Final answer:
The IDDSI flow test does not have specific millimeters and time duration identified in the provided context, but standard procedures typically involve a syringe test measuring the flow of liquid in milliliters over a set time period.
Step-by-step explanation:
The International Dysphagia Diet Standardisation Initiative (IDDSI) flow test is used to classify the flow rate of liquids for dietary purposes. The precise millimeters to test and duration in seconds are not provided within the context of the provided information. Typically, the IDDSI flow test involves measuring the flow of a specific volume through a syringe over a set period of time. For example, a 10ml syringe test where you would measure how much liquid can be pushed out of a syringe in 10 seconds to test against the different levels IDDSI has for liquid consistencies. Therefore, it is crucial to follow a standard procedure outlined by IDDSI to determine these measurements properly. Using milliliters as the unit of measurement is suitable for most liquid flow tests as it provides a way to accurately measure larger volumes fluidly and with precision.