Recommended Results

Detergents | ViscoQC™ Quality Control of Dishwashing Detergents

Analyzing the viscosity of liquid dishwashers at different speeds shows you how the detergent behaves during e.g. squeezing it out of the bottle. This application report can offer you a brief insight on typical measurements with the ViscoQC™ 100.

Introduction

A rotational viscometer like the ViscoQC™ 100 is commonly used for the quality control of detergents. The viscosity of the detergent has influence of its flow behavior.

A well performing hand dishwasher should provide convenient dispersing and adequate aesthetic appeal to satisfy the user. For automated dosage systems of dishwashers, proper pumpability of the detergent with water is important.

Quick single point viscosity checks at one or at different speeds to study the shear thinning behavior of detergents are possible with ViscoQC™ 100. Shear thinning means that the viscosity decreases by increasing the speed.

Experiment

  • Instrument: ViscoQC™ 100 - L
  • Spindle: L2
  • Guard: L
  • Speed: 12 rpm, 20 rpm, 30 rpm, 40 rpm, 50 rpm
  • Temperature: 23 °C
  • Sample: Liquid hand dishwashing agent

All measurements were performed with ViscoQC™ 100 - L rotational viscometer from Anton Paar GmbH according to ISO 2555.
ViscoQC™ 100 - L is suited for a viscosity range of 1 to 6 000 000 mPa.s.

ISO 2555 is a standard test method for testing resins in liquid state or as emulsions or dispersions by a rotational (spindle-type) viscometer. This standard can also be applied for other non-Newtonian liquids such as the kind of measured substance.

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