Retained samples and traceability
A retained sample of every batch is kept in the laboratory and the batch number is printed on every pack. If you order for a repair years later, the full file of that batch is still available.
Quality control and laboratory
Every bag, the colour you saw in the catalogue
In a cellulose coating, quality means repeatability: a project applied today and a repair made years later must reach the same colour and texture. The Celomix quality-control department guarantees this in three stages, recording the result of every test.
Three stages of control
From the raw-material delivery to the bag ready to ship
Incoming raw materials
No material enters production without laboratory approval. Every delivery of cellulose fibre and silk, mica flakes, pigments and binder is compared with the supplier's reference sample.
- Moisture and length of the cellulose fibres
- Consistency and purity of the mica flakes and threads
- Pigments matched against the standard sample
- Quality and shelf life of the base binder
During production
Every colour code has a fixed formula, made up by the scale, not by eye. Samples are taken throughout mixing so that the fibres and flakes are spread evenly through the whole batch.
- Exact weighing of each formula component for every batch
- Checks on mixing consistency and the spread of flakes
- The batch colour compared with the reference sample under standard light
- Process conditions recorded in the batch file
Finished product
Before packing, a trial sample from every batch is applied on a standard surface to measure how the product really behaves on the wall.
- Coverage test: about 3 m² per kilogram
- Drying time: 8 to 24 hours
- Adhesion, an even surface and no cracking
- Exact pack weight and the batch number printed
What backs our quality
What makes quality provable
Colour accuracy, even in the digital catalogue
The colour of each code on the walls in our catalogue photos has been measured against the real sample of that code, and the difference (ΔE) is on average below 2, which the eye cannot see.
Independent laboratory testing
The Parsianik laboratory in Isfahan tested Celomix to ISO and ASTM standards: thermally insulating, sound-absorbing at higher frequencies, fire-retardant, non-toxic, light fastness grade 5 and more than 500 abrasion cycles.
The batch file
Keep the batch number from the bag
To repair or extend a wall, give the batch number to customer service. We will send you the same formula and, if it is in stock, the same batch, so the line between old and new work cannot be seen.
CELOMIX
- Colour code
- 137 · IVORY SILK
- Line
- Silk
- Batch number
- B-0000-000
- Production date
- —
- Net weight
- — kg
A sample label; send us the real design of the bag label.