The use of Dust & Dirt Hardener is an efficient method of preparing footprints and tire tracks found in loose or sandy soil.  The 638CA features a quickdrying, clear acrylic formula that adds superior strength to impressions—lessening the chance of detail damage due to the weight of the casting material.  Use it with Plaster-of-Paris, HARDCORE, or Shake-N-Cast™ materials. One 15 oz. (425g) aerosol can is enough to make up to 30 full-size adult shoe impression applications.

Impressions found in snow or ice present unique difficulties for recovery.  Due to the fact that most gypsum-based casting materials generate heat during the curing process, it is necessary to provide an insulating medium. Spray Snow Impression Wax into the impression to prepare the surface for casting. This locks the impression detail to prevent melting when casting medium is applied.  Net Wt. 15 oz. (425g) aerosol can.
Cast made in snow (prepared with No. SP1000).

640C.  Liquid Silicone Casting Kit.  $322.50
This is a complete field kit with all the materials for making accurate reproductions with liquid silicone.  Materials furnished permit casting of tire and footprints in snow, mud and sand, as well as other casting requirements.

640C CONTENTS:
2- 634C Liquid Silicone Rubber, 1 lb. (454g)
1- 636C Silicone Rubber Thinner, 16 oz. (473ml)
2- TM1 Vials of Catalyst
1- SRA10 Aerosol Silicone Rubber Release Agent, 4.5 oz. (133ml)
1- KCP142 Steel Spoon
1- KCP155 Spatula, 7" (17.8cm), Steel Blade
1- 642C Flexible Mixing Bowl, 4.25" (10.8cm)
1- 643C Flexible Mixing Bowl, 4.75" (12.1cm)
1- 644C Flexible Mixing Bowl, 5.25" (13.3cm)
1- SP1000 Snow Impression Wax, Net Wt. 15 oz. (425g)
2- 639C4 Base Builder, 8 oz. vol. (236ml)
1- 638CA Aerosol Dust & Dirt Hardener, Net Wt. 15 oz. (425g)
1- SK900 Tape Measure, English/metric, 100 ft. (30m)
25- 608E01 Evidence Tags w/Ties
1- KCP200 Surface Brush
 

639C.  Tire & Footprint Plaster Casting Kit.  $249.50
This complete outfit is for making exact reproductions of footprints and tire prints in snow, mud, sand and dirt. It is excellent for field investigations. Casting material (calcium sulfate) is finely ground for fastsetting and exact detailed reproduction. Application procedures and instructions are included.

SNC100.  Master Shake-N-Cast™ Impression Kit.  $236.90

SNC100 CONTENTS:
5- SNC42 Shake-N-Cast™ Impression Kits, Net Wt. 42 oz. (1191.7g)
1- FCF100 Adjustable Casting Frame, 7.25" x 12"-18" (18.4cm x 30.5cm-45.7cm)
1- FCF200 Adjustable Casting Frame,
12" x 18"-24" (30.5cm x 45.7cm-61cm)
2- 638CA Aerosol Dust & Dirt Hardener, Net Wt. 15 oz. (425g)
2- SP1000 Snow Impression Wax, Net Wt. 15 oz. (425g)
1- SRA10 Aerosol Silicone Rubber Release Agent, 4.5 oz. (133ml)
1- KCP142 Steel Spoon
1- ESP30W Photo Scales, 10 pk.
1- 608E1 Evidence Tags w/ties, 100 pk.
1- Technical Instructions
1- SNC100CC Heavy Duty, Molded Carrying Case; Dimensions: 17" x 13" x 7.375"
(43.2cm x 33cm x 18.7cm);
Weight: 26.2 lbs. (11.9kg)

BIO-FOAM® Impression System
BIF100.  $4.95 ea
BIF101, $99.95, case of 24
Here’s a quick and easy system of making footwear impressions without damaging or contaminating the footwear. Simply press the footwear onto the surface of the BIO-FOAM®, spray on a thin coating of Aerosol Dust & Dirt Hardener (Cat. No. 638CA), and then mix and pour in Shake-N-Cast™ (No.
SNC42) ready-to-use casting material.  This makes a permanent impression of the footwear. The high density foam provides extremely fine detail and comes packaged in a selfstoring cardboard container.

647C100.  Rubber/Gel Footprint Lifters.   1 Black and 1 White $21.95

Footprint Residue Lifters.  $24.95/12
The sensitive acrylic adhesive of these lifters adheres to the most minute particles. The 6" x 15" (15.2cm x 38.1cm) lifters come with an adhesive protector and transparent plastic backing sheets.

ESP900 Electrostatic Dust Print Lifter.  w/ESP901 Lifting Mats $619.00
One of the most overlooked forms of physical evidence at the crime scene is impression evidence. This is largely due to a lack of specific training in the proper search, collection and preservation of impression evidence, and to the fact that it is often undervalued or simply not understood.  Locating and recovering the obvious kinds of impression evidence—tire tracks and footprints—isn’t the problem. It’s the not so apparent kinds of impressions that are difficult to locate, accidentally damaged or obliterated, and are often missed during the crime scene search. We are talking about dust print impressions. Many indoor crime scenes that you will investigate contain varying amounts of dust on different surfaces.  That’s where the ESP900 becomes most useful.
The ESP900 Electrostatic Dust Print Lifter consists of a high voltage power supply/control unit, a nickel-plated steel ground plane and a metallized lifting medium. Older electrostatic models required the use of two lifting mats—one positively charged and one negatively charged. Our latest electrostatic lifter uses only one metallized plastic sheet and a metal ground plane. As high voltage is applied to the lifting mat, it takes on a negative charge and the ground plane becomes positive. Any dust present under the mat will take on a positive charge and will then be attracted to the negatively charged collection mat. A dust print that is transferred to the lifting mat will appear as a precise mirror image of the original print and lifts made from rough-surfaced floor tile or irregular flooring of any kind are facilitated using this method.