Dossier · Private startup · 2 independent sources
Lishtot
Last updated: Jul 31, 2026
Jerusalem-based water-technology startup developing portable, non-contact water-quality testers that use electric-field sensing, onboard classification, and a mobile app to flag possible contamination within seconds. Its TestDrop products are positioned as low-cost screening tools for consumers, field teams, and distributed water-monitoring programs, not as substitutes for accredited laboratory confirmation.
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Lishtot is an independent Jerusalem startup founded in 2015 that develops portable water-quality screening hardware. Its public product pages currently present TestDrop+ and TestDrop Pro: handheld devices intended to test water in a suitable plastic cup or, for some bottles, through the container. The company says its sensors do not contact the sample and instead measure electric-field changes associated with the interaction of water, contaminants, and the testing vessel. A local red/blue signal is designed to give an immediate warning, while the Pro workflow adds a mobile application for richer results and history. The product pages also describe a replaceable coin-cell battery, lightweight form factors, and testing in seconds. These are concrete productization signals, although they remain primarily company-reported claims.
The technical proposition is broad screening rather than analyte-by-analyte quantification. Lishtot says its classification system can respond to categories including heavy metals, biological material, organics, pesticides, and toxins, and its technology page links to selected protein, PFOS, and field-test reports. That breadth could make the device useful as a triage layer: a user can identify a sample that deserves laboratory attention without carrying reagents or waiting for incubation. The tradeoff is equally important. The FAQ acknowledges that false results are possible, explains that plastic type and residue can affect readings, and says the device is not intended to be interpreted as a universal declaration that water is safe or unsafe. The product should therefore be evaluated as a screening and prioritization tool until independent, current, matrix-diverse validation demonstrates otherwise.
Commercially, Lishtot targets consumers, households with wells or filters, travelers, outdoor users, researchers, and organizations that need many low-cost observations. The app and proposed global water map add a data-network angle: repeated readings could help reveal local variation, identify sites for confirmatory sampling, or support community and humanitarian monitoring. However, the public evidence reviewed does not establish current revenue, recurring software revenue, municipal-scale deployments, major enterprise customers, or a disclosed funding round. LinkedIn lists the company as privately held with 2-10 employees, and the site retains direct-purchase and distribution-oriented pages. That footprint suggests a small, product-oriented operation with continuing public presence, but it is not enough to infer commercial scale, market share, or financial health.
Competitive pressure comes from both high-trust incumbents and inexpensive substitutes. Hach, Palintest, Thermo Fisher, LaMotte, and certified laboratories provide more established workflows, quantified measurements, and procurement credibility. Reagent strips, coliform kits, TDS meters, and utility sampling are often less convenient but familiar and easier to benchmark. Lishtot can differentiate when speed, portability, no-reagent operation, and frequent screening matter; it will struggle where a customer needs legally defensible concentration data, a validated pathogen result, or an established service network. The central commercial question is whether the company can convert a compelling consumer demonstration into repeat usage, channel distribution, and institutional workflows that reliably trigger paid confirmatory testing or remediation.
The dual-use case is credible but bounded. In disasters, remote sites, refugee or humanitarian operations, and expeditionary logistics, a lightweight screening device could help teams rank water sources for laboratory follow-up when time and equipment are limited. A secure offline-first workflow could also support force-health protection or damaged-infrastructure assessment. Nothing in the reviewed sources demonstrates military adoption, classified use, government procurement, or field performance under operational conditions. Strategic diligence should therefore focus on ruggedization, battery and calibration stability, offline data handling, tamper resistance, secure synchronization, error-rate reporting, chain of custody, and the governance of map data. Lishtot is best characterized as a technically differentiated water-resilience startup with plausible security adjacency and substantial validation, scale, and procurement uncertainty.
Dual-Use Assessment
The core capability has credible, though not publicly demonstrated, dual-use potential. A small passive sensor that rapidly screens water without reagents could support humanitarian response, remote-site logistics, civil-defense triage, and military force-health protection. The app and map layer could help prioritize follow-up sampling around damaged or disrupted infrastructure. Public evidence does not establish a defense customer, government contract, secure deployment, or validated detection performance in operational military environments, so the defense case is an adjacency and diligence hypothesis rather than demonstrated traction.
