Watercolor lightfastness 2003 - results
keith o'connor (tinmangallery.com
I'll pass this information on.
--
take care: Keith
The eye should not be lead where there is nothing to see.
Robert Henri - The Art Spirit
"dkra" <pottedme...@ix.netcom.com> wrote in message
news:pottedmeatproduct...@user-2ivflkt.dialup.mindspring.com..
.
> x-no-archive: yes
>
> Here is the second round of lightfastness testing of watercolor paints I
> began last October.
>
> Paint swatches were prepared July-September and stored in a dark drawer
> until mounted.
>
> ******
> Testing method:
>
> For tube color, measure out pea-sized dab of tube color mixed with water,
> and charge brush thoroughly.
> For pan color, charge brush thoroughly.
> Lay out color (masstone to tint) in 1" x 3" swatch with wash brush (used
> Loew Cornell Comfort 3550 Wash brush, 1" flat acrylic) on Arches 140-lb.
> cold-pressed 100% cotton rag paper.
> Let swatch dry. Cut in two (long way) along center line.
> Mount one half of swatch (test) with tape (back only) or glue on acid-free
> paper and
> fasten to windowpane in sunny window.
> Mount blue wool scale fade strips along with color test strips.
> Note: Lightfastness of wool test strip ascends by ordinal value.
>
> ASTM D4303-99 Standard Test Methods for Lightfastness of Pigments Used in
> Artists' Paints
>
<http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/PAGES/D4303.htm?L+my
store+evwj6945+966970847>
>
> ASTM D5067-99 Standard Specification for Artists' Watercolor Paints
>
<http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/PAGES/D5067.htm?L+my
store+tsuc6675>
>
> Store other half of swatch in a plastic bag, place in a dark,
> seldom-accessed desk drawer.
> Check swatches periodically for color changes.
> Compare with fading of blue wool scale strips 1-3.
> Testing should be about 6 months total during sunniest months (Northern
> Hemisphere).
>
> Location: northwest-facing window of my apartment
> Date exposed: 10-06-2002 (October 6, 2002)
> Date reference #3 began to fade: 11-02-2002
> Date completed: 4-17-2003, when strip #6 began to change color.
>
> Unless otherwise indicated, all paints tested were "artists'" quality (not
> student range).
>
> Unless otherwise indicated, all paints tested were tube paints; pan paints
> are indicated with a "#" sign.
>
> Discontinued (D) brands and colors also tested:
> Sakura (Impellist)
> Pebeo (Fragonard)
> Shiva (Creative Arts)
> Shiva (Contemporary)
> Liquitex (Color Index number estimated from listed contents on tube)
> Permanent Pigments (Color Index number estimated from listed contents on
tube)
> Rowney Artists (now Daler-Rowney)
> Winsor & Newton old stock (pre-1996). Colors marked as discontinued (D)
> in this list are from pre-1996 stock. Though the color name may have been
> retained in 1996 and later stock, the older tubes and pans may have
> different pigment composition and quality. Some of these tubes and pans
> are marked "SL" for "Selected List," a label term for its watercolors
> rated AA and A for permanence, which Winsor & Newton discontinued in
> 1996.
> Note that some older colors did not have the Selected List label; these
> (marked "**") (Carmine, Hooker's Green Light, Mauve, and Gamboge) were
> known to be fugitive.
