BTTS-II Portable 12-waveband light source
Purpose
A. Excite the fluorescence of many kinds of evidence to discover or develop evidence.
B. The background and evidence have different reflectance for different colors. Illuminate the evidence with different colors of the multi-band light sources, different contrast effects will be shown. Record the best contrast effect.
Content
| Name | Quantity | Name | Quantity |
| Light source unit | 1 set | Conversion adapter 62mm-58mm | 1 piece |
| Battery case | 1 piece | Conversion adapter 67mm-62mm | 1 piece |
| Light guide | 1 piece | Conversion adapter 72mm-67mm | 1 piece |
| Light guide support | 1 piece | Conversion adapter 77mm-72mm | 1 piece |
| Yellow barrier filter goggles | 1 pair | Yellow absorption filter | 1 piece |
| Orange barrier filter goggles | 1 pair | Orange absorption filter | 1 piece |
| Red barrier filter goggles | 1 pair | Red absorption filter | 1 piece |
Specifications
A. General parameter
| Item | Parameter | Item | Parameter |
| Light output model | Light guide output | Battery capacity | 118.4V,3AH |
| Bulb power | 120W xenon lamp | Battery life | 100 minutes |
| Lamp life | 2000 hours | Power display | Display remaining battery power |
| White color temperature | 6500K | Light guide length | 1.5 m |
| φ50cm white light intensity | 15600 lux | Light pipe diameter | Φ8mm |
| Power supply | External AC / Built-in battery | Unit size | 455x330x285mm |
| AC power | AC220V,50HZ | Unit weight | 12.4kg |
| Battery-powered | DC118.4V | Packing | Aluminum case |
B. Output band and power
| Output band | Optical power | Output band | Optical power |
| White light | 8.10 W | 490 | 0.58 W |
| CSS | 4.14 W | 510 | 0.40 W |
| 365 | 0.88 W | 530 | 0.53 W |
| 415 | 2.42 W | 555 | 1.28 W |
| 450 | 1.29 W | 580 | 1.01 W |
| 470 | 0.65 W | 610 | 0.39 W |
C. Reference table of output band, barrier filter goggles and absorption filter
| Excitation light | Absorption filter goggles for observation | Absorption filter for photography |
| CSS | Orange barrier filter goggles | Orange absorption filter |
| 415nm | Yellow barrier filter goggles | Yellow absorption filter |
| 450nm | Orange barrier filter goggles | Orange absorption filter |
| 470nm | Orange barrier filter goggles | Orange absorption filter |
| 490nm | Orange barrier filter goggles | Orange absorption filter |
| 510nm | Orange barrier filter goggles | Orange absorption filter |
| 530nm | Red barrier filter goggles | Red absorption filter |
| 555nm | Red barrier filter goggles | Red absorption filter |
Method of use
A. Built-in battery
a. Install the battery case, and wire the battery case to the light source assembly.
b. Connect the inlet of the light guide with the light outlet of the light source.
c. Switch the power option to "battery", then the light source starts to output light.
d. Rotate the knob to select the output wavelength.
e. Hold the light outlet of the light guide to illuminate the evidence, or fix the light outlet on the support and illuminate the evidence.
f. Wear barrier filter goggles that match the output light to observe the fluorescence.
g. Select the absorption filter that matches the output light and install it in front of the lens to photograph the fluorescent image.
B. AC power supply
a. Wire the AC power to the light source assembly.
b. Connect the inlet of the light guide with the light outlet of the light source.
c. Switch the power option to "AC", then the light source starts to output light.
d. Rotate the knob to select the output wavelength.
e. Hold the light outlet of the light guide to illuminate the evidence, or fix the light outlet on the support and illuminate the evidence.
f. Wear barrier filter goggles that match the output light to observe the fluorescence.
g. Select the absorption filter that matches the output light and install it in front of the lens to photograph the fluorescent image.
Application scope
A. Color separation illumination to improve trace contrast
a. Method: the multi-band light source can output different colors of light, including red, orange, yellow, cyan, blue and violet. Illuminate the trace with different colors of light. Since the trace and the background have different absorption rates for monochromatic light, the contrast between the trace and the background will change with the change of light. Choose the best contrast effect for photography.
b. Special band 415nm: The absorption peak of bloodstains is 415nm. Illuminating bloodstains with 415nm light can deepen the bloodstains color, which is quite effective for developing latent bloodstains on the light surface. Method: illuminate the evidence with 415nm light and white light alternately, and observe the nuance between the two.
c. Special band 580nm: The absorption peak of fingerprint developed by ninhydrin is 580nm. Illuminating the fingerprint with 580nm light can deepen the bloodstains color, which is quite effective for developing latent fingerprint on the light surface.
B. Excitation of evidence fluorescence
a. Illuminate the evidence with the excitation light from the multi-band light source. The evidence transfers part of the excitation light it absorbs into light with longer wavelength, which is fluorescence.
b. Choose a suitable absorption filter and view the evidence through the absorption filter. The absorption filter blocks the excitation light but allows the fluorescence to pass through, so the fluorescence of the evidence can be seen.
C. Application scope of excitation of evidence fluorescence
| Excitation light | Type of evidence |
| 365nm | Seminal stain, saliva stain, urine stain, sweat stain, teeth, bones, dandruff, various fibers |
| CSS | Seminal stain, saliva stain, urine stain, sweat stain, teeth, bones, dandruff, fibers, gunshot residues, explosive residues, combustion aids, BBD, Basic yellow, fluorescent powder for fingerprint, greases, inks produce infrared light |
| 415nm | Seminal stain, saliva stain, urine stain, sweat stain, fibers, fluorescent powder for fingerprint |
| 450nm | Seminal stain, saliva stain, urine stain, sweat stain, teeth, bones, dandruff, fibers, gunshot residues, explosive residues, combustion aids, BBD, Basic yellow, fluorescent powder for fingerprint, heat-treated sweat fingerprints |
| 470nm | Seminal stain, saliva stain, urine stain, sweat stain, teeth, bones, dandruff, rhodamine 6G, BBD, gunshot residues, explosive residues, combustion aids, fibers, heat-treated sweat fingerprints |
| 490nm | Seminal stain, saliva stain, urine stain, sweat stain, teeth, bones, dandruff, rhodamine 6G, BBD, ninhydrin-developed fingerprints treated by zinc chloride, combustion aids, heat-treated sweat fingerprints |
| 510nm | Seminal stain, saliva stain, urine stain, sweat stain, teeth, bones, dandruff, rhodamine 6G, BBD, dichlorofluorescein, 1,2-indanedione, basic fuchsin, ninhydrin-developed fingerprints treated by cadmium nitrate, combustion aids |
| 530nm | Seminal stain, saliva stain, urine stain, sweat stain, teeth, bones, dandruff, DFO, rhodamine 6G, 1,2-indanedione |
| 555nm | DFO |
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.
