
Reagents & materials
Sodium rhodizonate and dithiooxamide - Reagents & Materials
What you need to perform one test: reagents, kits, consumables, equipment and quality controls, with their official basis. Quantities follow the validated method or the manufacturer's instructions for use (IFU).
Forensic science & legal investigation · General
Sodium rhodizonate and dithiooxamide
Lead and copper residue visualisation
Reagents & stains
| Item | Amount per test | Procure |
|---|---|---|
| Sodium rhodizonatePer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Sodium bitartrate/tartaric-acid bufferPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Hydrochloric-acid reagent. Copper route: dithiooxamidePer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| EthanolPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Ammonium-hydroxide reagentPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Purified water. Keep routes separatePer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
Kits
| Item | Amount per test | Procure |
|---|---|---|
| Optional method-specific lead-residue or copper-residue reagent packPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| No SEM–EDS kit is impliedPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
Consumables & materials
| Item | Amount per test | Procure |
|---|---|---|
| White filter paperPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| SwabsPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Dropper/spray bottlesPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Suitable evidence supportsPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Photographic scalesPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
Equipment
| Item | Amount per test | Procure |
|---|---|---|
| Extracted chemical workstationPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Visible-light examination/cameraPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Appropriate liquid handlingPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Protected reagent storagePer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
Controls & reference materials
| Item | Amount per test | Procure |
|---|---|---|
| Known lead control for rhodizonatePer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Known copper control for DTOPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
| Separate clean-substrate/reagent negativesPer validated method / manufacturer IFU | Per validated method / manufacturer IFU | MerckMerck (Sigma-Aldrich)Recommended · Official manufacturer site |
Official basis (Guidance): NIJ training describes chemical residue tests. ASTM E1588 instead concerns SEM-EDS particle analysis and is not the procedure for these spot tests.
Procurement note: NIJ explicitly lists core chemicals/media. Archived guidance still needs a current casework SOP; ASTME1588 equipment is not the basis for these spot tests.
Sources:G078 US National Institute of JusticeG079 NIST OSAC and ASTM
Procurement links open the manufacturer's or distributor's page in a new tab. STAINIC does not sell these items; always buy products validated for diagnostic use and follow local regulations.
