Tested from the Bulk Lot
Specimens for our lab and samples for third-party labs are cut from the production lot that will be shipped, so the report describes the fabric you receive.
Knit Fabric Manufacturer Since 2009 · China
FABRIC TESTING & QUALITY CONTROL
Knit Fabric Testing in Our Own Lab
We test colour fastness and physical performance on every bulk lot, to ISO, AATCC and ASTM methods, using specimens cut from the fabric that will be shipped.
Tested from the bulk. Graded by two technicians.
Washing fastness
Measured grade 4 to 4-5
Methods
ISO · AATCC · ASTM
Test samples
Cut from the bulk lot
Before shipment
4-point inspection
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How We Test the Fabric You Buy
These three rules apply to every lot.
Tested Even Without a Request
If an order has no test specification, the bulk lot still gets in-house colour fastness checks before packing.
Graded by Two Technicians
Colour change and staining are graded against grey scales in a light booth. At least two technicians grade each specimen.
02
Inside Our Testing Lab
Colour fastness and physical tests on every bulk lot.
Our in-house lab runs the colour fastness and physical tests that knit fabric specifications ask for, to ISO, AATCC and ASTM methods. Each method has a written work instruction at the bench.
| Equipment | Used for |
|---|---|
| Launder tester with steel containers and balls | ISO 105-C06 / AATCC 61, ISO 105-C10 |
| Crockmeter, 16 mm finger | ISO 105-X12 / AATCC 8 |
| Perspiration tester, resin plates, 12.5 kPa weights, 37 °C oven | ISO 105-E04, ISO 105-E01 |
| Bursting tester with 25 mm and 38 mm balls | GB/T 19976 |
| Light booth, grey scales | Grading colour change and staining; lab dip assessment |
| Xenon arc light fastness tester, blue wool references | ISO 105-B02 / AATCC 16.3 |
| Pilling box with cork-lined tubes, viewing cabinet | ISO 12945-1 |
| Domestic washing machine and tumble dryer | ISO 6330 / ISO 5077 |
| pH meter | Aqueous-extract pH (GB/T 7573 / ISO 3071) |
| Oven and test pack for phenolic yellowing | ISO 105-X18 / GB/T 29778 |
03
Tests, Measured Ranges and Buyer Values
What our fabrics measure, next to values we see in buyer specifications.
| Test | ISO / AATCC / ASTM | Our measured range | Values in buyer specifications |
|---|---|---|---|
| Colour fastness to washing | ISO 105-C06 / AATCC 61 | Colour change grade 4 to 4-5 on our fabrics | Change 4-5; staining 4 |
| Colour fastness to rubbing | ISO 105-X12 / AATCC 8 | Dark cotton, wet: up to grade 3 | Dry 4; wet 3 (dark 2-3) |
| Pilling resistance | ISO 12945-1 / ASTM D3512 | Regular cotton knits: grade 3 and above; 4 is very good | Grade 4 at 14,400 rev; 4-5 at 10,800 rev |
“Our measured range” comes from our own test records on bulk lots. “Values in buyer specifications” are requirements we have received; the value that applies to your order is the one written into it. — Xiwen Zhang, Co-founder & CEO
04
From Bulk Lot to Shipment
Every step leaves a record that can be checked against the order.
Shade Check
The bulk lot is compared with the approved lab dip under the agreed light source.
In-House Testing
Specimens cut from the bulk lot are tested for the colour fastness and physical properties in the order.
Third-Party Testing
When required, samples from the same lot go to your nominated lab, such as SGS, Bureau Veritas or Intertek.
4-Point Inspection
Every roll is inspected before packing with the 4-point system (ASTM D5430).
05
Third-Party Test Reports
When an order needs an independent report, we send samples cut from the bulk lot to the lab you nominate.
Example: an SGS report on one of our chenille knit fabrics, tested to ISO 105-C06 (A2S, 40 °C), rated 4-5 for colour change and 4 to 4-5 for staining on all six fibres of the multifibre strip. The same report found no restricted aromatic amines from azo dyes (EN ISO 14362-1, REACH Annex XVII).
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Agree Test Requirements Before Production
Start from the End Use
Tell us the garment, care instructions and market. These decide which properties matter most.
Write Full Conditions
Method, procedure code, revolutions, wash and drying conditions, and shade groups.
Compare with Measured Data
We show our measured range for the fabric and shade, and options where there is a gap.
07
Fabric Testing Questions
Are your test samples cut from the bulk fabric?
Yes. Specimens for in-house tests and samples sent to third-party labs are cut from the production lot that will be shipped.
Do you test to AATCC as well as ISO?
Yes. Our lab runs ISO and AATCC colour fastness methods, and we test to the method named in your specification.
Can you send fabric to our nominated lab?
Yes. We send samples from the bulk lot to the lab you nominate, such as SGS, Bureau Veritas or Intertek, and share the report.
What colour fastness to washing do your fabrics reach?
Our fabrics typically measure grade 4 to 4-5 for colour change in ISO 105-C06. We confirm the expected result for your fabric and shade before the order.
What is the 4-point inspection system?
ASTM D5430: each visible defect gets 1 to 4 penalty points by length, and the total is reported per 100 square yards and compared with the agreed acceptance level.
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