Langfang Danmei security equipment Co., Ltd.
Langfang Danmei security equipment Co., Ltd.
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Tetramethylbenzidine solution
Purpose
Develop blood fingerprints on light-colored surface. Applicable to both porous and non-porous materials.
Specifications
| Color | white to light yellow |
| Package form | paper box |
| Package size | 152x100x25mm |
| Package weight | 105g |
| Packing list | 5mlX4 pcs |
| Specification | 5ml/piece |
Working principle
The heme in the blood causes the hydrogen peroxide to release elemental oxygen, which oxygen oxidizes TMB to produce green-blue color, namely, the color of the developed prints.
Description
The solution is composed of solution A, TMB dissolved in ethanol, and solution B, hydrogen peroxide. Solution A and solution B are sealed in separate ampules, which are placed into one plastic tube to form one set of reagent. This method ensures that the reagent remains effective for several years. If TMB, ethanol and hydrogen peroxide are mixed together, the solution will be ineffective after a few hours.
Method
Crush the ampules with a special pliers or hammer, then the solution flows out to form the working solution in the plastic tube. Cut the top of the plastic tube with scissors, drop the solution on the absorbent cotton, hold the cotton with tweezers and gently rub the blood fingerprint, which will occur quickly with a blue-black color.
Development effect
The TMB development method is currently the most sensitive method for blood fingerprint development. And it’s applicable to both porous and non-porous materials. The TMB sealed with ampules saves the trouble of on-site solution preparation.
Crush the ampules with a special pliers or hammer
Cut the top of the plastic tube with scissors, drop the solution on the absorbent cotton
Hold the cotton with tweezers and gently rub the blood fingerprint, which will occur quickly with a blue-black color
Development effect
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.