>
>
============================================================================
====================
> # Brand Name and number CI
> Name Comments
>
============================================================================
====================
>
> 001 Daniel Smith Genuine Lapis Lazuli 036
> PB-N/A No change
> 002 Pebeo Fragonard (D) Cyanin Blue 231
> PB15 No change
> 003 Sennelier Phthalo Blue 326
> PB15 No change
> 004 Utrecht Phthalo Blue 28154
> PB15 No change
> 005 Winsor & Newton# Winsor Blue (RS) 709
> PB15 No change
> 006 Winsor & Newton Winsor Blue (RS) 709
> PB15 No change
> 007 Winsor & Newton# (D) Winsor Blue 706 SL
> PB15 No change
> 008 Yarka# Russian Blue 204 PB15
> (?) No change
> 009 Winsor & Newton Neutral Tint 430
> PB15+PBk6+PV19 No change
> 010 Winsor & Newton Payne's Gray 465
> PB15+PBk6+PV19 No change
> 011 Sennelier# Cinerous Blue 344
> PB15+PW6 No change
> 012 Old Holland Old Holland Blue C223
> PB15 No change
> 013 Old Holland Blue Lake B229
> PB15 No change
> 014 Old Holland Scheveningen Blue Deep B226
> PB15 No change
> 015 MaimeriBlu Berlin Blue 359
> PB15:1 No change
> 016 Schmincke Phthalo Blue 484
> PB15:1 No change
> 017 Blockx# Blockx Blue 254
> PB15:1 No change
> 018 Blockx Blockx Blue 254
> PB15:1 No change
> 019 Holbein Irodori Antique Bronze Blue 020
> PB15:2 No change
> 020 M. Graham Phthalocyanine Blue 140
> PB15:3 No change
> 021 Schmincke# Helio Blue Reddish 478
> PB15:6 No change
> 022 Schmincke Helio Blue Reddish 478
> PB15:6 No change
> 023 Perm. Pigments (D) Phthalocyanine Blue 316 PB15:6
> (?) No change
> 024 Holbein Marine Blue W102 PB16
> Tiny bit lighter
> 025 MaimeriBlu Turquoise Green 350
> PB16 No change
> 026 Holbein Peacock Blue W101
> PB17 No change
> 027 Daniel Smith Prussian Blue 082 PB27
> Lighter midtone & tint
> 028 Schmincke Prussian Blue 492 PB27
> Ligher overall
> 029 Sennelier Prussian Blue 318 PB27
> Very faded
> 030 Talens Rembrandt Prussian Blue 508 PB27
> Slightly faded
> 031 Winsor & Newton (D) Prussian Blue 036 SL PB27
> Faded midtone & tint
> 032 Grumbacher Finest Prussian Blue W168 PB27:1
> Faded in tint only
> 033 Old Holland Prussian Blue Paris Extra A34 PB27:1+PB15
> Moderate fade overall
> 034 M. Graham Cobalt Blue 090
> PB28 No change
> 035 Schmincke Cobalt Blue Light 487
> PB28 No change
> 036 Sennelier# Cobalt Blue 307
> PB28 No change
> 037 Sennelier Cobalt Blue 307
> PB28 No change
> 038 Winsor & Newton Cobalt Blue 178
> PB28 No change
> 039 Yarka# Cobalt Blue 203 PB28
> (?) No change
> 040 Sennelier# Cobalt Green 856
> PB28+PG7+PW6 No change
> 041 Blockx# Cobalt Blue 352
> PB28 No change
> 042 Blockx Cobalt Blue 352
> PB28 No change
> 043 Schmincke Ultramarine Finest 494
> PB29 No change
> 044 Sennelier# Ultramarine Deep 315
> PB29 No change
> 045 Utrecht Ultramarine Blue 28151
> PB29 No change
> 046 Winsor & Newton# French Ultramarine 263 PB29
> Lighter in tint
> 047 Winsor & Newton French Ultramarine 263
> PB29 No change
> 048 Winsor & Newton (D) Permanent Blue 473 SL
> PB29 No change
> 049 Winsor & Newton (D) French Ultramarine 068 SL
