The IDDSI funnel is a device designed to measure in a standardized way the viscosity of fluids intended for patients with dysphagia, according to the International Dysphagia Diet Standardization Initiative (IDDSI) framework. It replaces the previous syringe method and significantly simplifies caregiver verification of consistency levels, making testing more accessible, rapid and repeatable
A 2024 validation study of 73 different samples showed that funnel results matched 92% with that obtained by syringe (model BD 303134), with a negligible average difference of 0.2 mL remaining. This shows that the funnel is a reliable and accurate system.
How to use the IDDSI funnel correctly
Liquid and funnel preparation
- Ensure that the liquid is well mixed and suitable temperature.
- Use the official IDDSI funnel, which integrates a 10 mL syringe and funnel, without the need for additional tools
Pouring into the funnel
- Slowly fill the syringe to the 10 mL mark.
- Start the test: place the funnel syringe vertically, let the liquid flow by gravity only.
Timing and measurement
- Let it run for exactly 10 seconds, then close the lower outlet.
- Measure how much liquid remains.
If the residue is between 6.5 and 7.2 seconds for complete emptying, the level is valid
Interpretation of results
The residual volume identifies the IDDSI level:
Residual volume (mL) IDDSI level Description
0-1 Liquid Water/unthickened
1-4 Slightly thickened Behave as slightly viscous liquid
4-8 Nectar-like liquid density
8 Honey-like thick liquid
Notes: guideline values, always follow official IDDSI tables.
Repeatability and quality control
Repeat the test at least three times to confirm consistency.
If the times go outside the standard range in more than 3 tests, investigate with micro-densimeter or reject the liquid
Practical demonstration
In this video, the flow test with the IDDSI funnel is shown step by step.
Benefits for health care facilities and RSAs
- Standardization and safety
Thanks to Funnel, it is possible to accurately identify the viscosity level what to reduce the risk of aspiration, increasing the safety of feeding. - Operational efficiency
Faster and easier than syringe use, the funnel supports the work of staff in the kitchen or department. - Hands-on training
The funnel is a great tool for training professionals-from kitchen workers to caregivers-with an immediate and intuitive method. - Quality of Care
Funnel helps ensure consistency between prescription, preparation, and meal delivery enhances the multidisciplinary approach and improves patient compliance.
Purchase the funnel and download the instructions!
Want to know how to use it step by step or try it out in your facility?
Download the instructions and order the funnel here:
IDDSI Funnel for IDDSI Flow Test
The IDDSI FUNNEL is theonly funnel designed to correctly perform the IDDSI Flow Test. Simply pour the liquids into the funnel and display the test result. The funnel is reusable and recyclable after proper washing according to the instructions provided.
Io Sano | Dysphagia Solutions is an authorized distributor of IDDSI Funnels in Italy and the European Union.
The Funnel is distributed in boxes of 10 pieces each. Once the order is completed you will receive a confirmation email and then the order will be taken care of and shipped (you will receive an email with tracking separately). Delivery time is approximately 7 to 10 days.
Want to learn more or train your staff? Io Sano is an authorized distributor for Europe of IDDSI Funnels. Write us for advice, purchase, targeted training and access to official guidelines.
