PerkinElmer

Rapid Visco Analyser

The Rapid Visco Analyser is a unique tool for product development, quality and process control and quality assurance. It's a cooking, stirring viscometer with ramped temperature and variable shear capability optimized for testing the viscous properties of starch, grain, dairy products and other foods. The instrument will analyze as little as two or three grams of sample using international standard methods or your own tailor-made test routines of mixing, measuring, heating and cooling.

The RVA is a unique tool for product development, quality and process control and quality assurance.

  • Rapid Viscosity Profile: Standard starch pasting test in 13 minutes.
  • Easy to Use: Automated operation minimizes training and ensures reliability.
  • Relevant: Tailor test routines to emulate processing conditions in industry.
  • Calibration: Check with traceable standards to comply with ISO9000 and Quality System requirements.
  • Glass-free: Safe for food manufacturing areas.

Applications

Starches and starchy samples - Standard and custom starch pasting tests for native starches of grains, roots, tubers and others. Custom high shear and extended temperature tests to monitor the production and end quality of modified starches for food, pharmaceutical, feed and industrial applications.

Milling and Baking - Grain soundness and bug damage, starch pasting quality for cakes, breads, batters, pasta and noodles, flour amylase, malt amylase, fungal amylase, antistaling, heat treatment of flour, wheat gluten quality and solvent retention capacity test.

Malting and Brewing - Predicting safe storage life for malting barley, rapid recording mashing system (and the effect of adding enzymes, adjuncts and chemicals to malts), monitoring the progression of malting, predicting barley malting quality and simulated industrial mashing process.

Formulated foods - Viscosity profile of products (premixes & ready to use) such as sauce, ketchup, gravy, dressing, mayonnaise, soup and other low viscosity foods formulated with starches, hydrocolloids & proteins. Melt tests such as chocolate and confectionery and "Miniature Pilot Plant" small scale emulation of manufacturing conditions.

Extruded and Cooked Foods - Starch transformation ("Degree of Cook") of ready to eat breakfast cereals, snack foods, pet foods, aqua feeds and animal feeds at preconditioner, extruder and finished product stages.

Dairy - Process cheese manufacture and melting profile, effect of drying temperature on milk protein powders, rennet caseinate rehydration, dairy beverages, custard, age thickening of sweetened condensed milk and "Miniature Pilot Plant" small scale manufacture of yogurt, ice cream mix and dairy desserts.

Ingredients - Viscosity development of proteins such as soy products, milk proteins, gluten, gelatin and egg whites. Hydration performance and gelling/thickening profile of a system during cooling to fingerprint hydrocolloid behaviour. Precise sample preparation for other types of rheological assessment.

RVA models include

RVA 4800

RVA 4800 is our top-of-the-range model which combines a wide viscosity range, exceptional sensitivity and accuracy, and an extended temperature range (up to 140°C). This makes the RVA 4800 a perfect tool for performing more relevant analyses for a variety of applications, including ingredient (eg. starch and hydrocolloid) performance under conditions relevant to ultra-high-temperature (UHT) pasteurization of dairy and food products, retorting, pressure cooking, extrusion and other aseptic processing conditions.

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RVA 4500

Designed for applications where the maximum temperature is 99.9C, the RVA 4500 offers the same performance as the RVA 4800.

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RVA StarchMaster 2

The RVA-StarchMaster2 operates stand-alone with four preset methods in the instrument. It's suitable for production, quality assurance, quality control, raw material testing and process control.

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RVA TecMaster

RVA TecMaster is a fully featured viscometer for analyzing most samples. 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 and "Miniature Pilot Plant" small scale process emulation.

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