Polygraph

Computerized Polygraph LX5000-S
LX5000-S
The Computerized Polygraph LX5000-S is the world's most advanced polygraph (lie detector) capable of simultaneously recording changes in several physiological variables while the subject is asked a series of questions pertaining to a specific issue under investigation. The charts generated during the polygraph examination are interpreted by a polygraph examiner.   The LX5000-S comp..
Computerized Polygraph LX4000-S
LX4000-S
The LX4000-S is the best and most popular computerized polygraph (lie detector) in the world capable of simultaneously recording changes in several physiological variables while the subject is asked a series of questions pertaining to a specific issue under investigation. The charts generated during the polygraph examination are interpreted by a polygraph examiner.   The Co..
Photoelectric Plethysmograph for LX5000-SW
76604A-5L
The Photoelectric Plethysmograph (PLE) is a finger sensor used to measure the rapidly occurring relative changes in pulse blood volume. This device utilizes a photosensitive cell to measure light reflected or passed through the tissue segment where the monitor is placed. The light source used produces a light in the infrared range (7000 to 9000 Angstroms). The light in this frequency is scatter..
Photoelectric Plethysmograph for LX4000-SW
76604USA
The Photoelectric Plethysmograph (PLE) is a finger sensor used to measure the rapidly occurring relative changes in pulse blood volume. This device utilizes a photosensitive cell to measure light reflected or passed through the tissue segment where the monitor is placed. The light source used produces a light in the infrared range (7000 to 9000 Angstroms). The light in this frequency is scatter..
Masseter Headphone System
76879HM-A
The Masseter Headphone System (MHS) is designed to detect and record movements in the Masseter muscle of the mandibular region during the recording phase of a polygraph examination, sensing activities of the tongue, clenching of teeth, and other jaw-line actions. The headphones are fitted with highly sensitive transducers that allow for on-screen observation and recording of Masseter muscle act..
Activity Sensor Pad
76879S
Our Activity Sensor Seat Pad, model 76879S, is an accessory to the Lafayette Instrument LX5000 and LX4000 Computerized Polygraph Systems. It is designed to detect minor movements as well as major movements of an examinee during a polygraph examination. By providing a graphic record of movement, the Activity Sensor allows the polygraph examiner to observe the examinee's responses that may not ha..
Activity Sensor Arm Pads
76879A
The Activity Sensor Arm Pads' design and functionality are based on the same concept as the Activity Sensor Pad, model 76879S. The arm pads are utilized with Lafayette Instrument Company’s computerized polygraphs LX4000-SW and LX5000-SW, and are constructed to detect subtle as well as gross movements of shoulders, forearms, and hands of the subject during a polygraph examination. The sensors, i..
Activity Sensor Feet Pads
76879F
The Activity Sensor Feet Pads are utilized with Lafayette Instrument Company's computerized polygraphs LX4000-SW and LX5000-SW and are constructed to detect subtle, as well as gross movements of feet and toes of the subject during a polygraph examination. The sensors are placed on the floor and the examinee's feet set upon them. By providing a graphic record of subject movement, the Activity Se..
Finger Cuff
76535A-5
This lightweight and portable polygraph finger cuff was designed to improve the examinee’s comfort during a polygraph examination by creating less pressure. The cuff can be used as an alternative to the standard arm cuff, such as the Kovacic Arm Cuff, for measuring arterial blood pressure. The finger cuff produces high quality, highly stable tracings.   Unlike the standard arm cuff..
Pump Bulb Assembly
76506A-5
The Pump Bulb Assembly is a high quality sphygmomanometer assembly for LX5000-SW and LX4000-SW computerized polygraphs, which for the purpose of convenient or comfortable measuring integrates into a single mechanism the following components: a pump bulb with bleed valve, plastic locking pinch clip, rubber tubing, and a Leur-lock connector. Pressure range: 0-300 mmHg. ..
Polygraph Exam Soundmasker
AA87169
A quiet environment free of distractions is essential for polygraph testing. According to the American Polygraph Association Standards of Practice “conditions under which polygraph testing occurs are required to be free from distractions that would interfere with the ability of the examinee to appropriately focus during the examination process”.   The Polygraph Exam Soundmasker is ..
Polygraph Exam Portable Eavesdropping Protection Package
AA87170
If you are a polygraph examiner and find yourself administering an examination outside of your office and you wish complete confidentiality, we recommend the Polygraph Exam Portable Eavesdropping Protection Package. The AA87170 is a complete, compact, portable eavesdropping protection system designed for offsite applications. It offers the ability to quickly secure an environment against human ..
