Compact single-detector wipe-test counter built for the small or satellite hot lab. AutoSpect™ with Spectrum Compensation delivers accurate DPM on any gamma-emitting isotope up to 1 MeV from a single Cs-137, Na-22, or Co-57 calibration. Thirty programmable wipe locations, sixteen customizable tests, and the only true 4096-channel multi-channel analyzer (MCA) built into a wipe-test counter — the headline feature that puts the Wiper Gold in a category by itself.
Not every nuclear medicine department needs a 10-well Multi-Wiper. Satellite imaging centers, single-cyclotron radiopharmacies, smaller research labs, and veterinary hospitals all need a real wipe-test counter — just one with one well, a small footprint, and a price point that fits a single-instrument budget. The Wiper Gold is that counter. Same Genesys-platform NaI(Tl) detector design, same AutoSpect™ isotope DPM, same regulatory-grade record keeping — sized down to a 22-pound bench-top.
10.5" × 12" × 10" footprint. 22 pounds. Fits on a satellite-lab bench, a research desk, or wherever you have outlet space. Despite the size, full 4096-channel MCA, real Spectrum Compensation, 1-MeV energy range, 0.75″ equivalent radiation shielding, and a mu-metal light shield around the PMT — not a stripped-down handheld.
AutoSpect corrects for crystal efficiency variation across the energy range; Spectrum Compensation goes one step further by adjusting for each isotope’s gamma abundance. The result: accurate DPM on any isotope, from a single calibration source. No expensive isotope-specific standards.
30+ programmable wipe locations. 16 customizable tests. Iterative counting with decay-curve analysis (set the sequence, walk away). Forward and reverse decay correction. Sample volume correction. The Wiper Gold has the workflow features of a counter twice its size.
Every report your Wiper Gold prints — wipe tests, calibration summaries, AutoSpect™ spectra, decay calculations, daily QC — captured directly to a properly named PDF, filed into a searchable archive, and optionally printed to any networked office printer or exported as CSV to your LIS/LIMS. The dot-matrix data path, replaced by software.
The Wiper Gold ships in two well configurations — same chassis, same firmware, same MCA. Click a card to see which samples each well is sized for.
Standard well — 0.67″ (17 mm) bore × 1″¼ (32 mm) deep. Sized for routine wipe vials, scintillation vials, and standard 13 mm and 16 mm RIA / culture tubes. The right pick for hot-lab wipe testing and small-format samples — the configuration most Wiper Gold customers spec.
LSV well — deeper, wider chamber. Sized for 15 mL and 50 mL centrifuge vials, larger reagent and storage vials, bulk-volume rinse samples, and large source standards. Same chassis, same firmware, same MCA — the chamber is the only thing that changes. See Inside the Box for the full comparison.
Every feature on the Wiper Gold exists because a customer told us they needed it — and most of them tell you something about the people who designed it.
Every printed report — wipe tests, calibration summaries, AutoSpect™ spectra, decay calculations, daily QC — captured to a properly named PDF, filed into a searchable archive, and optionally printed to any networked office printer or exported as CSV to your LIS/LIMS. Connects through a single USB-to-Serial cable on the Wiper Gold’s printer port; the instrument itself sees no change. Replaces the dot-matrix data path with software that runs on the lab’s existing PC. Backwards-compatible with every Wiper Gold ever shipped. See the sell sheet and user manual.
Same Genesys-platform detector design as the Multi-Wiper and Genii. By increasing crystal mass and thickness below the well by up to 400%, the Wiper Gold captures more counts — especially good at 511 keV (PET F-18) and other high-energy isotopes that thinner-crystal counters miss. 40% more crystal mass than typical single-well wipe counters.
Two-stage compensation. AutoSpect corrects for crystal efficiency variation across the energy range so the displayed spectrum is genuinely accurate. Spectrum Compensation then adjusts for the gamma abundance of each isotope. Result: real DPM on any gamma-emitting isotope up to 1 MeV, from a single calibration source — no expensive per-isotope standards.
This is the feature that puts the Wiper Gold in its own category. No other wipe-test or well counter on the market ships with a true MCA built in. 4096 channels across 0–1000 keV gives 0.25 keV/channel resolution. Full Pulse Height Analysis: zoom, Region of Interest (ROI) with edge dragging, peak ID across the stored isotope library, FWHM calculation, marker positioning, baseline subtract, automatic dead-time correction. The kind of analysis tools that used to require a dedicated lab MCA costing thousands of dollars more — sitting on the same bench as your wipe counter, in the same instrument.