Strategic Fit Assessment
Lishtot has a differentiated product concept and a visible commercial offering, but the public record is too thin to treat it as a high-confidence priority signal. The company lists TestDrop+ and TestDrop Pro for direct purchase, reports a small 2-10 person organization on LinkedIn, and publishes technical explanations plus selected third-party test reports. Those are meaningful productization signals, not evidence of repeatable enterprise scale. The principal diligence questions are independent sensitivity and specificity across real-world water chemistries, the boundary between a contamination warning and a regulatory result, customer retention and channel economics, manufacturing continuity, intellectual-property defensibility, and the current state of the app and cloud service. Funding, revenue, customer concentration, certification status, and large deployments are not reasonably confirmable from the reviewed public sources. The legacy strategically relevant flag therefore remains false pending stronger operating and validation evidence.
Strategic Value to U.S.-Israel Alliance
Moderate strategic value for water resilience and distributed sensing. Lishtot could be useful as a lightweight screening layer that helps people or response teams decide where to collect expensive confirmatory samples, especially when laboratories are distant or infrastructure is disrupted. Its value to defense and national-security users would depend on ruggedization, offline operation, secure data handling, documented error rates, and procurement-grade validation. The current public evidence supports strategic relevance as an enabling technology, but not a proven defense capability or critical-infrastructure control system.
Key Technologies
- non-contact electric-field sensing around a water sample and vessel
- embedded sensor calibration and threshold classification for water-quality screening
- portable low-power electronics with red/blue local indication
- Bluetooth and NFC device-to-mobile connectivity
- mobile application for test history, water scoring, and optional geolocation
- cloud aggregation and map-based visualization of user-generated water observations
Use Cases & Applications
- consumer screening of tap, bottled, filtered, and natural water
- well-water and household point-of-use troubleshooting before laboratory follow-up
- rapid humanitarian and disaster-response triage of candidate water sources
- field screening for remote work sites, camps, and expeditionary logistics
- municipal or utility spot-checking to prioritize confirmatory samples
- environmental and citizen-science sampling with location-tagged observations
- industrial or commercial water-quality pre-screening where a red/blue warning is useful
Sources and verification
This profile is based on public-source research, Claw & Talon curation, and editorial judgment. Inclusion does not imply endorsement, partnership, investment, or a recommendation to transact. Readers should still confirm current status, customers, funding, and product claims before relying on this profile. The editorial policy explains how profiles are researched, where automated drafting is used, and how corrections work; the research methodology documents how evidence is graded, what counts as an independent source, and why some profiles are excluded from search indexing.
This record lists 8 public references used for company identity, status, positioning, or material-claim review.
Public sources
The links below are visible public references used for source discipline around company identity, status, funding, customer, acquisition, public-company, or other material claims where available.
- Official Lishtot technology page Describes the electric-field sensing premise, device signal, app connection, claimed contaminant classes, and links to the company's performance reports.
- Official Lishtot TestDrop product page Lists current TestDrop+ and TestDrop Pro offerings, prices shown on the page, connectivity, battery-life claims, operating format, and linked field/laboratory reports.
- Official Lishtot FAQ Documents the five-second testing workflow, offline behavior, plastic-vessel limitations, and the company's warning that false results are possible.
- Lishtot LinkedIn company profile Lists Jerusalem headquarters, 2015 founding, privately held status, water-testing specialties, and a 2-10 employee range.
- Official TestDrop Pro performance reports Company-hosted report describing a third-party protein-detection test; useful evidence of testing activity but not a complete independent validation record.
- The Times of Israel coverage Independent historical coverage of the TestDrop product, company leadership, and the intended water-data mission; claims should be treated as historical rather than current traction evidence.
- TIME - Lishtot featured in TIME's 50 Genius Companies (2018) Independent profile describing TestDrop Pro, electric-field sensing approach, and company's mission to democratize water data.
- Official website
- Profile update timestamp Last updated in the Claw & Talon database on Jul 31, 2026.
Related sector
See the Semiconductors & DeepTech Hardware sector page for market context, related subcategories, and other Israeli companies in this part of the database.