Reviewed by KARN Textile Chemicals product team Published July 2026
What is the confirmed KARN flake viscosity method
KARN measures the confirmed K5 K6 and K9 flake viscosity values on a 5 percent solution using an NDJ 8 rotational viscometer with spindle number 4 at 6 r min Each published range is plus or minus 10 percent from the nominal value
Which product form does this method cover
The values on this page apply only to the identified flake grades They do not define powder specifications and they do not confirm suitability for a textile printing process
Check a measured flake viscosity result
Choose the matching KARN flake grade and enter the measured viscosity only when all published test conditions are the same
- K5 Nominal 24000 mPa s Confirmed range 21600 to 26400 mPa s
- K6 Nominal 34000 mPa s Confirmed range 30600 to 37400 mPa s
- K9 Nominal 42000 mPa s Confirmed range 37800 to 46200 mPa s
This checker compares one number with the published flake range It does not validate powder material test preparation batch identity or printing suitability
Machine readable flake range data
Download the same confirmed flake values and test conditions for technical review procurement records and source verification
Confirmed flake viscosity values
Use the same grade form concentration instrument spindle and speed before comparing a result with the published range
| Grade | Raw material | DS | Nominal viscosity | Confirmed range |
|---|---|---|---|---|
| K5 | Tapioca CMS | 0.3 | 24000 mPa s | 21600 to 26400 mPa s |
| K6 | Tapioca CMS | 0.4 | 34000 mPa s | 30600 to 37400 mPa s |
| K9 | Potato CMS | 0.4 | 42000 mPa s | 37800 to 46200 mPa s |
Method parameters that must stay together
A viscosity number is not comparable when the material identity or measurement conditions differ
- Flake product form
- 5 percent solution
- NDJ 8 rotational viscometer
- Spindle number 4
- 6 r min
- Plus or minus 10 percent from nominal
What should be recorded with a trial result
Keep enough context for purchasing laboratory and production teams to identify what was actually compared
- K5 K6 or K9 grade
- Powder or flake form
- Sample or batch reference
- Solution concentration
- Viscometer model and spindle
- Rotational speed
- Preparation and measurement time
- Observed viscosity result
- Textile printing trial context
What this page does not confirm
This method page is not a TDS SDS COA batch record or grade suitability approval Request the current document for the selected grade and form before a production decision
Download the bilingual sample evaluation worksheet Open the sample and TDS request checklist Compare K5 K6 and K9 Review priority export markets Request the current TDS