The conformance statement
Updated
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The three wordings
"Conforms to ASTM Practice D-4236", or "Conforms to ASTM D-4236", or "Conforms to the health requirements of ASTM D-4236". The rule gives those three and says the statement may be combined with other conformance statements.
Where it should go
It should appear on the product wherever practical. The rule then names the alternatives: the individual product package, a display or sign at the point of purchase, separate explanatory literature available at the point of purchase, or a response to a formal request for bid or proposal.
Which matters for very small packages
A 30 ml ink bottle has little room, and the rule anticipates that by allowing the statement elsewhere. That is a genuine flexibility and it is why the phrase "wherever practical" is in there.
It is a statement about process, not safety
Conforming to D-4236 means the formulation went to a toxicologist and the labeling follows from the advice. It does not assert that the product is harmless, and reading it that way is the common misunderstanding among buyers.
Certifying organizations are optional
The rule notes that manufacturers or repackagers may wish to have compliance certified by a certifying organization and gives guidelines for one. A certification mark is therefore a private seal on top of a legal obligation, not a substitute for it.
Do not put it on something unreviewed
The statement asserts that a process happened. Printing it because competitors do, on a product no toxicologist has seen, is a false statement of conformance rather than a stylistic choice.
And revisit it on reformulation
If a producer or repackager reformulates, the new formulation must be evaluated and labeled in accordance with the standard. The conformance statement carries forward only if the review did.