Table 2. Results of Latent Lip Prints Developed on White Cotton Fabric
|
REAGENT |
DEVELOPING TIME (days) |
||||||
|
1 |
5 |
10 |
15 |
20 |
30 |
40 |
|
|
Dragon’s
Red |
+++ |
++ |
0 |
|
|
|
|
|
Black
Powder |
+++ |
0 |
|
|
|
|
|
|
Silver
Powder |
+++ |
+++ |
+++ |
++ |
0 |
|
|
|
Ninhydrin |
0 |
|
|
|
|
|
|
|
Sudan
III |
+++ |
+++ |
+++ |
++ |
0 |
|
|
|
Oil
Red O |
+++ |
+++ |
+++ |
+++ |
+++ |
++ |
++ |
|
Sudan
Black |
+++ |
+++ |
+++ |
+++ |
+++ |
++ |
++ |
|
Sudan
III (dis) |
+++ |
+++ |
+++ |
+++ |
+++ |
+ |
+ |
|
Oil
Red O (dis) |
+++ |
+++ |
+++ |
+++ |
+++ |
++ |
++ |
|
Sudan
Black (dis) |
+++ |
+++ |
+++ |
+++ |
+++ |
+++ |
+++ |
Developing quality:
+++high, ++medium, +low, 0
none.