parameter for the measuring ranges, the resolution and the precision. Please see table "Technical details".
Example application scenario: The test lab wants to analyse the constituents of cosmetics. The temperature needed must be exactly 70°C because the substance will become solid below 65°C. With the ATR-W, No additional thermostat is needed.
The customer wants to be sure that the temperature of the sample remains stable within a very small variation (0,01°C). The melting point is determined by automatically running a temperature ramp.