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Modified Griess test - 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).

Back to Modified Griess test

Forensic science & legal investigation · General

Modified Griess test

Nitrite residue patterns in firearm distance examination

Reagents & stains

ItemProcure
Modified-Griess sulfanilic-acid/alpha-naphthol reagentsPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Acetic-acid solutionPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Specified water/methanol carriersPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Nitrite reference materialPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site

Kits

ItemProcure
Optional qualified prepared nitrite-sensitive test paperPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Matched reagent setPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site

Consumables & materials

ItemProcure
Suitable emulsion-coated paperPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Nitrite-free cheeseclothPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Control swabsPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Nonreactive trayPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Protective backingPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Evidence labelsPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site

Equipment

ItemProcure
Controlled heat-transfer device specified by the methodPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
ExtractionPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
CameraPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Visible examination stationPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site

Controls & reference materials

ItemProcure
Nitrite-positive swab/referencePer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Negative paper/reagent controlPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site
Uncontaminated substrate controlPer validated method / manufacturer IFUMerckRecommended · Official manufacturer site

Official basis (Guidance): NIJ describes nitrite pattern visualisation within a corroborative distance-assessment workflow. Use a current validated casework SOP rather than archived training alone.

Procurement note: This is the modified firearm-residue Griess workflow, not an arbitrary aqueous nitrite assay kit. Full test sequence and evidence handling remain in the controlled SOP.

Sources:G078 US National Institute of Justice

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.

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