Define your survey route once across up to 30 distinct wipe locations (benches, sinks, doors, sealed sources, shipping packages, etc.) with per-location isotope and trigger settings. Define up to 16 test types — CPM, DPM, dose-calibrator-style nCi/µCi/mCi/Bq, custom triggers, custom count times — and store them. The technologist runs a survey by selecting a stored test, not by re-entering parameters.
Built-in decay engine that works in both directions across a window of roughly ±70 years from the measurement date. Counting a run of short-lived isotope samples? Reverse decay corrects every tube as if it were counted at the same instant (T=0). Need to know when a Co-57 source you have today will be at a specific activity level? Enter the target activity and the Wiper Gold returns the date and time. Forward, reverse, or solve-for-target — all from one tool. Volume input optional, gives concentration calculations alongside activity.
Up to 100 iterations on the same sample at user-defined intervals. The Wiper Gold runs the sequence unattended and logs each result. The data series isn’t just workflow convenience — it’s a measurement. The sequence of counts describes the sample’s decay curve, and the apparent half-life from that curve verifies radionuclidic identity and purity — the textbook USP ⟨821⟩ / European Pharmacopoeia / EANM QC method for confirming that cyclotron-produced F-18 (or any target isotope) isn’t contaminated with longer-lived impurities. Competing specialty gamma spectrometers market this as their headline feature; on the Wiper Gold it’s a standard workflow. Also covers Cs-137 source-check QC, statistical Chi-Square verification, long-count low-activity wipes, and end-of-day surveys.
Sample efficiency depends on isotope energy, geometry, and how the sample sits in the tube. The Wiper Gold lets you build a volume-correction curve from 5 to 8 dilution points per isotope per tube type. Once stored, the system normalizes counting results across volumes automatically — compare a 200 µL wipe rinse to a 1 mL rinse to a 3 mL standard without doing the geometry math by hand.
Pick the calibration source that fits your radioactive material license. The Wiper Gold uses high-resolution DAC-controlled gain to bring the system into spec. Automatic high-voltage gain adjustment — no screwdriver, no service call.
Under 30 watts on universal 100–240 VAC. Backlit LCD display. Configurable serial port for PC connection; optional USB connection cable. Pairs with an optional full-page serial printer for inspector-ready records, or with LTI Capture™ for digital records straight to PDF and CSV — no paper, no transcription, fully searchable archive.
All specifications below apply to the Wiper Gold. Configuration-specific data may vary; contact us for the exact figures for your intended setup.
| Detector | |
|---|---|
| Type | Well-type NaI(Tl) crystal coupled to high-gain PMT |
| Crystal design | Up to 400% more mass below the well; ~40% more total mass than typical wipe counters |
| Well liner | Removable plastic liner prevents detector contamination |
| Shielding | |
| Radiation shielding | 0.75″ equivalent — radiation attenuation |
| PMT light shield | Mu-metal sleeve around the photomultiplier tube — light-tight assembly that also eliminates gain drift from external magnetic fields (Earth’s field, nearby motors, transformers, fluorescent ballasts) |
| Energy & Count Rate | |
| Energy range | Up to 1 MeV (gamma + X-ray) |
| Count rate capability | Over 300,000 CPS |
| MCA | 4096-channel, automatic dead-time correction |
| Software & Workflow | |
| Calibration sources | Cs-137, Na-22, or Co-57 (automatic HV gain adjustment) |
| AutoSpect™ | Crystal efficiency compensation across energy range |
| Spectrum Compensation | Per-isotope gamma-abundance adjustment for accurate DPM |
| Wipe locations | 30 programmable |
| Customizable tests | 16, with stored parameters per test (isotope, count time, iterations, background, decay correction, volume correction) |
| Decay calculator | Forward and reverse, ± ~70 years; solves for date or for target activity; optional volume input gives concentration |
| Iterative counting | Up to 100 iterations per test, unattended; data series supports decay-curve analysis for radionuclidic identity / purity verification (cyclotron QC workflow) |
| Sample volume correction | 5–8 dilution points per isotope per vial type |
| Result units | CPM, DPM, nCi, µCi, mCi, Bq, KBq, MBq |
| MCA Features (only wipe-test counter on the market with a true MCA built in) | |
