Cosmetics, Pharma | Rotational Viscosity Testing of Hand Sanitizer with Visco
The analysis of the flow behavior is particularly important for the formulation of hand sanitizer gel. ViscoQC is perfectly suited for quality control checks to ensure a high-quality product.
Transmission of pathogens takes place through direct and indirect contact, droplets and air, where transmission through contaminated hands is the most common pattern. Hand sanitizers are antimicrobial substances (liquid or gel) designed to deactivate or destroy microorganisms (bacteria or viruses). These substances are usually based on alcohol products e.g. ethanol or propyl alcohol. Furthermore, products like glycerin are added to moisturize the skin and sustain its natural barrier. Gelling agents are added to create a hand sanitizer gel having several advantages over a liquid formulation:
- Does not tend to spill
- Volume can be easily controlled
- Prevents drying out users’ skin
- Remains in the palm
- Evenly spreadable
To obtain the above-mentioned advantages, the gel must have a suitable flow behavior. Further, quality control checks of the viscosity ensure a consistent high-quality of the product to satisfy customers. The rotational viscometer ViscoQC 100 and ViscoQC 300 are ideally suited to test the viscosity of hand sanitizer.
Experiment
| Instrument | ViscoQC 100 - L | ViscoQC 300 - L | |
|---|---|---|---|
| Test type | Single-point | Multi-point | |
| Spindle | DG26 | L2 + spindle guard L | CC12 |
| Speed in rpm | 125 | 5 to 65 | |
| Temperature device | PTD 80 | none | PTD 80 |
| Temperature in °C | 22 | ambient temp. (approx. 22) | 22 |
| Sample | Hand sanitizer liquid | Hand sanitizer gel | |
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