Synperonic N alternatives

[Anna S]

Is anyone aware of a supplier of Synperonic N or a workable alternative that has been test for the fingerprint developing solution Physical Developer?

[Diana Tabor]

As far as I know, Synperonic N is no longer manufactured due to environmental reasons. I don't know if anyone has carried out any validation studies on alternatives for Synperonic N, but if you google it, there are alternatives out there. Good luck!

[Anna S]

Thanks Diana! That is what I was afraid of. I've been searching all over. I have found several alternatives on conservation websites, but I am a little hesitant to buy them. Are you using PD? If so, are you buying the pre-made kits?

[Diana Tabor]

Anna, no, we don't use the pre-made kits. Also, we have a supply of Synperonic N that should last us awhile, so we have not invested the time into researching alternatives. I wish you the best, though!

[gerritvolckeryck]

We're using an alternative for Physical Developer : Oil Red O

[David Johnson]

I think that Polysorbate 80 is being used as a substitute. I think that there have been a couple of recent publication in the JFI with regard to physical developer that don't involve Synperonic N.

[Anna S]

Thank you! We've tried out Oil Red, but prefered PD. I will look futher into Polysorbate 80.

[rjk.css]

Synperonic N is available from Crime Scene Supply, Inc. 706-896-9742 FAX 706-896-5986
Stock #3307, $9.95 for 75mL

[David Grady]

Hi,

I received this formula from the Secret Service last year. It works pretty good, though you may have to adjust the amount of detergent if you don't have RO/DI water.

REDOX SOLUTION
30 g frerric nitrate
80 g ferrous ammonium sulfate
20 g citric acid
900 ml RO/DI water (we use twice distilled, filtered and di-ionized water)

DETERGENT SOLUTION
3 g n-dodecylamine acetate
3 ml Tween 20
1 L RO/DI water

SILVER NITRATE SOLUTION
10 g silver nitrate
50 ml RO/DI water

MALIC ACID SOLUTION
50 g malic acid
1 L RO/DI water

PD WORKING SOLUTION
900 ml Redox
40 ml Detergent
50 ml Silver Nitrate

Good luck

[Anna S]

Thanks guys!