> PB29 No change
> 050 Yarka# Ultramarine 202 PB29
> (?) No change
> 051 Blockx# Ultramarine Blue Deep 253 PB29
> Lighter in masstone
> 052 Perm. Pigments (D) Ultramarine Blue 380
> PB29 No change
> 053 Holbein (D) Manganese Blue W300
> PB33 No change
> 054 Winsor & Newton (D) Manganese Blue 071 SL
> PB33 No change
> 055 Blockx# Manganese Blue 250
> PB33 No change
> 056 Blockx Manganese Blue 250
> PB33 No change
> 057 Sennelier Cerulean Blue 305
> PB35 No change
> 058 Winsor & Newton# Cerulean Blue 137
> PB35 No change
> 059 Winsor & Newton (D) Cerulean Blue 065 SL
> PB35 No change
> 060 Blockx# Cerulean Blue 351
> PB35 No change
> 061 Grumbacher Academy Magnesium Green A133 PB36
> Tiny fade in tint
> 062 Winsor & Newton Cobalt Turquoise 190
> PB36 No change
> 063 Winsor & Newton# Indanthrene Blue 321
> PB60 No change
> 064 Winsor & Newton Indanthrene Blue 321 PB60
> Tiny fade in tint
> 065 Grumbacher Finest Indigo W112
> PB66 No change
> 066 Daler-Rowney Cobalt Blue Deep 116
> PB72 No change
> 067 Winsor & Newton Cobalt Blue Deep 180
> PB73 No change
> 068 Old Holland Cobalt Blue Deep E38 PB74
> Duller in masstone
>
> 069 Winsor & Newton (D) Blue Black 004 SL
> PBk6 No change
> 070 Winsor & Newton (D) Lampblack 028 SL
> PBk6 No change
> 071 Winsor & Newton Indigo 322
> PBk6+PV19+PB15 No change
> 072 Perm. Pigments (D) Lampblack 250
> PBk6 No change
> 073 Sennelier# Payne's Gray 703
> PBk7+PB15+PV19 No change
> 074 Winsor & Newton (D) Charcoal Grey 010 SL
> PBk8 No change
> 075 Winsor & Newton# Ivory Black 331
> PBk9 No change
> 076 Blockx# Payne's Gray 175
> PBk9+PB29+PB15:1 (?) No change
> 077 Perm. Pigments (D) Payne's Gray
> PBk9+PB29 No change
> 078 Blockx# Ivory Black 171 PBk9
> Lighter in tint
> 079 Old Holland Mars Black A370
> PBk11 No change
> 080 Winsor & Newton (D) Davy's Gray 217 SL
> PBk19+PBk7+PW4+PB35 No change
> 081 Winsor & Newton (D) Davy's Gray 019 SL
> PBk19+PBk7+PW4+PB35 (?) No change
> 082 Rowney Artists (D) Davy's Gray 066
> PBk19+PBk11 No change
> 083 Holbein Shadow Green W279
> PBk31 No change
>
> 084 Holbein Van Dyke Brown W339 NBr8
> Faded midtone and tint
> 085 M. Graham (D) Van Dyke Brown 194 PBr6
> Lighter overall
> 086 Daler-Rowney Raw Umber 247
> PBr7 No change
> 087 Holbein Burnt Sienna W134
> PBr7 No change
> 088 Sennelier# Burnt Sienna 211
> PBr7 No change
> 089 Sennelier Raw Umber 205
> PBr7 No change
> 090 Winsor & Newton# Raw Umber 554
> PBr7+PY42 No change
> 091 Yarka# Umber Burnt 403 PBr7
> (?) No change
> 092 Yarka# Umber Raw 401 PBr7
> (?) No change
> 093 Liquitex (D) Sepia Umber 360
> PBr7+PBk9 No change
> 094 Blockx# Sepia 144 PBr7+PBk11
> (?) No change
> 095 Sennelier Transparent Brown 635
> PBr7+PR101+PBk11+PG17 No change
> 096 Winsor & Newton# Burnt Umber 076
> PBr7+PR101+PY42 No change
> 097 Winsor & Newton (D) Raw Umber 554 SL
> PBr7 No change
> 098 Liquitex (D) Burnt Umber 128
> PBr7 No change
> 099 Daniel Smith Monte Amiata Nat. Sienna 056
> PBr7 No change
> 100 Blockx# Burnt Sienna Light 141
> PBr7 No change
> 101 Blockx# Burnt Umber 148
> PBr7 No change
