Home / How to prepare samples for lab testing
Last reviewed: September 2026 · Copy link
How to prepare samples for lab testing
The pre-submission checklist
- Samples from the production process, in final finishes and decorations.
- Every distinct material represented (each paint color, each fabric, each plastic).
- Quantities per the lab’s requirements (ask before shipping: destructive tests consume samples).
- A material list and the claimed age grade.
- Your contact details and the exact product name you want on the report.
What happens to your samples
Labs typically consume or alter samples during testing (drops, pulls, chemical extraction) and may keep records of them. Assume the samples are gone: never ship your only or best items, and photograph what you send.
Questions people ask
How many samples does a lab need?
It varies by test scope: simple chemical testing needs fewer samples than mechanical abuse testing. Ask the lab for sample counts per rule when you request the quote.
Can I send photos instead of samples for some materials?
Photos support the report but do not replace specimens for the required tests. Some supplier declarations can reduce scope: discuss with the lab.
Should samples be boxed or bare?
Pack samples so they arrive undamaged, and include the paperwork: damaged samples cause delays and re-quotes.
Related guides
CPSIA testing requirements, in plain English
Which CPSIA/CPSC testing rules apply to your children’s product, what third-party testing at a CPSC-accepted l…
How to choose a CPSC-accepted testing lab
Your CPC is only as good as its lab. How CPSC lab acceptance works, what to ask before quoting, price ranges, …
What a CPC certificate actually costs
The CPC document itself is free to issue. Real costs come from testing ($180–1,500+ per product), freelance dr…