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Table 2 Samples used to test the SCOAP plastics reference database and their correlations to reference plastics

From: Determination of the polymer composition of mid-twentieth century purses by Raman spectroscopy

Sample ID

Known composition (pigment)

Correlation match quality (reference)

ChromaAC24030

Acrylonitrile–butadiene–styrene terpolymer (25.5% TiO2)

97.0% (acrylonitrile–butadiene–styrene)

ChromaHC2200B

Polystyrene (26.5% TiO2 + 13%CaCO3)

99.0% (polystyrene)

ChromaNC2667A

Nylon (32% TiO2)

93.3% (nylon-6)

ChromaZC2606B

Polycarbonate (23% TiO2)

97.0% (polycarbonate)

RecycleCode1 (bottle)

Polyethylene terephthalate (colorless)

96.6% (polyethylene terephthalate)

RecycleCode2 (tub)

High-density polyethylene (white pigment)

98.8% (high-density polyethylene)

RecycleCode5 (bottle)

Polypropylene (colorless)

98.9% (polypropylene)