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TI02-36ENG-REV3
Copyright© 2017 by SIRCHIE
All Rights Reserved.
TECHNICAL INFORMATION
Laboratory Type Fuming Cabinet and Heat Chamber
Catalog No. 214CA
INTRODUCTION
The Laboratory Type Fuming Cabinet and Heat Chamber features the
latest in digital temperature control. This device is designed for use in
crime laboratories where large volumes of documentary evidence is to be
processed with iodine fuming or ninhydrin development methods.
The cabinet is constructed of materials that resist corrosion, and once tem-
perature adjustments have been made, there is little need to make changes
in temperature settings.
Prior to First Use:
Upon receipt of the unit, switch both the power and Ninhydrin switches
ON. Allow the unit to reach the full temperature of 175°F. A limited
amount of smoke may be seen in the chamber as protective oils burn off.
This is normal. After at least 15 minutes of operation, switch the unit OFF
100 HUNTER PLACE, YOUNGSVILLE, NC 27596 USA
Ph: (919) 554-2244, (800) 356-7311 • Fax: (919) 554-2266, (800) 899-8181 • Web: www.sirchie.com • Email: sirchieinfo@sirchie.com
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Summary of Contents for SIRCHIE 214CA
- Page 1 This is normal. After at least 15 minutes of operation, switch the unit OFF 100 HUNTER PLACE, YOUNGSVILLE, NC 27596 USA Ph: (919) 554-2244, (800) 356-7311 • Fax: (919) 554-2266, (800) 899-8181 • Web: www.sirchie.com • Email: sirchieinfo@sirchie.com 1 of 12...
- Page 2 Note: Even though the Ninhydrin switch is OFF, the temperature of the heating plate will continue to rise as much as 20°F. CAUTIONS • Consult the appropriate Material Safety Data Sheets (MSDS) found on our website at www.sirchie.com/ support. • Iodine fuming is performed inside the chamber. Ninhydrin preparation must be undertaken outside the chamber.
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Page 3: Oven Controls
TI02-36ENG-REV3 • The 214CA should not be used for Cyanoacrylate (Superglue) fuming. • The use of an approved hood or ductless workstation is recommended. • Always place control prints in the chamber along with any items of evidence. PROCEDURE Oven Controls Oven controls are located on the instrument’s front panel. -
Page 4: Adjusting The Set Point
TI02-36ENG-REV3 oven by telling it what the optimum temperature should be and how much the temperature within the oven should be allowed to drift. The limits of drift are controlled by the temperature HI and LO settings. The temperature controller has a LED temperature display and four switches: (∧), (∨), °F, and raise... - Page 5 TI02-36ENG-REV3 1. Differential Adjustments. How quickly the controller responds to drift in temperature is controlled by the differential adjustments setting. The number entered tells the controller how many degrees the temperature is allowed to drift from the set point before corrective action is taken. The factory setting is 1, i.e.
- Page 6 TI02-36ENG-REV3 through to the point where the blank screen is displayed, the controller will revert to its former settings, ignoring any changes that may have been entered.) Using Iodine Iodine reacts with oils and fatty deposits to produce a temporary yellow-brown reaction product. Iodine is useful on fresh prints on both porous and non-porous non-metallic surfaces.
- Page 7 TI02-36ENG-REV3 c. The center position of the switch is “OFF” and disconnects power to the heater. Press and hold the switch until the temperature reaches approximately 80°F or until vapor can iodine be seen rising from the iodine crystals indicating that the sublimation process has begun. Release the switch.
- Page 8 Ninhydrin Spray or dipped in a Ninhydrin solution. DO NOT spray inside the 214CA chamber. Use care as ink on documents may run or be otherwise affected by the ninhydrin’s solvent. If ink running is a consideration, use No.
- Page 9 NFS200 Ninhydrin Fixative NOTE: Fixative interferes included with your 214CA. Allow the document to air dry. with subsequent Ninhydrin development. Therefore, DO NOT use fixative until you are certain that all prints have been developed and the results have been photographed.
- Page 10 2. Set up the PUM100 according to instructions provided with the unit. Remove both plastic port caps from the rear of the 214CA. 3. Connect the flexible hose to the 214CA as shown in Figure 2 and rotate the Humidifier Control Knob to the HI position. The green ON light will illuminate.
- Page 11 5. When the oven temperature indicates 160°F, turn OFF the PUM100, disconnect the hose from the 214CA, and replace both plastic port caps on the 214CA. 6. Once a temperature of 175°F is reached in the oven, allow heating to continue for 5 minutes, and then...
- Page 12 TI02-36ENG-REV3 100 HUNTER PLACE, YOUNGSVILLE, NC 27596 USA 919-554-2244 • 800-356-7311 www.sirchie.com 12 of 12...
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