C011 Silver nitrate

Silver nitrate

Purpose

Silver nitrate is used to further develop the fingerprints when the development with ninhydrin is unsatisfactory. Usually, development with silver nitrate is the final process when developing fingerprints on light-colored porous surface.

Solution formula

1-3g silver nitrate dissolved in 100ml distilled water.

Specifications

Working principle

Silver nitrate reacts with chloride ions in the fingerprint component to form silver chloride, which is photodecomposed into black elemental silver to develop the fingerprints.

Method

Saturate the exhibit with the silver nitrate solution or apply the solution to the exhibit. Irradiate the exhibit with UV light or sunlight until the dark brown fingerprints occur.

Notes

The fingerprints developed with silver nitrate will disappear gradually over time. So, once the development is complete, a photo should be taken immediately.

Product Application

Application areas for our products include crime scene investigation, fingerprint collection and development, footprint collection and development, tool marks collection, trace evidence collection, documents examination, forensic medical examination, forensic evidence collection, DNA collection, DNA disinfection, criminal photography, criminal investigation light source, narcotic drugs test, poison test, evidence packaging, evidence marking, crime scene plotting, crime scene protection, human body protection on crime scene.

Our Service

We can provide reliable product and service for you.

1. Q: Is it a reliable company?

A: Beijing Bulant Police Equipment Co.,Ltd. is a company specialized in forensic product, such as: crime scene investigation, trace detection, fingerprint development and extraction, footprint extraction, micro-evidence extraction, files & documents inspection, gunshots detection, forensic examine, DNA extraction, criminal photograph, forensic light source, alcohol test, traffic scene investigation, drug & poison examine, evidence packaging, consumables in lab, etc.

2. Q: What about the delivery?

A: We can offer the door to door services by air or by sea just depend on your actual request. Such as DHL, UPS, TNT, FEDEX…

3. Q: What is the package?

A: Aluminum alloy case/carton case/wooden case.

4. Q: Do you have any timely technology supports?

A: We have a professional technology supporting team for your timely services. We prepare the technical documents for you, also you can contact us by telephone, webcam, online chat (google talk, MSN, skype, yahoo).

5. Q: What is the payment method?

A: T/T, WESTERN UNION, MONEY GRAM, ESCROW, PAYPAL

6. Q: Do you take part in the world exhibition every year?

A: Yes, we took part in exhibitions every year since 2008.