as reference vs. as a reference

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi, which of these is correct?

Please send me a piece of your materials as reference.
Please send me a piece of your materials as a reference.

Many thanks,
Torsten

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2

Written, photographic, etc. material:
Please send me some/a sample of your material as a reference.

Actual manufacturing material (the material something is made of):
Please send me a piece of the material you use as a reference.

1 Like
3

Makes sense. Thank you very much for your swift response.

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