> 102 Blockx# Italian Earth 117
> PBr7 No change
> 103 Perm. Pigments (D) Burnt Siena 127
> PBr7 No change
> 104 Winsor & Newton (D) Burnt Sienna 008 SL
> PBr7 No change
> 105 Schmincke Titanium Gold Ocre 659
> PBr24 No change
> 106 Daniel Smith Permanent Brown 068
> PBr25 No change
> 107 Schmincke Walnut Brown 652
> PBr33 No change
> 108 Schmincke Translucent Brown 648
> PBr41 No change
>
> 109 M. Graham Phthalocyanine Green 150
> PG7 No change
> 110 Pebeo Fragonard (D) Cyanine Green 246
> PG7 No change
> 111 Shiva (Crea. Arts) (D) Phthalo Green 682
> PG7 No change
> 112 Winsor & Newton# Winsor Green (BS) 719
> PG7 No change
> 113 Winsor & Newton Winsor Green (BS) 719
> PG7 No change
> 114 Winsor & Newton (D) Winsor Green 720 SL
> PG7 No change
> 115 Yarka# Emerald Green 301 PG7
> (?) No change
> 116 Winsor & Newton# Winsor Emerald 708 PG7+PW4+PY175
> Faded overall
> 117 Sennelier# Hooker's Green 809
> PG7+PY83 No change
> 118 Perm. Pigments (D) Phthalocyanine Green 317
> PG7 No change
> 119 Blockx# Blockx Green 263
> PG7 No change
> 120 Utrecht Hooker's Green 28163
> PG8 No change
> 121 Yarka# Russian Green 303
> PG8 No change
> 122 Art Spectrum Australian Green Gold W39
> PG10 No change
> 123 Pebeo Fragonard (D) Greengold 237
> PG10 No change
> 124 Winsor & Newton (D) Hooker's Green Light 314** PG12+PY100
> Lighter in tint
> 125 Winsor & Newton Oxide of Chromium 459
> PG17 No change
> 126 Winsor & Newton (D) Oxide of Chromium 072 SL
> PG17 No change
> 127 Winsor & Newton Davy's Gray 217
> PG17+PBk6+PW4+PBk19 No change
> 128 Blockx# Hooker's Green 264 PG17+PY1
> (?) No change
> 129 Blockx# Sap Green 381 PG17+PY40
> (?) Bluer
> 130 M. Graham Viridian 195
> PG18 No change
> 131 Winsor & Newton# Viridian 692
> PG18 No change
> 132 Winsor & Newton Viridian 692
> PG18 No change
> 133 Shiva (Contemp.) (D) Guignet's Green PG18
> (?) No change
> 134 Daniel Smith Moonglow 00057
> PG18+PB29+PR177 Faded a bit
> 135 Sennelier# Viridian 837
> PG18+PG7 No change
> 136 Blockx# Emerald Green 261
> PG18 No change
> 137 Winsor & Newton (D) Cobalt Green 184 SL
> PG19 No change
> 138 Old Holland Cobalt Green Turquoise E266
> PG19 No change
> 139 Sennelier# Terre Verte 213
> PG23 No change
> 140 Shiva (Contemp.) (D) Terra Verte PG23
> (?) No change
> 141 Winsor & Newton (D) Terre Verte 048 SL PG23
> (?) No change
> 142 Old Holland Green Earth A52 PG23
> Yellower and darker
> 143 Blockx# Terre Verte 161
> PG23 No change
> 144 Schmincke Cobalt Green Dark 533
> PG26 No change
> 145 MaimeriBlu Cupric Green Light 322
> PG36 No change
> 146 Winsor & Newton# Winsor Green (YS) 721
> PG36 No change
> 147 Utrecht Cobalt Teal 28166
> PG50 No change
> 148 Winsor & Newton# Cobalt Green 184
> PG50 No change
>
> 149 Shiva (Crea. Arts) (D) Cadmium Orange 670
> PO20 No change
> 150 Sakura Impellist (D) Cadmium Red Pale Hue
> PO36 No change
> 151 Utrecht Perinone Orange 28000
> PO43 No change
> 152 Sennelier# Red Orange 640
> PO43+PY83 No change
> 153 Daniel Smith Quinacridone Burnt Orange 096
> PO48 No change
> 154 Winsor & Newton Quinacridone Gold 547
