The Wiper Silver Wipe Test Counter

Combining new and renewed components, advanced circuitry and sophisticated data reduction, the Wiper Silver Wipe Test Counter provides unmatched performance and value.

The Wipe Library features storage for up to 30 unique wipe tests. Whether wiping outgoing packages, or checking a fume hood, there is room to configure a location to your needs.  Configuration options include setting a location name, count time, background subtract, and trigger level. The Wiper  allows you to choose your own Pass/Fail trigger levels and automatically calculates the MDA (minimal detectable activity.) It  provides superior resolution with 4096 channels to give you accurate, unmistakable isotope ID every time. 

The AutoSpect™ feature of the Wiper Silver Wipe Test Counter provides an accurate method for reporting wipe test results in DPM without the use of expensive isotope standards for multiple energies. Count any gamma emitting isotope and get accurate DPM results automatically. No “fudge” factors or guess work needed.

AutoSpect™ uses known detector efficiency values at various levels across the energy spectrum. These values account for crystal thickness and well geometry among other factors in order to maximize accuracy. Armed with this data, the Wiper™ automatically determines the detector’s efficiency at any point on the energy spectrum. At the same time, it allows the instrument to count and display spectra as they truly should appear, unaffected by lower detector efficiency at higher energy.

SPECIFICATIONS

Detector  NaI(tl) drilled well crystal coupled to a high gain, linearity-selected photomultiplier tube.  Assembly is hermetically sealed in aluminum housing with an internal mu-metal magnetic shield.  Asymmetrical crystal shape provides additional crystal mass below the well for greater efficiency with higher energy isotopes such as F18.
Well Dimension 1.25 inches deep x .669 inches diameter.
Shielding 0.75 inches of virgin lead, extending more than 3.5 inches beyond the bottom of the crystal.
Analyzer High speed 4096 channel analyzer (12 bit) with automatic dead time correction, pole zero correction and baseline restoration.  Integral linearity better than 0.5%.
Output (2)  standard 9 pin RS-232 serial ports, optional UBS cable for computer connection
Printer  Optional printer.
Power External 100-240 VAC (Universal, automatically adjusting power supply), 50-60Hz, less than 30 watt consumption.
Dimensions/Weight  10.5”W x 8.5”D x 4.75:H (base); 6”D x 10”H (detector).  23 lb
Warranty 12 month warranty.

The Wiper Silver Wipe Test Counter Product Brochure