Name of the Instrument: Rapid Visco Analyzer (RVA)
Make: PerkinElmer
Model: RVA TecMaster
Working principles: The RVA is a heating and cooling viscometer that measures the viscosity of a sample over a given period of time while it is stirred. During an RVA test, the process of pasting is observed in a starch /flour and water slurry subjected to stirring and heat, i.e. the formation of a gel as the starch granules swell and totally dislocate following gelatinization. The test is divided into 5 stages: (1) the addition of water to the starch/flour sample; (2) heating; (3) holding at a maximum temperature; (4) cooling; and (5) a final holding stage. Consequently, the observed RVA profile reflects the complex interactions of the starch and water, affected by temperature and time
Application/Scope: It covers the mid viscosity range (20 – 8,000 cP at 160 rpm). General purpose applications include: starches and starchy samples, hydrocolloids, proteins, formulated, cooked and extruded foods.
Sample requirement: Finely ground sample/ Solid samples. Amount of sample- 5g
Charges: Rs.1455.00/sample