The IDDSI funnel is a device designed to measure the viscosity of liquids intended for patients with dysphagia in a standardized manner, in accordance with the IDDSI (International Dysphagia Diet Standardization Initiative) framework. It replaces the previous syringe method and significantly simplifies the clinical assessment of consistency levels, making the tests more accessible, faster, and repeatable
A validation study from 2024, on 73 different samples, showed that the funnel’s results correspond to 92% of those obtained using a syringe (model BD 303134), with a negligible average difference of 0.2 mL. This demonstrates that the funnel is a reliable and accurate system.
How to Use the IDDSI Funnel Correctly
Preparing the liquid and the funnel
- Make sure the liquid is thoroughly mixed and at the right temperature.
- Use the official IDDSI funnel, which includes a 10-mL syringe and a funnel, eliminating the need for additional tools
Funnel conversion
- Slowly fill the syringe to the 10 mL mark.
- Start the test: hold the funnel syringe upright and allow the liquid to flow by gravity alone.
Timing and Measurement
- Let it run for exactly 10 seconds, then close the lower outlet.
- Measure how much fluid remains.
If it takes between 6.5 and 7.2 seconds for the tank to empty completely, the level is acceptable
Interpretation of the results
The residual volume corresponds to the IDDSI level:
Residual volume (mL) IDDSI level Description
0–1 Liquid Water / non-viscous
1–4 Slightly viscous Behaves like a slightly viscous liquid
4–8 Nectar Nectar-like viscosity
8 Honey Honey-like viscosity
Note: These are approximate values; always refer to the official IDDSI tables.
Repeatability and quality control
Repeat the test at least three times to confirm the consistency.
If the results fall outside the standard range in more than three tests, investigate using a micro-densitometer or reject the liquid
Hands-on demonstration
This video provides a step-by-step demonstration of the flow test using the IDDSI funnel.
Benefits for healthcare facilities and nursing homes
- Standardization and Safety
Thanks to the Funnel, it is possible to accurately determine the viscosity level, thereby reducing the risk of suction and increasing feeding safety.
Operational EfficiencyFaster and easier to use than a syringe, the funnel supports the work of staff in the kitchen or on the ward.
Hands-On TrainingThe funnel is an excellent tool for training professionals—from kitchen staff to caregivers—using a straightforward and intuitive method.- Quality of Care
The Funnel helps ensure consistency between meal ordering, preparation, and serving; it promotes a multidisciplinary approach and improves patient compliance.
Buy the funnel and download the instructions!
Would you like to learn how to use it step by step or try it out at your facility?
Download the instructions and order the funnel here:
IDDSI Funnel for the IDDSI Flow Test
The IDDSI Funnel isthe only funnel designed to properly perform the IDDSI Flow Test. Simply pour the liquid into the funnel and read the test result. The funnel is reusable and recyclable after being washed according to the provided instructions.
Io Sano | Solutions for Dysphagia is an authorized distributor of IDDSI Funnels in Italy and the European Union.
The Funnel is sold in boxes of 10 pieces each. Once your order is complete, you will receive a confirmation email, and your order will then be processed and shipped (you will receive a separate email with the tracking information). Delivery takes approximately 7–10 days.
Would you like to learn more or train your staff? Io Sano is the authorized European distributor for IDDSI funnels. Contact us for consultation, purchases, targeted training, and access to official guidelines.