Calibrator for Computerized Systems
76740LX
This stand-alone calibrator is a precision instrument designed to test the operating efficiency of all makes and brands of conventional and computerized polygraphs, including LX5000-SW and LX4000-SW computerized polygraphs. This calibrator is capable of checking the pneumo, cardio and EDA/GSR components against factory standards. Lafayette Instrument Company recommends performing functionality ..
Fingerprint/Signature Scanner
LXSIGPRINT
The Fingerprint/Signature Scanner is a high-quality, high-resolution Electronic Signature pad and integrated fingerprint sensor. It will capture and recognize signature and fingerprint imaging. Designed for ergonomic and natural finger and thumb scanning from the front of the touch pad without awkward movement. The Fingerprint/Signature Scanner allows recording fingerprints of both polygraph ex..
USB Webcam with Focus and Microphone
LX-WEBCAM
LX Operating Software allows a polygraph examiner to record (with sound) a polygraph session on a computer screen using an inexpensive digital camera (QuickCam Pro 4000 Logitech). Video recording is synchronized with a polygraph chart and the recording can be played back. The video-recording feature is helpful in polygraph analysis and protects the polygraph examiner from possible false accusat..
Portable Subject's Chair
76877P
This lightweight folding chair with a cushioned seat is especially useful for the examiner whose profession takes him into many unknown field testing situations. The Portable Subject’s Chair design emphasizes comfort and durability. It weighs only 21.5 lb (9.7 kg), has a high weight capacity, folds easily, and will fit in any vehicle for transport. The height and angle of chair arms are easily ..
Adjustable-Arm Subject's Chair (Vinyl)
76870V
The subject's chair is built to orthopedic standards to ensure proper posture and back support. T-frame legs provide maximum stability while adjustable armrests are a one-piece design making this section solid, requiring less hardware. The height of chair arms is easily adjusted depending on the height and size of the examinee. Thanks to the optimal chair design, the arm cuff placed around the ..
Carrying Pouch for LX5000
LX-5000P
This black compact (emblazoned with a logo) “Lafayette Instrument LX5000” carrying pouch with a Velcro flap provides complete protection for the Data Acquisition System, model LX5000. Protects the Data Acquisition System (DAS) from scratches, impact, dust, other particles, etc. ..
Carrying Pouch for LX4000
LX-4000P
This black compact (emblazoned with a logo) “Lafayette Instrument LX4000” carrying pouch with a Velcro flap provides complete protection for the Data Acquisition System, model LX4000A. Protects the Data Acquisition System (DAS) from scratches, impact, dust, other particles, etc. ..
Sensor Storage Pouch
LX-1045
The Sensor Storage Pouch has six pockets with Velcro (fabric hook-and-loop fasteners) latches to keep all of your computerized polygraph accessories protected and organized when you travel. This tri-fold, black pouch can be folded and fits neatly into all of our cases: Large Pelican Case with Wheels, model LX-1065, Small Pelican Case, model LX-1060, Silver Aluminum Carrying Case, model LX-1060S..
Bits Kit for Quick Connect/Disconnect Attachments
76748O
This Bits Kit for Quick Connect/Disconnect Attachments provides 20 spare rubber o-rings for connectors located on the back of the Data Acquisition System Interface. O-rings eliminate air leakage from the computerized polygraph by maintaining a tight connection. When o-rings wear out, they should be replaced using the silver cone-shaped device shown in the photo. Simply place the large end of th..
Beaded Chain Extender for Chest Assemblies
76513BC
The nickel-plated brass Beaded Chain Extender for Chest Assemblies measuring 45" (114.3 cm) in length comes in handy when testing big-size individuals (i.e. obese). This flexible chain is used with all models of pneumatic chest assemblies. Connects to beaded chains on pneumo assemblies thanks to locking links. Supplied with in a small plastic box with one (1) locking link (chain coupling). ..
Portable Thermal Printer
LX-1575C
At barely over 10" (26 cm) long and 1 lb (0.45 kg) in weight, including the battery, the Pentax PocketJet II fits easily into your briefcase, computer bag, or can be quickly mounted in any vehicle or small work area. Using advanced Direct Thermal Printing Technology, the Pentax PocketJet II eliminates the need for messy and expensive ink, toner, or ribbons. The printer uses roll thermal paper, ..
Paper Holder for Pentax Printer
LX-1575PPH
This optional small paper stand is strongly recommended for use with the Pentax PocketJet II, model LX-1575C. It holds both, roll thermal paper, models LX-1575TCP and LX-1575TPL, and the Pentax PocketJet II printer. This paper stand is manufactured by Lafayette Instrument Company. For housing bigger size roll thermal paper we offer the Large Paper Holder for Pentax Printer, model LX-1575LRG. ..