> PO49 No change
> 155 Old Holland Golden Barok Red C136
> PO65 No change
> 156 Old Holland Coral Orange C145
> PO67 No change
> 157 Old Holland Scheveningen Orange C18 PO69 Tiny
> fade in tint
> 158 Schmincke Translucent Orange 218
> PO71 No change
> 159 Daler-Rowney Warm Orange 633
> PO73 No change
>
> 160 Schmincke# Madder Red Dark 354
> PR-N/A No change
> 161 Winsor & Newton# Permanent Carmine 479
> PR-N/A No change
> 162 Winsor & Newton Permanent Carmine 479
> PR-N/A No change
> 163 Winsor & Newton# Permanent Alizarin Crimson
> PR-N/A+PR206 No change
> 164 Sennelier Carmine Genuine 637 PR-NR4 Very
> faded overall
> 165 Winsor & Newton (D) Carmine 127** PR-NR4
> Extremely faded overall
> 166 Winsor & Newton# Rose Madder Genuine 587 PR-NR9
> Bluer, slight fade overall
> 167 Winsor & Newton Rose Madder Genuine 587 PR-NR9
> Bluer, slight fade overall
> 168 Blockx# Blockx Red 225
> PR3 No change
> 169 Blockx Blockx Red 225
> PR3 No change
> 170 Pebeo Fragonard (D) Permanent Carmine 233
> PR5 No change
> 171 Holbein Crimson Lake 010 PR23 A
> bit cooler, fade in tint
> 172 Schmincke# Brilliant Purple 930 PR81:1
> Duller, darker, redder
> 173 Sennelier# Alizarin Crimson 689 PR83 Very
> slight overall fade
> 174 Sennelier# Alizarin Violet Lake 940 PR83
> Moderate overall fade
> 175 Sennelier# Rose Madder Lake 690
> PR83 No change
> 176 Winsor & Newton Alizarin Crimson 004 PR83
> Slight overall fade
> 177 Blockx Rose Madder 222 PR83 Tiny
> bit faded
> 178 Yarka# Carmine 106 PR83
> (?) No change
> 179 Yarka# Madder Lake 105 PR83 (?) Tiny
> bit faded overall
> 180 Winsor & Newton (D) Indigo 025 SL PR083+PBk6+PB15
> (?) Tint faded only
> 181 Blockx# Carmine Madder 224 PR83 Tiny
> bit faded overall
> 182 Blockx# Rose Madder Deep 223 PR83
> Moderate fade overall
> 183 Perm. Pigments (D) Alizarine Crimson
> PR83 No change
> 184 Winsor & Newton Thioindigo Violet 640
> PR88 No change
> 185 Winsor & Newton# Burnt Sienna 074
> PR101 No change
> 186 Winsor & Newton Indian Red 317
> PR101 No change
> 187 Winsor & Newton (D) Venetian Red 051 SL PR101+PBr7
> (?) No change
> 188 Winsor & Newton (D) Light Red 029 SL PR101+PY43
> (?) No change
> 189 Winsor & Newton# (D) Indian Red 317 SL
> PR102 No change
> 190 Winsor & Newton (D) Indian Red 317 SL
> PR102 No change
> 191 Blockx# Light Red 123 PR102
> (?) No change
> 192 Old Holland Old Holland Light Red A340
> PR102 No change
> 193 Rowney (D) Rowney Vermilion 559 PR106 Very
> slightly duller, darker
> 194 Blockx (D) Vermilion 320 PR106
> Slightly duller, darker
> 195 Holbein Cadmium Red Light W214
> PR108 No change
> 196 Holbein Vermilion W218
> PR108 No change
> 197 Winsor & Newton# Cadmium Red 094
> PR108 No change
> 198 Winsor & Newton (D) Cadmium Scarlet 084 SL
> PR108 No change
> 199 Blockx Cadmium Purple 325
> PR108 No change
> 200 Blockx# Cadmium Red 323
> PR108 No change
> 201 Perm. Pigments (D) Cadmium Red Medium
> PR108:1 No change
> 202 Grumbacher Finest Grumbacher Red 095
> PR112 No change
> 203 Yarka# Scarlet 104 PR112
> (?) No change
> 204 Sennelier Quinacridone Purple 671