| Channels | 4096 across 0–1000 keV (0.25 keV / channel resolution) |
| Tools | Zoom, Region of Interest (ROI), Pulse Height Analysis (PHA), peak ID across stored isotopes, FWHM, marker positioning, baseline subtract, automatic dead-time correction |
| Display & I/O | |
| Display | Backlit LCD, 4.5″ (11.25 cm) |
| Keypad | Alphanumeric |
| Serial port | Configurable, for PC / LIS connection |
| USB | Optional USB connection cable |
| Printer | Optional full-page serial printer |
| Power | |
| Voltage | 110–240 VAC |
| Frequency | 50 / 60 Hz |
| Consumption | 30 W |
| Physical | |
| Dimensions | 10.5″ L × 12″ W × 10″ H (27 × 30 × 26 cm) |
| Weight | 22 lb (10 kg) |
| Manufacturing | |
| Engineered & built in | Elburn, Illinois, USA |
| Service model | Field-replaceable parts shipped to your biomed, or send-in repair to LTI Elburn |
Click any pill, swipe, or use the arrows. Long-form article →
4096 channels vs. the competitive deck
A multi-channel analyzer (MCA) divides the 0–1 MeV energy range into individual “channels.” More channels = finer resolution = sharper peaks, cleaner identifications, more reliable analysis. The Wiper Gold has 4096 channels. Most competitors at this price point have 256 or 64. Here’s the difference, applied to a thing your eyes already know how to evaluate.
Click the buttons above to see what 256 and 64 channels do to the same image. The detail you lose isn’t cosmetic — in a real spectrum it’s the difference between resolving Tc-99m (140 keV) cleanly from a Mo-99 breakthrough sitting next to it, or seeing them as one indistinct hump. It’s the difference between identifying an unknown contamination from its photopeak signature, or shrugging.
1″¼ deep well in a 2″⅛ long crystal vs. 1.5″ deep well in a 1.75″ long crystal — and why F-18 cares
Gamma rays don’t deposit their energy in a crystal by magic. They have to travel through enough crystal mass to interact — the higher the energy, the more crystal it takes. Stopping power is everything at high energies. The Wiper Gold uses a 1″⅛ × 2″⅛ NaI(Tl) crystal with a 0.67″ wide × 1″¼-deep well, leaving ⅞ of an inch of crystal directly below the sample. The Capintec Caprac uses a 1.5″×1.75″ detector with a 0.67″×1.5″ well — the well runs nearly the full length of the crystal, leaving only 0.25″ of crystal below the sample. 3.5× more stopping mass where it matters most.
The asymmetric design is deliberate. The Wiper Gold detector is longer than it is wide — while Capintec’s is wider than it is long. Capintec’s extra side-of-well crystal might sound like an advantage, but side mass stops contributing usefully above I-125 (35 keV). At clinical-isotope energies — Tc-99m (140 keV), F-18 (511 keV), Cs-137 (662 keV), Co-57 (122 keV) — gammas going out the side interact even in a thin crystal. So Capintec’s extra side mass is wasted at every energy you actually count. What matters at high energies is the crystal mass below the sample, where gammas heading downward have to travel through enough material to be stopped. LTI puts the crystal where it does the most work.
~8% stopped — 1 of 12
0.25 in.
of crystal below the sample
The well runs nearly the full length of the detector. Almost no crystal mass below the sample to stop high-energy gammas. F-18, Cs-137, and Co-57 photons pass straight through the thin crystal floor without interacting. Lost counts. Lower DPM accuracy. Underreported activity at the energies that matter for PET work.
~25% stopped — 3 of 12
⅞ in.
of crystal below the sample
3.5× the stopping mass below the well. High-energy gammas have meaningfully more material to interact with on their way through. The result: > 80 % efficiency on Co-57 and meaningfully better F-18 / 511 keV performance than the wider-but-shorter Capintec design.
This isn’t marketing. It’s the geometry of how a NaI(Tl) crystal actually works. Look at the crystal-mass numbers on any single-well counter spec sheet — the ones that publish them. Then look at the published efficiency curves at 511 keV. The math always lines up. We’re just one of the few willing to put both numbers on the page.
AutoSpect™ Spectrum Compensation vs. flat-percentage approximations
Most counters report DPM by applying a single flat percentage efficiency per isotope — a fudge factor the manufacturer pre-calculated for the isotopes shipped in the library. Want to count an isotope not in the library? You can manually enter your own fudge factor — and live with whatever accuracy that produces. The Wiper Gold doesn’t work that way.