EDA Assembly
76640A-5L
The EDA Assembly for LX5000-SW and LX4000-SW computerized polygraphs has been designed for maximum efficiency and serviceability. It consists of the following components: EDA cable (model 76643A-5L), EDA snap-on finger plates (model 76642SP), and disposable EDA sensors/electrodes (model 76642D). ..
EDA Cable
76643A-5L
Generally, the EDA Cable is supplied with the EDA Assembly, model 76640A-5L, along with EDA snap-on finger plates (model 76642SP), and disposable EDA sensors/electrodes (model 76642D). It can be purchased separately as well. ..
Disposable EDA Electrodes
76640SO
This kit for measuring skin conductance includes a package of 100 Ag/AgCl EDA (Electrodermal Activity) disposable snap electrodes/sensors (model 76642D) and an electrode cable (model 76643SO), one end of which bifurcates into two cables each ending with snap connectors. The other end of the cable connects to the DAS Interface through a 1/4" plug.   The electrodes are pre-gelled, hy..
Disposable EDA Electrodes
76642D
The 76642D consists of a package of 100 Ag/AgCl EDA (Electrodermal Activity) disposable snap electrodes (sensors) for measuring skin conductance of subjects undergoing polygraph examination. The electrodes are pre-gelled, hypoallergenic, and latex free. They are easy to use - simply peel off strip and place on fingers. These disposable electrodes are less susceptible to movement artifacts and l..
EDA Cable with Snap Reusable Electrodes
76640SP
The Lafayette EDA Cable with Snap Reusable Electrodes has been designed for maximum efficiency and serviceability. On one end the 0.635 cm plug connects the model 76640SP to the Data Acquisition System (DAS) Interface. The opposite end of the cable (model 76643SO) is bifurcated into two cable branches both ending with a snap connector.   The two snap connectors snap to the two fing..
EDA Snap Finger Electrodes
76642SP
The EDA Snap Finger Electrodes (set of two) have been designed for maximum efficiency and serviceability. The 76642SP set consists of two stainless steel finger plates fitted with Velcro tape. The two finger plates are placed on the subject's index and ring fingers of the right hand during a polygraph examination. No other company in the world manufactures stainless steel electrodes with snaps...
EDA Finger Electrode Set
76640DP
The Lafayette Finger Electrode Set has been designed for maximum efficiency and serviceability. On one end the 0.25" (0.635 cm) plug connects the EDA Finger Electrode Set to the Data Acquisition System (DAS) Interface. The opposite end of the cable is bifurcated into two cable branches both ending with a simple pin jack. The two pin jacks connect to the two finger plates, which are then placed ..
EDA Electrode Cable
76643SO
Generally, the EDA Electrode Cable, model 76643SO, is supplied with the Lafayette EDA Cable with Snap Reusable Electrodes, model 76640SP, and the Disposable EDA Electrodes, model 76640SO. It can be purchased separately as well. On one end the 1/4" plug of the model 76643SO connects to the Data Acquisition System (DAS) Interface. The opposite end of the cable is bifurcated into two cable branche..
Electrode Gel
76246
This is multi-purpose Ag/AgCl electrode conductivity gel. It is highly conductive, chloride free and hypoallergenic. Its non-thinning formula will not irritate and will resist breakdown from body heat and salts in perspiration and will remain moist, thick and uniformly conductive throughout the most prolonged polygraph examination. This gel reduces the electrode-impedance and optimizes the cont..
Standard Kovacic Arm Cuff
76530A-5
Lafayette Instrument Company patented standard blood pressure Kovacic-style cuff for LX5000-SW and LX4000-SW computerized polygraphs eliminates problems associated with a loosely wrapped cuff and ensures that the cuff does not shift away from the brachial artery during application. In addition, the center of the bladder is clearly marked on the inner and outer surface of the cuff for correct ap..
Pneumo Chest Assembly (Titanium)
76513A-T
Only the finest quality materials are used for this Pneumo, which is 0.75" (1.9 cm) in diameter, 13" (33 cm) extended and 8" (20 cm) relaxed. There is a 46" (116.8 cm) beaded chain and 7' (213.4 cm) of rubber tubing. A 45" (114.3 cm) Pneumo Beaded Chain Extender, model 76513BC, may also be purchased. Used with LX5000-SW and LX4000-SW computerized polygraphs. ..
