Table 2 The uniformity of metal ion and colour distribution in unaged substitute textiles determined using XRF and spectrophotometry, respectively
Sample | XRFa (elemental ratios) | Colour measurement | |||
|---|---|---|---|---|---|
| Â | Fe | Cu | L* | a* | b* |
Wool undyed (WU) | 12 (1)b | 5 (1) | 78.39 (0.39) | −1.06 (0.04) | 6.67 (0.24) |
Wool dyed with p1 (Wp1) | 590 (60) | 11 (1) | 33.53 (1.03) | 1.31 (0.04) | −1.11 (0.12) |
Wool dyed with p2 (Wp2) | 786 (68) | 333 (27) | 31.03 (0.79) | 0.93 (0.07) | −1.05 (0.18) |
Silk undyed (SU) | 17 (2) | 4 (1) | 75.36 (0.36) | −0.20 (0.02) | 0.97 (0.12) |
Silk dyed with p1 (Sp1) | 2124 (526) | 9 (5) | 20.75 (0.37) | 1.46 (0.03) | −3.90 (0.09) |
Silk dyed with p2 (Sp2) | 2413 (292) | 204 (26) | 18.76 (0.30) | 1.61 (0.03) | −4.37 (0.07) |
Silk dyed with p3 (Sp3) | 2628 (145) | 11 (10) | 17.79 (0.20) | 1.38 (0.03) | −4.09 (0.07) |
Abaca undyed (AU) | 24 (5) | 4 (3) | 74.25 (1.66) | 1.91 (0.41) | 13.56 (1.09) |
Abaca dyed with c1 (Ac1) | 1459 (338) | 9 (2) | 21.66 (0.75) | 0.56 (0.05) | −2.22 (0.12) |
Abaca dyed with c2 (Ac2) | 1490 (190) | 371 (53) | 23.34 (0.83) | 0.50 (0.04) | −2.65 (0.17) |
Cotton undyed (CU) | 15 (1) | 3 (1) | 84.31 (0.51) | −0.26 (0.02) | 0.67 (0.09) |
Cotton dyed with c1 (Cc1) | 683 (145) | 5 (3) | 35.7 (0.91) | 0.70 (0.06) | −4.33 (0.15) |
Cotton dyed with c2 (Cc2) | 742 (41) | 83 (11) | 33.58 (0.50) | 0.80 (0.04) | −4.89 (0.12) |
Cotton dyed with c3 (Cc3) | 1115 (44) | 3 (3) | 29.61 (1.01) | 0.57 (0.05) | −4.62 (0.13) |
Black silk (1881,0802.158 or PRN: RRM 10294c) | 2370 | 587 | NDd | ND | ND |
Black dyed North American skin bag (1937,0617.1c) | 4163 | 44 | ND | ND | ND |
Brown braided area of modern piu piu owned     by Dr Vincent Daniels (Figure 2) | 1918 | 2 | ND | ND | ND |
Black fibres of broken Maori cloak and piu piu     from the Horniman Museum (Figure 3) | 5924 | 3 | ND | ND | ND |