本产品为一系列8种经过特殊蓝色染料染色的毛织物，提供从极低的光牢度到极高的光牢度范围的蓝色毛料。它们形成了从1到8的序数系列，1代表最低的光牢度至8代表最高的光牢度。
符合标准：JIS L 0841:2004（Test methods for colour fastness to daylight）
"JIS" Blue Scale-Grade 1 Lightfastness Standard. You can cut it in any size accoding to your needs.size 45 x 50cm(1 piece)
“JIS日本标准协会”" 耐光试验蓝羊毛布1级
"JIS" Blue Scale-Grade 2 Lightfastness Standard. You can cut it in any size accoding to your needs.size 45cm x 50cm(1 piece)
“JIS日本标准协会” 耐光试验蓝羊毛布2级
"JIS" Blue Scale-Grade 3 Lightfastness Standard. You can cut it in any size accoding to your needs.size 21.5cm x 25cm(4 pieces)
“JIS日本标准协会” 耐光试验蓝羊毛布3级
"JIS" Blue Scale-Grade 4 Lightfastness Standard. You can cut it in any size accoding to your needs.size 21.5cm x 25cm(4 pieces)
“JIS日本标准协会” 耐光试验蓝羊毛布4级
"JIS" Blue Scale-Grade 5 Lightfastness Standard. You can cut it in any size accoding to your needs.size 45cm x 50cm(1 piece)
“JIS日本标准协会” 耐光试验蓝羊毛布5级
"JIS" Blue Scale-Grade 6 Lightfastness Standard. You can cut it in any size accoding to your needs.size 45cm x 50cm(1 piece)
“JIS日本标准协会” 耐光试验蓝羊毛布6级
"JIS" Blue Scale-Grade 7 Lightfastness Standard. You can cut it in any size accoding to your needs.size 45cm x 50cm(1 piece)
“JIS日本标准协会” 耐光试验蓝羊毛布7级
"JIS" Blue Scale-Grade 8 Lightfastness Standard. You can cut it in any size accoding to your needs.size 45cm x 50cm(1 piece)
“JIS日本标准协会” 耐光试验蓝羊毛布8 级
"JIS" Blue Scale-Grade 3-6 Lightfastness Standard. Includes most frequently used Grade 3 to 6. Each test piece, 1.5cm x 6.5cm, of Grade 3 to 6 are on a sheet. This set consists of ten sheets.
“JIS日本标准协会” 耐光试验蓝羊毛布3-6级套装，包括最常用的3-6级