Pneumo Chest Assembly (Blue)
76513A-B
Only the finest quality materials are used for this Pneumo, which is 0.75" (1.9 cm) in diameter, 13" (33 cm) extended and 8" (20 cm) relaxed. There is a 46" (116.8 cm) beaded chain and 7' (213.4 cm) of rubber tubing. A 45" (114.3 cm) Pneumo Beaded Chain Extender, model 76513BC, may also be purchased. Used with LX5000-SW and LX4000-SW computerized polygraphs. ..
Vital Parts Kit
76713A-5
This Vital Parts Kit for LX5000-SW and LX4000-SW computerized polygraphs is for polygraph examiners using the Electrodermal Activity (EDA) Disposable Finger Electrode Set, model 76642D, and the EDA Snap Finger Electrodes, model 76642SP. ..
LX Computerized Polygraph Software
LXSOFTWARE
Windows-based since 1994, the LX Computerized Polygraph Software offeres unparalleled ease of use and proven reliability, and is Windows 7 and Windows Vista compatible. LXSoftware comes with the Polyscore and Objective Scoring System (OSS-2 and OSS-3) scoring algorithms. The world's leading polygraph experts agree that LXSoftware is the most advanced and sophisticated software on the global pol..
Polyscore Polygraph Software
POLYSCORE
The latest version of Polyscore is now Windows-based for ease of use. It allows polygraph examiners the ability to view and print stacked charts. Another feature that examiners will find valuable is the on-screen color-coded bar graph display. This feature makes it very easy to graphically display reaction strengths, allowing for easy public/novice interpretation. Additionally, by upgrading to ..
Identifi Polygraph Software
LXIDENTIFI
Computerized polygraph analysis software, Identifi, is now available for the first time to Lafayette users. It scores charts utilizing a three-position or seven-position scale. An examiner may choose to analyze relevant questions against weaker adjacent or preceding comparison questions. This algorithm will score many different examination types, including screening tests such as pre-employment..
ASIT Computer Scoring Software
LXASIT
Lafayette Instrument Company has worked with the Academy for Scientific Investigative Training (ASIT), directed by Nathan Gordon, to tightly integrate the ASIT computerized scoring algorithm with the LXSoftware. Using the LXSoftware, sensor line length and magnitude measurements can be easily made using the LXSoftware's chart review calipers. These measurements are transmitted automatically and..
QuESt Polygraph Software
LXQUEST
Quantitative Evaluation System (QuESt) allows the examiner to analyze charts without the computer making an interpretation of truth or deception. QuESt graphically displays relative reaction strengths with color-coded bar graph or hodograph. It will analyze any question format, and offers selectable analysis times. Individual standardized charts may be viewed in a variety of time continuums, al..
Objective Scoring System (OSS-3)
OSS-3
OSS-3 is a manual numerical scoring method developed for evidentiary applications. It allows virtually perfect agreement among multiple scorers and it is possible to estimate accuracy from these scores. While the OSS-3 uses far fewer criteria for evaluating data than other systems, it requires scrupulous attention to the scoring protocol to deliver these advantages over traditional 7-position s..
Portable Carrying Case
LX-1050
The Deluxe 17" Leather Notebook Case brings together the most popular features of our original Leather Notebook Case and a more spacious design able to accommodate larger screen notebooks. The removable mesh accessory pouch and divided, expandable file section provide added functionality and storage space while the nyflex-lined computer compartment protects your investment. The workstation incl..
Carrying Case with Wheels
LX-1055
The new Targus XL Rolling Notebook Case combines the features of the XL Notebook Case with rolling capabilities for travel ease. With its 36" (91.4 cm) telescoping handle, "in-line skate" wheels, air cushion protection system and ample storage space, this rolling notebook case is the easiest way to transport all of your mobile computing essentials. The removable accessory pouches allow for maxi..
Small Pelican Case
LX-1060
The Small Pelican Case is the ultimate way to store, protect, and transport valuable items and equipment. This hard case is virtually unbreakable, airtight, waterproof, and totally guaranteed. The 0.25-inch (0.635 cm) o-ring seal includes a pressure release valve for adjusting atmospheric pressure change. The case includes the padded divider set to protect your computerized polygraph system. Th..
Large Pelican Case with Wheels
LX-1065
The Large Pelican Case with Wheels is a standard rolling transport case for computerized polygraph systems. This watertight, crushproof, and dust proof case, complete with front handle and convenient extension handle, is the perfect rolling travel companion. An added value to this case is the effortless release latch for the extension handle. Furthermore, the padlock protectors provide added st..