Most counters at this price point
Result: approximate DPM. Often good enough for Pass/Fail at trigger. Not good enough for inspector-grade reporting on isotopes the manufacturer didn’t pre-calibrate.
Wiper Gold
Result: real DPM on any isotope you put in. Inspector-grade. Defensible against any audit. No isotope-specific calibrated-source purchase required for routine work.
The visible difference shows up on the spectrum itself. Below: the same Cs-137 measurement with and without AutoSpect applied. The corrected version is what the spectrum would look like if the sample were perfectly captured by the crystal at every energy — that’s the spectrum your inspector and your isotope-ID software actually want to see. From there, the per-peak Spectrum Compensation step does the math from gammas to disintegrations, and the result is DPM you can trust.
Full PHA toolkit — built into the wipe counter
A standalone lab MCA with full Pulse Height Analysis runs $15K–$25K. The Wiper Gold ships the same toolkit — Zoom ROI, Peak ID, FWHM, Baseline, Dead-time, Marker — built into the wipe counter. Below: real screen captures from a working unit.
Define a Region of Interest by keV range, then zoom the plot into that window. The photopeak fills the display, resolution magnifies, and the parameter strip reports the ROI count, marker, and counts-at-marker live.
One-keystroke peak search across the stored 30-isotope library. Identifies photopeaks by matching their keV positions against known emission energies. The forensic tool when an unknown contamination shows up on a routine wipe.
Full Width at Half Maximum on the peak inside the current ROI. Calculated as FWHM = C/(B−A). Industry-standard detector resolution metric — a clean crystal returns a low %, a yellowing or cracked crystal returns a high %. The tool that tells you when a detector is aging.
Variable baseline subtract under keypad +/− control. Lifts the Y-axis baseline to suppress low-level counts and surface peak structure. User-controllable per scan — you decide where the floor is, the spectrum redraws against it.
Live graphical readout in the parameter strip. As count rate climbs, the DT bar fills left-to-right. Correction is applied automatically — the displayed CPM is already corrected. The bar is the diagnostic, not the correction. This screen is taken at 5,880,228 CPM; the system is still reporting accurately.
The marker is a "+" cross on the spectrum. Position it by entering a keV value (Set Marker dialog), or nudge it one channel at a time with MVMK +/− keys. MARK shows current keV, MKCT shows counts at that energy — both live as you move it.
Six PHA tools that on a standalone bench MCA cost $15K–$25K. The Wiper Gold ships them in the same chassis as the wipe counter, accessed by keypad shortcuts (ZMROI, PKID, BASE, MVMK) without leaving the live spectrum. No second instrument. No second bench. No second budget line.
Pulled directly from the unit’s MCA display, not a marketing render. Note the on-screen stats: CH 1:4096, KV 0:1000. The full energy range across 4096 channels at 0.25 keV/channel resolution. The 662 keV photopeak is sharp because the resolution is real.
Wiper-Gold-only feature. Walk through it — real screens, real workflow.
Use it like a calculator — no sample required. Punch numbers in via the keypad, get answers. Or count a real sample and project from that measurement. Either way, the engine works ±70 years from any reference date, and reports in DPM, µCi, or Bq depending on how your system is set up.
Type in a known activity (or count a sample), then project to any past or future date. Source-aging, RIA-tube assay setup, archive reanalysis. Sample optional.
Enter today’s activity (no sample needed), enter the target activity, get the date the source will reach it. Pure keypad math — trade-in planning, disposal scheduling, calibration windows.
Add a sample volume, get isotope concentration alongside activity. Combine with mode 1 or 2. Activity-per-mL without reaching for a separate calculator.
Spec sheets compare on numbers that are easy to print — channel count, well dimensions, weight, dimensions, calibration source. The capabilities above are the differences that matter day-to-day, after the instrument is on the bench. They’re harder to explain in a column-vs-column comparison, which is why most buyers default to price.
If you want to talk through your specific application — what isotopes you count, what energy range you actually need, whether the MCA capability matters for your QA program — call us. We’re the people who designed the instrument, not a sales channel.
No mockups, no marketing renders. These are the actual UI screens a technologist sees while running wipe tests, configuring isotopes, or analyzing a spectrum. Form follows function. The displays are pixel-rendered and monochrome on purpose — clear under any lab lighting, instantly readable, no glare, no eye strain across an 8-hour shift.
