Fish collagen stick packs can show two different problems. The dry blend may already be clumped when the pack is opened, or free-flowing powder may form lumps when it hits water. Open an affected stick and a retained comparison stick before mixing either. Record the dry condition first, then prepare both using the same serving instructions. This gives your team a starting point for checking the incoming lot, the packing line or the drink preparation.
Where did the clumps first appear?
| Observation | Check next |
|---|---|
| Incoming collagen powder is already clumped | Compare the opened container with an unopened retain from the same lot. Review the storage history and supplier’s lot documents. |
| Incoming powder flows, but the finished dry blend clumps before filling | Review blend hold time and the handling records. Check the other ingredients as well as the collagen. |
| Fresh packs flow, but retained packs later clump | Compare sealed retains from the same run. Ask packaging QA to review seal integrity, film specification and storage records. |
| Dry powder flows, but lumps form in the prepared drink | Repeat the intended preparation using the same water temperature, serving volume, addition order and mixing instructions. |
Compare samples from the same lot and blend revision where possible. If you change the film, flavor and ingredient grade together, keep records for each change. A controlled follow-up that changes one factor gives the team a clearer basis for deciding what to fix.
Which numbers help with the investigation?
Ask for the moisture method and result on the offered lot’s certificate of analysis (COA). Your QA team may also want water activity data on the finished blend or retained packs. Keep those results as separate fields. Moisture content describes the amount of water under the stated test, while water activity is the ratio of the product’s equilibrium water vapor pressure to that of pure water at the same temperature. FDA overview of water activity Ask for the bulk density method if fill weight or stick dimensions are part of the investigation. Compare loose and tapped density only with their methods identified.
A pilot study on fish collagen hydrolysate encapsulated with maltodextrin reported changes in hygroscopicity and solubility in the materials it tested. The study is a reason to evaluate the actual grade and the complete blend when comparing options. For a change in carrier or particle format, request the revised ingredient declaration and rerun the drink comparison. Fish collagen hydrolysate pilot study
What should the co-packer record?
Capture the affected pack and ingredient lot codes, fill date, observed clump condition, storage history and the result of a side-by-side preparation. Agree on acceptance criteria for both the unopened stick and the prepared drink, then validate them in the intended package. Fish collagen drink sourcing guide
If you are comparing grades, include the intended stick size, beverage preparation and target market in your request.
We are investigating clumping in a fish collagen drink mix for [market]. Please send the offered lot COA, moisture method and available bulk density data. Our stick size is [size], and the product is prepared using [instructions].
Post time: Nov-13-2026