> PR122 No change
> 205 Winsor & Newton# Quinacridone Magenta 545
> PR122 No change
> 206 Holbein Opera W213
> PR122+BV10 No change
> 207 Schmincke Dark Red 345 PR170
> Slight fade in tint
> 208 Art Spectrum Permanent Crimson W17
> PR176+PR101 No change
> 209 MaimeriBlu Permanent Red Deep 253
> PR177 No change
> 210 Winsor & Newton Perylene Maroon 507
> PR179 No change
> 211 Winsor & Newton Scarlet Lake 603
> PR188 No change
> 212 Daniel Smith Quinacridone Burnt Scarlet 087
> PR206 No change
> 213 Pebeo Fragonard (D) Pink Madder 235 PR207 A
> bit duller, darker
> 214 M. Graham Quinacridone Red 155 PR209
> Tiny bit duller, darker
> 215 Old Holland Scheveningen Red Deep C24
> PR214 No change
> 216 Holbein Brown Madder W023
> PR216 No change
> 217 Daniel Smith Pinkcolor 081
> PR233 No change
> 218 Sennelier# French Vermilion 675
> PR242 No change
> 219 Sennelier French Vermilion 675
> PR242 No change
> 220 Schmincke# Permanent Red 361
> PR251 No change
> 221 Sennelier# Sennelier Red 636
> PR254 No change
> 222 Sakura Impellist (D) Cadmium Red Hue 119
> PR255 No change
> 223 Old Holland Vermilion Extra 148
> PR260 No change
> 224 Talens Rembrandt Carmine 318 PR264+PV19
> Slight fade in tint
>
> 225 Winsor & Newton (D) Mauve 398**
> BV1+BV10+BV14+PB15 Faded, duller
> 226 Holbein Bright Violet Luminous W175 BV7+BV15
> Very faded, lighter
> 227 Holbein Bright Rose Luminous W170 BV11:1+AB83
> Very faded, warmer
> 228 Sennelier Tyrian Rose 659 PV1
> Faded almost white
> 229 Sennelier Red Violet 905 PV1+PV39
> Very faded, dull
> 230 Schmincke# Brilliant Blue Violet 910 PV3
> Duller, darker
> 231 Winsor & Newton Winsor Violet 728 SL PV5+Acid Blue
> 9 No change
> 232 Daler-Rowney Cobalt Magenta 417
> PV14 Bluer
> 233 Holbein Cobalt Violet Light W110
> PV14 No change
> 234 Shiva (Crea. Arts) (D) Cobalt Violet 686
> PV14 No change
> 235 Winsor & Newton Cobalt Violet 192 SL
> PV14+PB28 No change
> 236 Blockx# Cobalt Violet 331
> PV14 No change
> 237 Blockx Cobalt Violet 331
> PV14 No change
> 238 Daniel Smith Ultramarine Red 107
> PV15 No change
> 239 Winsor & Newton Ultramarine Violet 672
> PV15 No change
> 240 Blockx# Ultramarine Violet 234
> PV15 No change
> 241 Old Holland Ultramarine Violet B199
> PV15 Duller
> 242 MaimeriBlu Mineral Violet 460
> PV16 No change
> 243 Sennelier# Cobalt Violet Light Hue 911
> PV16+PR122+PW6 No change
> 244 M. Graham Quinacridone Rose 156 PV19
> Very slightly darker
> 245 M. Graham Quinacridone Violet 158
> PV19 No change
> 246 Shiva (Crea. Arts) (D) Red Rose Deep (Quin.) 691 PV19
> Very slightly darker
> 247 Winsor & Newton# (D) Permanent Rose 502 SL
> PV19 No change
> 248 Winsor & Newton Permanent Rose 502 PV19
> Very slightly darker
> 249 Winsor & Newton (D) Permanent Magenta 073 SL
> PV19 No change
> 250 Blockx# Rose Madder Pale 221 PV19
> (?) No change
> 251 Blockx Rose Madder Pale 221 PV19
> (?) No change
> 252 Blockx# Magenta 232
> PV19 No change
> 253 Winsor & Newton (D) Rose Doré 089 SL
> PV19+PY3 No change
> 254 Schmincke# Mauve 476 PV23
> Tiny fade in tint
> 255 Yarka# Red Violet 201 PV23 (?)
