Table 1 Library of standards for pFTIR. Historic varnish recipes and additives applied to MirrIR low-e microscope slides

MirrIR.01

Test slide—no varnish

Control

MirrIR.02

Laropal K 80—standard varnish solution

Stand oil

750 g resin (BASF)

1200 mL white spirit

300 mL vegetable turpentine (Talens)

150 mL n-butylacetate

75 mL stand oil (Talens)

MirrIR.03

Laropal K 80—matt varnish solution

Stand oil + microcrystalline wax

400 mL standard varnish solution

1300 mL white spirit

90 g microcrystalline wax (Cosmolloid H80)

700 mL vegetable turpentine (Talens)

MirrIR.04

Laropal K 80—grade 5 varnish

Stand oil + microcrystalline wax

2 parts per vol. Standard varnish solution

1 part per vol. Matt varnish solution (shiny varnish)

MirrIR.05

Laropal K 80—grade 9 varnish

Stand oil + microcrystalline wax

1 part per vol. Standard varnish solution

1 part per vol. Matt varnish solution (semi-shiny varnish)

MirrIR.06

Dammar—standard varnish solution

1 part per vol. resin (Winsor and Newton)

3 parts per vol. white spirit

MirrIR.08

Laropal K 80—standard varnish solution

750 g resin (BASF)

1200 mL white spirit

300 mL vegetable turpentine (Talens)

150 mL n-butylacetate (no stand oil)

MirrIR.10

Stand oil

Stand oil (Talens)

MirrIR.11

Tinuvin 292

Tinuvin 292 (Ciba-Geigy)

MirrIR.12

Microcrystalline wax

Cosmolloid H80—melted on slide

MirrIR.13

Mastic standard varnish solution

1 part per vol. resin (Lascaux)

3 parts per vol. vegetable turpentine (Talens)