Run a wipe, see the result. Pass / Fail flags every wipe automatically against the location's stored trigger level. The MDA (minimal detectable activity) is calculated for every sample — satisfies any inspector.
Define a test once, recall it forever. Sixteen customizable test slots: isotope, count time, units, trigger level, decay correction, sample volume, iteration count. The technologist runs a test by selecting a stored entry, not by re-entering parameters.
Thirty isotopes, fully user-configurable. Energy windows, half-life, efficiency method, and per-isotope volume correction curves — all stored on the instrument. Three ways to set efficiency: enter a number, use AutoSpect™ (no source needed), or measure a calibrated source.
Pulse Height Analysis on the same instrument as the wipe counter. Live spectrum, ROI markers, peak ID, FWHM, baseline subtract. Set zoom, drag region edges, identify peaks against the stored isotope library.
Two unique features that distinguish the Wiper Gold from any other counter at this price point. Volume Correction normalizes results across different sample volumes per-isotope. The Decay Calculator solves date-of-decay or target-activity questions in either direction.
The screens above are real captures from a Wiper nPHD — the predecessor to today's Wiper Gold. The UI on the current Wiper Gold is identical. Same instrument lineage. Same workflow logic. Same pixel-perfect display optimized for lab readability.
Most product brochures show you a rendered UI mockup. This page shows you three real printouts from a Wiper Gold on our bench, scanned directly from the instrument’s own ESC/P 2 printer output. The same format prints in every operator’s lab worldwide — nothing about these is staged.
Every report carries the date and time stamp from the instrument’s internal clock, the test profile name, the configured trigger and count time, and the AUTOSPECT APPLIED notation when Spectrum Compensation is active. The on-screen MCA spectrum is rendered into each printout, giving the operator and the institution a permanent paper record of what the detector actually saw at the time of the count — not just the computed number. Results appear in DPM, CPM, Bq (decays per second), and nCi simultaneously so the lab doesn’t need a unit-conversion calculator.
The instrument-health check the firmware requires every 24 hours. A 1-minute count over the full 0–1000 keV window with the spectrum captured directly into the printout. The PASSED indicator inside the spectrum frame confirms the background is below the configured trigger. Test parameters — count time, window, trigger — are listed below the result line. This is the document an inspector wants to see in a daily QC binder.
Two-wipe survey using the GENERAL test profile, which scans every isotope in the on-instrument ISO Library and prints a per-isotope breakdown. Each wipe records the live MCA spectrum, the total DPM, AUTOSPECT APPLIED notation, and a tabular results section with eight columns: ISO, BKGND, DPM, CPM, Bq, nCi, HI keV, MDA. One row per isotope — Tc-99m, I-131, Ga-67, In-111, Co-57, Cr-51, Na-22, I-125, F-18, Ba-133, Cs-137, plus full-window FULL and LSFULL. Wipe 01 (top) is a clean blank. Wipe 02 (bottom) shows low-level residual contamination dominated by I-125 (618 DPM, 10 nCi) — under the 2000 DPM trigger, so the report header reads PASSED ISOTOPES.
A user-defined test profile named HOTLAB targeting F-18 only, demonstrating both pass and fail behavior side-by-side. The operator named the test, selected the isotope window, set the trigger level, and the result is recorded under that custom name — user-extensible ISO Library, demonstrated.
Both wipes use the same 2000 DPM trigger and 1-minute count time. Wipe 01 (top): 84 DPM, near-baseline spectrum, PASSED ISOTOPES. Wipe 02 (bottom): 56,863 DPM, classic F-18 spectrum showing the 511 keV photopeak structure, FAILED ISOTOPES. Same isotope, same trigger, same instrument — pass/fail logic is automatic, and the report header changes from PASSED ISOTOPES to FAILED ISOTOPES accordingly. No interpretation required from the operator.
The point of showing you these: the Wiper Gold produces documentation rich enough for ALARA records, accreditation audits, regulatory inspections, and your own QA program — out of the box, in the format your operators will print every day. Bq, nCi, DPM, CPM, MDA, and HI keV all appear on the same page. The MCA spectrum is part of the permanent record, not a screen the operator has to photograph.
Want a copy of all three reports as a single PDF? Download the Wiper Gold Sample Reports PDF (4 pages, ~325 KB) →
The Wiper Gold’s on-board library puts isotope handling, test definitions, and survey-location lists in one place — with AutoSpect compensation running in the background so DPM is always real, not approximated.
