本產品為一系列8種經過特殊藍色染料染色的毛織物，提供從極低的光牢度到極高的光牢度范圍的藍色毛料。它們形成了從1到8的序數系列，1代表最低的光牢度至8代表最高的光牢度。
符合標準：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日本標準協會”" 耐光試驗藍羊毛布1級
"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日本標準協會” 耐光試驗藍羊毛布2級
"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日本標準協會” 耐光試驗藍羊毛布3級
"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日本標準協會” 耐光試驗藍羊毛布4級
"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日本標準協會” 耐光試驗藍羊毛布5級
"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日本標準協會” 耐光試驗藍羊毛布6級
"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日本標準協會” 耐光試驗藍羊毛布7級
"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日本標準協會” 耐光試驗藍羊毛布8 級
"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日本標準協會” 耐光試驗藍羊毛布3-6級套裝，包括最常用的3-6級