> Bit duller in tint
> 256 M. Graham Dioxazine Purple 100
> PV37 No change
> 257 Sennelier Blue Violet 903
> PV39 Duller
> 258 Daniel Smith Quinacridone Pink 095
> PV42 No change
> 259 Utrecht Cobalt Violet Light 28177
> PV49 No change
> 260 Old Holland Cobalt Violet Light E31
> PV49 Yellower
>
> 261 Perm. Pigments (D) Zinc White 430 PW4
> Faded to pure white
>
> 262 Winsor & Newton Gamboge Genuine 265
> PY-NY24 Lighter overall
> 263 Winsor & Newton (D) Gamboge 069**
> PY-NY24 Lighter overall
> 264 Blockx Blockx Yellow 212
> PY1 No change
> 265 Winsor & Newton (D) New Gamboge 020 SL
> PY1+PR3 No change
> 266 Blockx# Gamboge 216 PY1+PR3
> (?) No change
> 267 Sennelier Lemon Yellow 501
> PY3 No change
> 268 Winsor & Newton (D) Lemon Yellow 070 SL PY31
> Darker, duller overall
> 269 Blockx# Lemon Yellow 211
> PY31+PY37 No change
> 270 Blockx Lemon Yellow 211
> PY31+PY37 No change
> 271 Sennelier# Cadmium Yellow Light 529
> PY35 No change
> 272 Winsor & Newton Cadmium Lemon 086
> PY35 No change
> 273 Daler-Rowney Cadmium Yellow Deep 613
> PY35+PO20 No change
> 274 Winsor & Newton# Cadmium Yellow 108
> PY35+PO20 No change
> 275 Winsor & Newton Cadmium Orange 089
> PY35+PR108 No change
> 276 Holbein Cadmium Yellow Light W042
> PY37 No change
> 277 Winsor & Newton (D) Cadmium Yellow Deep 086 SL
> PY37+PR108 No change
> 278 Blockx# Cadmium Medium 315
> PY37 No change
> 279 Blockx# Cadmium Pale 311
> PY37 No change
> 280 Blockx# Cadmium Red-Orange 321
> PY37 No change
> 281 Perm. Pigments (D) Cadmium Yellow Deep
> PY37:1 No change
> 282 Winsor & Newton Aureolin 016 PY40
> Duller, darker
> 283 Sennelier# Aureolin 559 PY40
> Duller, darker
> 284 Sennelier# Yellow Ochre 252
> PY43 No change
> 285 Winsor & Newton Yellow Ochre 744
> PY43 No change
> 286 Winsor & Newton (D) Yellow Ochre 059
> PY43 No change
> 287 Yarka# Ochre Yellow 003 PY43
> (?) No change
> 288 Blockx# Yellow Ochre 111
> PY42 No change
> 289 Winsor & Newton# Lemon Yellow (N.T.) 347
> PY53 No change
> 290 Pebeo Fragonard (D) Permanent Dark Yellow 240
> PY65 No change
> 291 Yarka# Golden Ochre 005 PY65
> (?) No change
> 292 Pebeo Fragonard (D) Permanent Light Yellow 239
> PY74LF No change
> 293 Old Holland Scheveningen Yellow Deep D15
> PY83 No change
> 294 Winsor & Newton Transparent Yellow 653
> PY97 No change
> 295 Daniel Smith Indian Yellow
> PY108 No change
> 296 M. Graham (D) Gamboge 105
> PY110 No change
> 297 Holbein Greenish Yellow 046 PY117
> Lighter, cooler
> 298 Holbein Mars Yellow W128
> PY119 No change
> 299 Blockx# Olive Green 265
> PY120+PB15:1+PR83 (?) No change
> 300 Old Holland Old Holland Golden Green C295
> PY129 No change
> 301 Pebeo Fragonard (D) Permanent Lemon Yellow 238
