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Buying guides & supplier selection

How to source research chemicals for laboratory work: evaluating suppliers, comparing documentation, understanding pricing, ordering and European delivery.

Sourcing a reference material is a procurement decision. It involves a supplier check, a documentation check and a delivery check.

The guides in this topic walk through each of those steps. They are written for lab managers, purchasers and researchers who order analytical materials in the Netherlands and the wider EU.

Nothing here is advice on use. The focus is on how to buy, what to ask for and what a supplier should be able to provide in writing.

What this topic covers

  • How to assess whether a supplier is credible before placing a first order
  • Which documents to request, and what each document actually proves
  • How pricing works across pack sizes, and where bulk tiers make sense
  • What ordering, payment and EU delivery normally look like in practice

Guides in this topic

How to work through this topic

Start with the supplier, not the product

Read the supplier-selection guide first. It sets out the checks that apply to every order you place later.

Once those checks are clear, the pricing and ordering guides become much easier to apply.

Then confirm the paperwork

Every purchase should be traceable to a batch. The quality topic explains how a Certificate of Analysis supports that.

If a supplier cannot link a delivery to a batch number, treat that as a warning sign.

Other topics in the content hub

Quality, purity & analysisLaboratory practiceRegulation & complianceTerminology & ordering FAQ