Receiving Inspection for Desiccant Cards: A Checklist for QA Teams

By ATMOSIScienceNov 11, 2026

Quick answer: Inspect desiccant cards at receiving with a short checklist: check the carton label and MFG date, confirm the inner packaging is sealed and undamaged, check dimensions and print against your approved spec, give a sample card a gentle bend test (a fresh card feels relatively stiff), and move accepted stock into sealed, cool, dry storage with the oldest MFG date first. Do not use cards from damaged inner packaging. Unopened cards keep 12 months from the manufacturing date.

A desiccant is a small component, but it arrives like any other packaging material and deserves a short, repeatable inspection. The checklist below is written for receiving and QA teams at brands and contract manufacturers. Copy it into your own inspection form and adjust it to your spec.

A tall stack of round Fiber Desiccant Cards loaded in an automated feeder — Fiber Desiccant Cards ready for automated placement | ATMOSIScience

The checklist

Desiccant card receiving inspection

Paperwork: delivery matches the purchase order: item, card spec, print version and quantity
Carton condition: no crushing, tears or signs of water damage
Carton label: MFG date present and readable; record it
Shelf life: 12 months from the MFG date, unopened and in the original sealed packaging; confirm the stock will be used within it
Inner packaging: sealed and intact; reject cards from damaged inner packaging
Dimensions: on a small sample, check shape, diameter and thickness (0.7 or 1.0 mm) against the approved spec
Print: logo, do-not-eat line and print side match the approved artwork
Freshness: gently bend a sample card; a fresh card feels relatively stiff
Reseal: reseal any bag opened for sampling, within the open-air limits
Record and release: lot, MFG date, result and inspector

Where to find the MFG date

The manufacturing date is printed on the carton label, outside the shipping box and next to the shipping label. Record it on receipt so stock can be used oldest first.

Sampling without wasting stock

Open as few inner bags as you need for the dimension, print and bend checks
Keep sampled bags within the open-air limits: up to 2 hours at 50% RH or below, up to 1 hour above that, and stop at 80% RH or above; if work pauses for more than 30 minutes, reseal the unused cards in a sealed bag
Mark any opened bag so the line uses it first

Chart of how long fiber desiccant can stay open to room air at different humidity levels — Open-air limits by room humidity | ATMOSIScience

If your QA team runs a lab check

Some QA teams add a lab check to the first deliveries. Ask us for the spec values for the card you buy, and agree the method with us before the first delivery so results can be compared.

Storage after release

Keep cartons and inner bags sealed until the line needs them
Store in a cool, dry place, away from direct moisture
Use the oldest MFG date first
Do not store opened bags next to the line overnight; reseal them in a sealed bag

If something is off

Finding	Action
Inner packaging damaged	Do not use the cards from that packaging; contact the supplier
Cards feel noticeably soft	Set the lot aside and contact the supplier with the MFG date
Print or dimension differs from the spec	Hold the lot and send photos with the carton label
MFG date missing or unreadable	Hold and ask the supplier to confirm the date

Frequently asked questions

What should we check when desiccant cards arrive?

Carton condition and label, MFG date, sealed inner packaging, dimensions and print against your spec, and a bend test on a sample card.

How long do unopened cards keep?

12 months from the manufacturing date, unopened and in the original sealed packaging.

What if the inner packaging is damaged?

Do not use cards from damaged inner packaging. Contact the supplier.

How do we check freshness without a lab?

Gently bend a sample card: a fresh card feels relatively stiff, and one that has gone noticeably soft has absorbed moisture and should be swapped out.