Starch is one of the most widely used functional ingredients in the food, paper, textile, and adhesive industries. Whether sourcing native starches or engineering modified variants, manufacturers need fast, reliable methods to verify pasting behaviour, batch consistency, and fitness for purpose. The Rapid Visco Analyser (RVA) provides a complete viscosity profile in minutes, replacing hours of traditional testing. It supports starch manufacturers producing and specifying native and modified starches, and the converters downstream who buy them. That includes food formulators developing sauces, soups, dairy, and confectionery products, as well as the paper, textile, and adhesive industries that depend on consistent starch performance.

Industry Challenges
 

• Batch-to-batch variability in starch supply leading to inconsistent end-product quality and costly rework
• Slow, labour-intensive traditional methods that bottleneck production decisions
• Difficulty differentiating modification levels in chemically or physically treated starches
• Predicting starch performance under real processing conditions such as high temperature, shear, and acidic pH
• Managing a diverse portfolio of starch types (corn, potato, waxy, tapioca, sweet potato) with a single instrument

How the RVA Solves These Problems

The RVA heats and cools a starch slurry under controlled shear, generating a complete pasting curve in as little as 13 minutes. The resulting profile — peak viscosity, breakdown, setback, final viscosity, and pasting temperature — is a functional fingerprint that tells you exactly how a starch will behave in your process.

For native starches, this means you can screen every incoming batch at goods-reception and compare it against your specification before it enters production. Whether you are working with corn, potato, sweet potato, or tapioca, the RVA handles them all with optimised profiles tuned to each starch type's unique swelling and breakdown behaviour.

For modified starches, extended-hold profiles differentiate cross-linked, substituted, acid-thinned, and other chemically treated starches by their response to prolonged heating, cooling, and shear. You can verify that the modification level is what the supplier claims, and predict how the starch will perform in specific applications — from paper sizing to retorted sauces — without running full-scale trials.

When your process involves temperatures above 100°C — think UHT, retort, or extrusion — the RVA's high-temperature capability extends testing to 140°C, so you can qualify ingredients under the actual conditions they will face on the production line.
 

Related RVA Methods

The RVA comes with a library of standard methods that can be used as-is for known applications, or as a starting point for developing your own product-specific test profiles.

*Requires the RVA 4800, which provides high-temperature testing up to 140°C.

  Key Benefits 
 

• ✓ Complete pasting profile in 13–35 minutes — replaces hour-long traditional tests
• ✓ Single instrument covers native, modified, and pregelatinised starches across all botanical sources
• ✓ High-temperature capability (up to 140°C) simulates real industrial processing conditions
• ✓ Small sample sizes (2–9 g) enable testing during product development and breeding programmes
• ✓ Internationally standardised (AACC 76-21, ICC 162) for traceable, comparable results