RUŌOD Lab

Level 10 · Safety, IFRA, Regulatory Compliance and Quality

Incoming Quality Control: Study Guide

Read our guide to incoming checks, then write a simple goods-in routine, try it on the next material you receive and log a pass, hold or reject decision.

Professional 15 min study By the RUŌOD Lab team Updated

In short

Incoming quality control means checking what arrived before you use it: identity, lot, documents, condition, then an odor comparison against a retained sample of an approved lot. Even a small maker can do most of this with a scale, strips and a log. The guide sets out what to check. Here you turn that into a routine short enough that you will actually keep doing it.

What you will learn

  • Run a repeatable check on a delivered material
  • Decide among pass, hold and reject

Before this lesson: Finished Product Specification: Study Guide

What to look for as you read

  • Which checks need no equipment, and which do.
  • The difference between a certificate of analysis and an SDS.
  • What each of pass, hold and reject should lead to.

Practical exercise: Write and use a goods-in routine

About 40 minutes · You will have: a goods-in routine and one completed record

  1. Write a goods-in form on one page: date, supplier, material, CAS, lot, quantity, condition, documents received, odor comparison, decision and initials.
  2. Make a retained sample of your current lot of one important material.
  3. Use the form on your next delivery. Compare blind if you can.
  4. Write your rule for a hold: where the bottle goes, how it is marked and who you contact.

You have done this well if a material cannot enter your stock without a record, and you have stated what would make you hold it. Odor comparison cannot prove a material's identity or purity, so be clear about its limits.

Knowledge check

1. What should be checked first on receipt?
Show the answer

That the label, lot number and documents match the order. A document mismatch can stop you before you open anything.

2. Why compare with a retained sample of the last lot?
Show the answer

It reveals changes that the description cannot. Naturals in particular vary from lot to lot.

3. A delivered oil smells different from your previous lot. What should you do?
Show the answer

Hold it, query the supplier and test it before using it. Don't reject or release until you know what is going on.

Further reading and materials

Written and reviewed by the RUŌOD Lab team. This is general education, not legal, regulatory, medical or safety advice. Example dilutions and exercises are for learning, are not validated products, and have not been safety-assessed. Completing a lesson confers no qualification. How we check these lessons.