SIRCHIE PVS200EG Manual

100 HUNTER PLACE, YOUNGSVILLE, NC 27596 USA
Ph: [phone], [phone] • Fax: [phone] • Web: www.sirchie.com • Email: [email protected]
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Copyright© 2016 by SIRCHIE
All Rights Reserved.
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TECHNICAL INFORMATION
All-Purpose Evidence Recovery Kit
Catalog No. PVS200
INTRODUCTION
The PVS200 Kit opens a whole new realm of possibilities for the crime scene evidence technician. Using
liquid silicone materials is not new to the CSI—what’s new is the delivery method.
Silicone materials used in evidence collection consist of a base material and a catalyst (hardener). The
PVS200 eliminates the guesswork in achieving the correct
mixture ratio. Simply load the gun and pull the trigger. Mixing
is done automatically in a unique mixing nozzle. The PVS200
extruder gun uses equal amounts of base material and catalyst
(polyvinyl siloxane). Pulling the trigger forces both substances
into the mixing nozzle and out the end of the spreader tip.
This incredible formula is the perfect method for lifting pow-
dered latent prints from textured, irregular or curved surfaces.
PVS200 contains 3 formula cartridges: brown, white and trans-
parent. The transparent formula enables direct viewing of the

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print. In many instances, transparent
print lifts may be placed directly onto
a atbed scanner and scanned into a
computer. Opaque formulas (brown and
white) produce a reversed image (see
examples shown to the right).
CAUTION
• Before using this kit, consult the ap-
propriate Material Safety Data Sheets
(MSDS) found on our website at
www.sirchie.com/support.
PROCEDURE
Loading The Extruder
1. Release the cartridge latch.
2. Insert the piston driver into the gun and hold up the release.
3. Pull the top latch back to the raised position.
4. Insert the cartridge into the latch assembly.
5. Push the top latch down to lock cartridge in place.
6. Push the piston driver forward to engage the cartridge.
7. Remove the cartridge end-cap and set it aside.
8. Pull the trigger to ensure ow.
Tool mark left behind
in wood is cast using
the brown compound
of PVS200.
Powder developed la-
tent print is lifted from
quarter with intricate
detail shown below.
Resultant lift below us-
ing transparent com-
pound, shows excellent
ridge detail not appar-
ent on textured surface
above.
SETTING TIMES (minutes:seconds)
TEMP. °C/°FWORKING SETUP
-30/-22 48:00 96:00
-20/-4 24:00 48:00
-10/14 12:00 24:00
0/32 6:00 12:00
10/50 3:00 6:00
20/68 1:30 3:00
30/86 0:45 1:30
40/104 0:23 0:45

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9. Ax mixing nozzle.
10. Twist clockwise to lock.
11. Place the tip close to the surface where the
impression is to be made and begin pulling
the trigger until the silicone mixture begins
to ow. Continue applying the silicone until
the area to be lifted is fully covered. Allow
4-6 minutes for material to harden (resultant
lift shown below).
CLEAN UP
No clean up is required after using the ex-
truder gun. Simply remove the used nozzle
and dispose of it. Replace the end-cap onto the cartridge, pull the piston driver all the way out of the
cartridge, remove the cartridge and piston driver and return them to the kit. No wasted material and no
mess to clean up.

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Special Notes:
TRANSPARENT POLYVINYL SILOXANE (PVS200T) is primarily used to lift latent prints developed with powders. It is especially useful on
textured or rough surfaces. By using a transparent mixture, the lifted print is seen right side up when looking through the mate-
rial and it does not need to be reversed photographically. When applying transparent compound to a surface make a single
smooth pass. Do not go back and forth to make the cast thicker as this will entrap air bubbles.
WHITE or BROWN POLYVINYL SILOXANE is mostly used for recovery of tool marks, bite marks, etc. The brown offers better photo-
graphic contrast and is the medium of choice when recovering tool mark impressions.
White Compound (PVS200W) is useful for recovering fingerprint impressions in soft materials such as putty or paint that dried after
impressions were made. After lifting the impression, apply fingerprint ink to the cast and roll the print on paper.
Brown Compound (PVS200B) is an ideal medium for casting the inside of the barrels of firearms, especially if the weapon is inca-
pable of being fired. To prepare the cast, plug one end of the barrel with a removable medium such as cotton. Fill the barrel
from the opposite end with casting compound and allow 15-20 minutes curing time. Use a cleaning rod to push the cast back
out of the barrel. Push against the cotton plug. The cast will exhibit the same markings as any bullets that have been fired
through the barrel.
Note: When recovering impressions from tool marks or gun barrels, you may use the nozzles not equipped with spreader tips to
allow a more concentrated flow into the impression.
APPLICATOR STICKS (PVS200AS) supplied with the No. PVS200 Kit are used to apply pressure to a cast immediately after the mate-
rial is placed on the surface, ensuring that the material flows into the impressions to be recovered. The spatula will stick to the
curing material. This will provide you with a handle to assist in cast removal. The spatula is easily removed from the cast after
curing is complete.
PVS200 CONTENTS:
1- PVS200EG Extruder Gun
12- PVS200N Nozzles with spreader tips
12- PVS200NT Nozzles w/out spreader tips
1- PVS200W White Dual Cartridge, 75ml
1- PVS200B Brown Dual Cartridge, 75ml
1- PVS200T Transparent Dual Cartridge, 75ml
10- PVS200AS Applicator Sticks
1- Molded Plastic Carrying Case w/pre-cut insert
CAT. NO. REPLACEMENT SUPPLIES
PVS200W White Dual Cartridge, 75ml
PVS200B Brown Dual Cartridge, 75ml
PVS200T Transparent Dual Cartridge, 75ml
PVS200NT Nozzles with Spreader Tips, 12 ea.
PVS200N Nozzles w/out Spreader Tips, 12 ea.