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Laboratory Technologies, Inc

Multi-Wiper™ Multi-Well Wipe Test Counter

Multi-Wiper™ Multi-Well Wipe Test Counter

Regular price $23,161.00 USD
Regular price Sale price $23,161.00 USD
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Wipe testing, while necessary for regulatory compliance and safety, is a drain on department productivity.

The Multi-Wiper™ solves this by:

Eliminating wasted technologist time
Creating extra work time to add patient procedures
Minimizing the risk of regulatory fines
Eliminating the need to buy multiple calibration sources

Multi-Wiper Counters are build to order, typical delivery time is 14 days.

Your Time is Valuable, Spend it Wisely

With the Multi-Wiper Wipe Test Counter, the old axiom “Time is Money” has never been truer than in today’s healthcare environment.

Poor efficiency and redundant tasks waste valuable technologist time. Time which could be better spent running procedures which generate income for the department.

A moderate sized Nuclear Medicine department can generate 40 wipe tests per week. Using a single well wipe counter will take the technologist 40+ minutes to count these wipes.

By using a 10 well Multi-Wiper Wipe Test Counter, that time is reduced to just 4 minutes. That means a gain of 36 minutes of extra time per week.

Software – Simplicity, Re-defined

Load your wipe into the well and press the button.  Your wipe is counted and automatically converted to DPM.  If the wipe is above trigger, it is flagged and the contaminating isotope identified – that’s all there is to it.

Increased Department Revenue

With all the extra time gained using the Multi-Wiper™, your department can add more profit-generating procedures.

Using the Multi-Wiper™, an average size department could increase profit by $120,000 in just five years.*

Productivity equals Profitability

* Profit calculated using extra time to perform thyroid uptakes at a cost of $425 per procedure.  More profitable procedures would provide even higher revenue gains.

Automation is the Key

Automation makes a difference.  When a time consuming task can be automated, productivity is enhanced.  The Multi-Wiper™ reduces what was 80 steps by the technologist to a mere 8 steps.

The Multi-Wiper™ automates the manual task of converting CPM to DPM, and eliminates having to write wipe test results by hand.

Better Regulatory Compliance

Regulatory oversight and inspections can be tedious, time consuming-even costly if they result in fines.

By automating, calculating and documenting what were once manual tasks, using a Multi-Wiper™ will cut the amount of time that regulatory personnel spend looking over records, logbooks and processes.

There is no chance of transcription errors, time/date of wipe testing, identification of “hot“ wipes, etc. It’s all there; reports that are clean, concise and ready for inspector scrutiny.

Regulatory compliance has never been so easy, automatic and foolproof.

The Detector

Radiation is emitted 360 degrees, yet some manufacturers don’t seem to understand that. Minimizing crystal mass below the well has a detrimental effect on counting efficiency – especially at higher energies.

The Wiper™ Gold’s crystal design: more crystal mass where it counts – below the sample

We designed it better

By increasing the crystal mass and thickness below the well (up to 400%), the Multi-Wiper Wipe Test Counter captures more counts, making it ideal for 511 PET isotopes.

Our design results in 40% more crystal mass than some other well counters.

With .75 inches of lead shielding (50% more than other wipe counters), lower background readings are achieved without adding external lead.

More shielding + greater crystal mass = Lower MDA’s, 80% Co57 efficiency and better results with isotopes like F18.

The Hardware

One of the keys to making wipe counting fast, easy and accurate is providing useful isotope identification when a “hot” wipe is found.  A low resolution analyzer hampers performance and can result in false readings and mis-identified contaminants.

Wipe counters with 64 or even 256 channels just don’t have the resolution needed for isotope identification. With such low resolution, you may not be able to distinguish Tc99m from Co57.

Other counters use a low resolution analyzer. It’s like taking a picture with a cheap camera .

The Wiper™ Gold provides superior resolution with 4096 channels.  No “ifs” no “buts” – just accurate, unmistakeable isotope ID – every time.  The answer is clear.

