Textile CMS Sample Request Register: 14 Fields Before a Carboxymethyl Starch Trial

Published 29 July 2026 · Manufacturer-owned technical checklist

Carboxymethyl starch (CMS) is a modified starch used as a functional material in textile preparation, printing, sizing and other water-based systems. A supplier sample should not be approved from a product name or one viscosity number alone. A useful trial record connects the exact sample and batch to its preparation method, solution condition, application observation and supporting documents. This lets a buyer compare two CMS samples on the same basis and preserves enough evidence to investigate a later production difference. The register below is designed for procurement and technical teams; it is not a universal recipe, an independent laboratory certificate or a substitute for a buyer's application trial.

Why a sample request needs a data register

The phrase “textile-grade CMS” can cover different intended functions, powder forms and performance ranges. If the buyer records only the supplier name and a viscosity value, the next sample may be impossible to compare. Concentration, water quality, temperature, hydration time, instrument, spindle and speed can all change the reported solution result. Printing-paste behaviour and finished-fabric observations introduce additional variables.

A register does not make unlike tests equivalent. It makes the differences visible before someone treats the numbers as interchangeable.

The 14 fields

No.	Field	What to record
1	Supplier identity	Legal company name, country and official contact channel
2	Product identity	Full grade or commercial designation, not “CMS” alone
3	Intended application	Printing, sizing, thickening, water retention or another defined trial
4	Sample reference	Supplier sample code and buyer's internal sample number
5	Batch reference	Batch or lot number shown on the sample or accompanying document
6	Physical form	Powder, granule or another observed form; note colour and obvious foreign matter
7	Preparation concentration	Mass of sample, mass or volume of water, and the calculation basis
8	Water condition	Water source or controlled quality used for the comparison
9	Preparation sequence	Addition order, mixing time, mixing speed and hydration/rest time
10	Test temperature	Preparation and measurement temperature, with the permitted tolerance
11	Instrument settings	Instrument model, spindle/rotor, speed and reading time
12	Application observations	Flow, dissolution, lumps, filtration, paste stability and relevant process notes
13	Document set	TDS, SDS/MSDS and batch COA received, including revision or issue date
14	Disposition	Approved, conditionally approved, rejected or additional trial required, with reviewer and date

Keep solution data separate from application results

Prepared-solution viscosity is one test result under one method. It does not by itself prove print definition, screen behaviour, wash-off, fabric handle, sizing performance or compatibility with every dye, pigment and auxiliary system. Record the solution result in one field and the application trial in another. This prevents a process observation from being presented later as if it were a supplier specification.

When comparing samples, use the same preparation and measurement method wherever the objective is a direct comparison. If the method changes, preserve both methods and label the results as separate series.

Connect documents to the physical sample

A TDS describes supplier-published product information. An SDS or MSDS supports hazard communication and handling. A COA normally refers to a particular batch and should be matched to the batch or lot reference on the physical sample. None of these documents replaces the buyer's own application trial.

Save the document filename, issue or revision date, and received date. If a sample is retained, record its storage location, container condition and remaining quantity. This creates a traceable path from the quotation and sample request to the test record and later purchase decision.

Questions to send with the next CMS inquiry

1. What is the complete grade name and intended textile application?
2. Which sample and batch references will appear on the package and COA?
3. Under what concentration, temperature, hydration time, instrument, spindle and speed is the supplier's viscosity range measured?
4. Which documents are available for the same grade and batch?
5. What packaging format and storage conditions apply to the commercial shipment?
6. Which observations should be confirmed in the buyer's own printing or sizing trial before approval?

Download the blank method-aware template

The Textile CMS viscosity comparison Dataset v1.1.0 provides a buyer-controlled record structure for the fields above. It adds optional water pH/hardness, method, calibration, torque, replicate, source-data and deviation references while keeping solution viscosity separate from application and finished-fabric observations.

The Dataset intentionally contains zero observations. It is not a supplier grade table, laboratory certificate, formula or claim that two recorded values are comparable. Populate it only with traceable evidence from the actual sample and declared method.

Manufacturer disclosure

This checklist is manufacturer-owned educational content prepared by Hangzhou KARN New Building Materials Co., Ltd. It describes recordkeeping questions for textile CMS buyers and does not claim independent certification, universal performance or a fixed formulation. Buyers should define their own acceptance criteria and confirm suitability in the intended process. Company and product-sourcing information is available from the official KARN website.