Fluid Intake and Wicking: Define the Test Before the Claim
Fluid Intake and Wicking: Define the Test Before the Claim. Product developers, QA and procurement teams
Fluid Intake and Wicking: Define the Test Before the Claim answers practical questions for product developers, QA and procurement teams about fluid intake rate, absorbed volume, wicking distance and surface wetness, and links the brief, evidence file and approved production specification.
Intake speed is not capacity
Intake speed describes how quickly liquid enters the surface; capacity describes how much the gusset can retain. A fast-wicking sample can still fail if the core saturates, so report both properties separately.
Fluid, dose and sample conditioning
Fix the test liquid, dose, temperature, sample size, gusset position and conditioning before comparing results. Record absorbed volume and time in the units used by the laboratory rather than a single pass/fail label.
Wicking paths and surface wetness
Map where liquid travels across the skin-contact layer and where surface wetness remains. Photographs and measured wicking distance help explain comfort and edge-creep risks that a capacity number alone misses.
Repeat dosing and wash comparison
Repeat dosing and compare washed with unwashed specimens using the same construction and sample preparation. Record cycle count and drying conditions so the result can be reproduced.
Agree the acceptance criterion
Set an internal acceptance criterion tied to the intended use and product brief. Keep raw values, sample identity and photographs; do not turn one bench result into a broad leakproof or absorbency claim.
Decision register
| Stage | What to record | Minimum evidence | Dependency |
|---|---|---|---|
| Intake speed is not capacity | Decision, reference and version | approved brief and scope note | BOM, material and certificate scope, test records and sample identity |
| Fluid, dose and sample conditioning | Decision, reference and version | dated specification, BOM or official-source note | BOM, material and certificate scope, test records and sample identity |
| Wicking paths and surface wetness | Decision, reference and version | sample, test or registration record for the named reference | BOM, material and certificate scope, test records and sample identity |
| Repeat dosing and wash comparison | Decision, reference and version | named approval, exception and change log | BOM, material and certificate scope, test records and sample identity |
| Agree the acceptance criterion | Decision, reference and version | RFQ or production-release pack for the next stage | BOM, material and certificate scope, test records and sample identity |
Project file to assemble
- Buyer focus: Product developers, QA and procurement teams.
- Page scope: fluid intake rate, absorbed volume, wicking distance and surface wetness.
- Evidence to assemble: for fluid intake rate, absorbed volume, wicking distance and surface wetness, approved brief and scope note; dated specification, BOM or official-source note; sample, test or registration record for the named reference; named approval, exception and change log; RFQ or production-release pack for the next stage.
- External dependencies: BOM, material and certificate scope, test records and sample identity.
- Next step: send a dated brief covering fluid intake rate, absorbed volume, wicking distance and surface wetness, the destination market and available documents for a feasibility review.
Buyer questions
What makes “Intake speed is not capacity” a usable test?
For fluid intake rate, absorbed volume, wicking distance and surface wetness: A usable test names the sample and version, BOM, method, units, conditioning, dose or load, number of repeats and acceptance rule. Results without those fields are difficult to reproduce or compare.
Can “Fluid, dose and sample conditioning” be approved from one sample?
For fluid intake rate, absorbed volume, wicking distance and surface wetness: Only for the version tested. The approval should state which size, colour, material and process were covered, and which production variation still needs verification.
When should the test be repeated?
For fluid intake rate, absorbed volume, wicking distance and surface wetness: Repeat it after a material, film, adhesive, seam, laundry instruction, supplier or construction change, or when the finished-garment sample differs from the tested specimen.
Related routes
Editorial review: 8 November 2026. This page describes a procurement method and does not replace legal, tax or regulatory advice.
Have a style in mind?
Send a sketch, tech pack or reference garment. We will reply with a development route.