With the Mulit-Wiper™ analyzer, results are crystal clear – like a quality high resolution camera.

Say Goodbye to all those Calibration Sources

With AutoSpect,™ you no longer need to purchase expensive isotope standards for multiple energies.

With just a single Cs137 source, Multi-Wiper Wipe Test Counter gives accurate DPM on any isotope you choose*.

Our revolutionary approach allows the user to enter ANY gamma emitting isotope* and calculate real DPM results automatically.

With the Wiper™ Gold there is no need for multiple sources.

* The Multi-Wiper Wipe Test Counter can measure any isotope that has gamma or x-ray emissions up to 1 MEV.

AutoSpect™ Efficiency Correction

Until now, there have been two basic ways to determine DPM for wipe test samples:

1.  Calculate the efficiency of the counter by using a known, calibrated source of the isotope you are looking for (or use a “mock” standard).

2. Enter an efficiency value based on a “best guess”.

While either of these methods will produce results, keeping calibrated sources for every isotope you use in the department is expensive, and checking them regularly is time consuming. The second method of estimating the efficiency is questionable, and not accepted by all regulatory agencies.

Laboratory Technologies, Inc. now offers you a third option; AutoSpect™. Built into every Wiper™, Multi-Wiper™ and Multi-Wiper HE™, AutoSpect™ provides an accurate method for reporting wipe test results in DPM, without needing calibration sources.

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™ and Multi-Wiper™ automatically determine 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.

Cs137 spectrum shown “raw”
Cs137 spectrum shown with AutoSpect™ correction

If you choose to use AutoSpect™, the photon abundance can be entered for each isotope in the library. Each isotope is unique, so it is important to enter the proper number. The instrument comes pre-programmed with abundance factors for the most common nuclear medicine isotopes. You can add or adjust any values you wish.
AutoSpect™ applies the crystal efficiency, determined by your isotope window, as well as the photon abundance. Your Wiper™ or Multi-Wiper™ automatically converts CPM into DPM for all wipe test samples run with an AutoSpect™ enabled isotope.
AutoSpect™ makes for truly simple, accurate and automatic wipe test reports sure to please your regulatory inspector or RSO. Best of all, it is already set up in the system; the user needs to do nothing more than count their wipes.



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.


0.75 inches of virgin lead, extending more than 3.5 inches beyond the bottom of the crystal.

High Voltage:

Precision engineered circuitry with multi-stage gain adjust for ultra-precise software control of calibration.


High speed 4096 channel analyzer (12 bit) with automatic dead time correction, pole zero correction and baseline restoration.  Integral linearity better than 0.5%.  Count rate capability 300,000 CPS.


Optional thermal printer.


100-240 VAC (Universal, automatically adjusting power supply), 50-60Hz, less than 30 watt consumption.


20 inches (51cm) W x 13.5 inches (34cm) D x 10.5 inches (27cm) H.  < 100 lbs (45.5kg), model dependent.

Download the product brochure: ( click on the image below)


LABORATORY TECHNOLOGIES, INC. warrants that all products of its manufacture shall be free from defects in material and workmanship under normal use and service. Any product found to be defective within one year of installation shall be repaired or replaced by the Seller.
 This Limited Warranty to repair applies only to new Products, which after shipment from the factory of the Seller, have not been damaged, altered, changed, repaired or treated in any manner whatsoever by other than the Seller’s authorized representatives, and does not extend to trade accessories, though sold or operated with the Seller’s Prodcts.


Multi-Wiper Models: LTIW1002, LTIW1003, LTIW1004, LTIW1005, LTIW1006, LTIW1008, LTIW1010,  are made to order and usually ship with within 14 days of order.

This product ship by air freight

Shipping dimensions

LTIW100US  40"(102cm) x 24"(61cm) x 24"<61cm) 130-150lbs (59-68Kg)