Crystal violet

Purpose

Develop latent fingerprint contaminated by grease or on sticky adhesives. Dye the fingerprints developed with superglue.

Specifications

Working principle

Gentian violet is an oil-soluble dye that can adhere to the grease in the fingerprints.

Method

A. Saturate the adhesive surface with the fingerprint with gentian violet solution, or drop the solution onto the adhesive surface with a pipet. After 2 minutes, rinse off the gentian violet solution on the background with water. The gentian violet adheres to the grease in the fingerprints to make the prints dark purple.

B. Use gentian violet solution to saturate the exhibit developed with superglue, or drop the solution onto the exhibit with a pipet. After 2 minutes, rinse off the gentian violet solution on the background with water. The gentian violet penetrates into the superglue e on the fingerprint, and the fingerprint is dyed dark purple.

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.

Langfang Danmei security equipment Co., Ltd.established in 2012, 15 February, with registered capital of 22 million yuan, is located at Langfang City, Hebei Province. The company possesses four buildings, including production workshop, finished product warehouse, material warehouse and scientific research building, total area is 8934 square meters.

The company focus on development and manufacture criminal investigation equipment. We have a research and development team which has a full range of technical talents, including forensic science, machine design, machining, electronic circuit design, optical design, automatic control and chemical analysis.

After years of research and development, we have established a relatively complete criminal investigation equipment product system. The products application area includes fingerprint collection and examination, footprint collection and examination, tool marks collection, trace evidence collection, document examination, cartridge marks collection，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.