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How do I send peptides for testing from the Netherlands?
The short answer
Netherlands to Spain is an intra-EU shipment: PostNL or any courier, no customs declaration, no duties. Create the order first so the vial travels with a task reference, then post the whole unopened vial in its original packaging at ambient temperature. Typical courier transit is one to three working days.
In detail
Nothing has to be declared inside the EU customs territory, so the parcel is treated as a domestic shipment on arrival in Spain. The only practical requirements are tracking, padding and a rigid outer box.
Cold shipping is unnecessary: lyophilised peptide is stable at ambient temperature over normal transit times. An express service shortens the queue by a day at most and changes nothing in the analysis.
Send the vial as sold, unopened, with its label and lot number visible, so the certificate can be tied to a real product rather than to an anonymous powder.
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