Two-stage compensation. AutoSpect corrects for crystal efficiency variation across the energy range so spectral plotting is genuinely accurate. Spectrum Compensation then adjusts for the gamma abundance of each isotope. Together they deliver accurate DPM on any gamma-emitting isotope up to 1 MeV from a single calibration source — no expensive per-isotope standards.
The Wiper Gold ships with 16 test slots. One is pre-configured at the factory for the Isopure (LS Full) assay — an iodine-purity test workflow that uses a dedicated low-energy spectral window. The other 15 are user-configurable: define each test by isotope, count time, units (CPM / DPM / nCi / µCi / mCi / Bq), trigger level, decay correction direction, sample volume, iteration count, and report format. Store it. Recall it next week with one keypress. You’re not limited to canned test parameters — but if Isopure is what you do, the assay is already set up.
Define the spots you wipe (hot bench, dose calibrator, sink, cart, exam table, etc.) once — the Wiper Gold holds over 30 location entries, arranged eight per page for fast lookup. The instrument prompts the technologist position-by-position and labels every wipe with the right location on the printout. Decoded handwritten labels are not a thing on this counter.
Counting a run of short-lived isotopes? Reverse decay normalizes every tube to the same instant. Need to project an isotope’s activity to a future time? The built-in decay calculator does it. Decay math, automated.
Set up the count, define the iteration count and interval, leave the bench. Up to 100 unattended iterations per sequence. The decay curve from successive counts verifies the sample’s apparent half-life — the textbook QC method for confirming radionuclidic identity and purity of cyclotron-produced F-18 and other short-lived isotopes. Also handles Cs-137 source-check QC, statistical Chi-Square verification, longer-count low-activity wipes, and end-of-day surveys.
If the 16-test default isn’t enough, or you want a specific configuration shipped pre-loaded, we’ll custom-program your Wiper Gold at the factory for your specific assay deck. Tell us what you count and what your trigger levels are; we’ll set it up before it leaves Elburn.
The Wiper Gold uses the same Genesys-platform detector design as our multi-well counters — just configured for a single-detector instrument. The result is a single-well wipe counter whose detector specs would make a comfortable showing on a counter twice the price.
By increasing crystal mass and thickness below the well by up to 400%, the Wiper Gold captures more counts — especially at 511 keV PET energies. Our design results in roughly 40% more crystal mass than typical single-well wipe counters, which translates directly into measured efficiency, lower MDAs, and better repeatability.
The Wiper Gold detector is surrounded by 0.75″ lead-equivalent shielding for radiation attenuation. Lower background means lower MDA. Combined with the extra crystal mass, the Wiper Gold delivers genuinely useful detection limits in a single-well form factor.
Inside the detector assembly, the photomultiplier tube (PMT) and crystal are wrapped in a mu-metal light shield. PMTs are extraordinarily sensitive to ambient light — even a small amount of light leakage creates enormous background counts because the PMT amplifies every photon. So a light-tight enclosure isn’t optional. What makes the LTI design different is the material: mu metal (a high-magnetic-permeability nickel-iron alloy) blocks light and channels external magnetic field lines around the PMT, eliminating the gain drift that magnetic fields would otherwise cause. The Earth’s magnetic field, nearby motors and transformers, fluorescent-light ballasts, MRI equipment in adjacent rooms — all the sources of magnetic interference that would otherwise show up as count-rate drift across the workday simply don’t affect the LTI PMT. Many lower-cost detectors solve light tightness with cheaper opaque materials (black anodized foil, plastic, paint) that provide no magnetic protection. LTI uses mu metal because one premium part does two engineering jobs.
Hardware specs only get you to honest counts. AutoSpect compensates for crystal efficiency variation across the energy range so spectral plotting is genuinely accurate. Spectrum Compensation adjusts for the gamma abundance of each isotope. Together: real DPM, no per-isotope calibrated standards.
4096-channel MCA with automatic dead-time correction. Industry-best resolution for a single-well wipe counter at this price point — up to 64× the channel resolution of competing wipe counters. Spectral peaks are sharp, isotope ID is reliable, and the MCA tools (zoom, ROI, PHA, peak search) are real, not marketing.