> PY138 No change
> 302 MaimeriBlu Permanent Yellow Deep 114
> PY139 No change
> 303 Daniel Smith Nickel Azo Yellow 061
> PY150 No change
> 304 M. Graham Azo Yellow (Aureolin) 018
> PY151 No change
> 305 Sennelier Indian Yellow 517
> PY153 No change
> 306 Sennelier# Sennelier Yellow Light 578
> PY154 No change
> 307 Winsor & Newton# Winsor Yellow 730
> PY154 No change
> 308 Winsor & Newton Winsor Lemon 722
> PY175 No change
> 309 Winsor & Newton Bismuth Yellow 025
> PY184 No change
>
>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> Comments:
>
> This testing took place over the fall/winter months so I had to allow for
> an extra week of exposure to account for overcast days. Some pigments
> which were seen to change over the summer testing session (e.g. fading in
> some cadmiums) was not seen in this fall/winter testing round.
>
> Blues:
> Copper phthalocyanine blue (PB15.x) is reliable in any brand. Non-metallic
> phthalo blue (PB16) faded in one brand. Prussian blue (PB27) will exhibit
> fluctuating behavior (fade in light, recover in darkness when stored in
> darkness for time equivalent to exposure) across all brands. Some
> varieties of ultramarine blue (PB29) show slight fading.
>
> Blacks:
> All generally reliable.
>
> Browns:
> Van Dyke brown genuine (NR8) and Mars brown (PB6) showed fading.
>
> Greens:
> Both chlorinated (PG7) and brominated (PG36) phthalocyanine green are
> reliable, with PG7 exceptionally so. Nitroso green (PG8) (ASTM III) did
> not show any changes in this round of testing. Terre verte (PG23) shows
> variation only in the Old Holland brand, as it did in the last round of
> testing.
>
> Oranges:
> All oranges were reliable, with the exception of isoindoline orange
> (PO69), which faded a bit.
>
> Reds:
> Carmine genuine (NR4) (ASTM V) faded very rapidly, more quickly in the
> discontinued Winsor & Newton brand than in the Sennelier brand.
> Rose madder genuine (NR9) faded when applied at any strength (1x, 2x, 3x)
> (turned from a warmer to a cooler pink) but retained its brilliant
> pinkness from masstone to tint. I would want to use it in fine artwork
> but only with a caveat to the prospective buyer that it be protected from
> exposure to strong sunlight.
> All brands of alizarin crimson (PR83) exhibited mild to moderate degrees
> of fading.
> Both brands of vermilion genuine (PR106) darkened slightly to moderately.
> Quinacridone reds (PR207, PR209) darkened very slightly.
>
> Violets:
> Basic violet pigments were unreliable. Quinacridone violets (PV19)
> darkened very slightly.
>
>
> -- dkra
>
> --
> dkraatmmiiidotixdotnetcomdotcom
> [Subtract two thousand and (one plus two), plus the "." of course.]