The amount of grease or sweat on the
finger and magnetic powder dusting would also
affect the clarity of the latent fingerprint. Too much
or too little oil or grease could produce smudged or
unclear prints, respectively. Moreover, if excess
magnetic powder was used, the fingerprint ridge
would be destroyed while coating glue. Gently
dusting and proper amount of powder were necessary
for producing the high quality of latent fingerprints.
All eight commercial glues were low cost
consumer products (0.13 - 0.54 Baht/ml) available in
Thailand, whereas Tex-Lift (8.33 Baht/ml) must be
imported