The Wiper Gold ships in two well configurations. The standard well — 0.67″ (17 mm) bore × 1″¼ (32 mm) deep — is sized for routine wipe vials and small samples, and easily accommodates standard 13 mm and 16 mm RIA / culture tubes, scintillation vials, and the typical hot-lab sample formats. The Wiper Gold LSV swaps in a deeper, wider chamber sized for the formats that don’t fit the standard bore — centrifuge vials (15 mL and 50 mL), larger reagent and storage vials, bulk-volume rinse samples, and large source standards. Same chassis, same electronics, same firmware, same 4096-channel MCA, same AutoSpect™ workflow across both. The only thing that changes is the chamber the sample sits in.
If your samples are standard wipe vials and small sample formats, the standard well is the right configuration — the everyday workhorse for nuclear medicine wipe surveys.
If you count centrifuge vials, larger reagent vials, bulk-volume rinse samples, or larger source standards, the LSV chamber is sized for the work — without needing a separate instrument.
Centrifuge vials. Larger reagent and storage vials. Bulk-volume rinse samples. The LSV’s sample chamber accepts the formats that don’t fit a standard wipe-test well. Counts the same range of isotopes; counts the volumes the standard Wiper Gold can’t.
Same NaI(Tl) detector approach as the rest of the Wiper line — extra crystal mass below the well for high-energy stopping power, full 4096-channel MCA, automatic dead-time correction. Larger sample chamber, same detector philosophy.
If your team is already trained on a Wiper Gold, they’re trained on a Wiper Gold LSV. Same firmware, same 16-test library, same 20 programmable wipe locations, same AutoSpect compensation, same record format. Drop-in workflow continuity.
The LSV uses the Wiper Gold chassis — ~12″ wide, <30 watts, 22 pounds, 100–240 VAC universal. Sized for a satellite imaging center, a research bench, or a single-cyclotron pharmacy. Ships in days, not months.
If your daily sample list looks like the work below, the LSV is the right configuration. If it doesn’t, the standard well covers you and saves you the upcharge.
Every other spec on the Specifications tab applies to both wells. The lines below are the ones that change when you spec the LSV configuration.
| Well Dimensions — Standard vs LSV | |
|---|---|
| Standard well | 0.67″ (17 mm) bore × 1″¼ (32 mm) deep — fits 13 mm / 16 mm RIA and culture tubes, standard scintillation vials, routine wipe vials |
| LSV well | [VERIFY exact bore × depth] — sized for 15 mL and 50 mL centrifuge vials, larger reagent and storage vials, bulk-volume rinse samples, and large source standards |
| LSV Detector | |
| Sample chamber | Large-volume configuration for samples that don’t fit the 0.67″ standard bore |
| Crystal design | Same as standard Wiper Gold — extra mass below the well for high-energy stopping power |
| Well liner | Removable plastic liner prevents detector contamination (LSV-sized) |
| Same as Standard Wiper Gold | |
| Energy range | Up to 1 MeV (gamma + X-ray) — unchanged |
| Count rate capability | Over 300,000 CPS — unchanged |
| MCA | 4096-channel with automatic dead-time correction — unchanged |
| Shielding | 0.75″ equivalent — unchanged |
| AutoSpect™ | Same two-stage compensation as standard Wiper Gold |
| Test library | 16 customizable tests, 20 programmable locations — same library |
| Calibration sources | Cs-137, Na-22, or Co-57 — same options |
| Chassis & power | Same compact bench footprint, <30W, 100–240 VAC universal |
The Wiper Gold ships as one of two well configurations — ordered per unit at build time. Both wells use the same chassis and electronics; the chamber is the only thing that changes.
Everything below is direct from LTI engineering. If you need something specific that isn’t listed, call us and we’ll send it.
The full 8-page product brochure — the standard handout we send when an evaluation starts. Covers value proposition, detector design, AutoSpect™ methodology, and full tech specs.
Software companion for the Wiper family — converts every printed report into a properly named PDF, files it into a searchable digital archive, and exports structured CSV for your LIS/LIMS. Replaces the dot-matrix data path without changing the instrument.
Specs, configuration questions, integration help, evaluation programs, training, or service — one call connects you to the people who designed and built it.
Service direct from LTI Elburn — field-replaceable parts shipped to your biomed for in-house swap, or send-in repair if it’s beyond a parts swap. The Wiper Gold is small enough to ship UPS, so round-trip to the people who built it is faster (and cheaper) than a service-truck visit used to be.
Tell us about your workflow, throughput, isotope range, and how you currently log results. We’ll come back with a configuration and a quote — not a sales pitch.
A few quick details, then your download will start automatically.