What Guth Laboratories does

Guth Laboratories, Inc. is a privately held Pennsylvania corporation founded in 1976 and headquartered at 590 North 67th Street, Harrisburg, PA. The company designs and manufactures precision alcohol breath testing and calibration equipment, with a product portfolio anchored by the 12V500 Duplex Alcohol Simulator (an electronically temperature-controlled water-alcohol instrument maintaining solution at 34°C ± 0.05°C via dual temperature probes and a patented Controlled Head Space Heater, U.S. Patent No. 7,493,793), supported by legacy simulators (34C, 10-4D, 2100), standalone simulator pumps (AFT-C, 10LM-AP, 10LM-EC, dual 10/20 LPM), premix and certified alcohol reference solutions, dry gas cylinders and regulators, patented mouthpieces, fuel cells, digital RTD thermometers, and a Sure-Loc connector accessory family.

The business serves law enforcement agencies, federal/state regulatory bodies (DOT, NRC), military, hospitals and clinics, and educational institutions worldwide, with products NHTSA-approved (listed on the Conforming Products List), UL-approved, and traceable to NIST. Revenue is generated through direct-to-consumer e-commerce (guthlabs.com) and direct phone sales (717-564-5470 / 1-800-233-2338) using one-time unit pricing across hardware ($5–$1,373) and consumables (mouthpieces, reference solutions, dry gas). The company does not appear to use third-party distributors, and growth is supported by recurring consumable demand tied to installed simulator fleets plus "numerous sole supplier state contracts" for reference samples. No external funding, acquisitions, or leadership changes are disclosed in the available data.

Name

Guth Laboratories

Legal name

Guth Laboratories, Inc.

Website

https://guthlabs.com

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

11–50 employees

Short description

Guth Laboratories, Inc. is a privately held Harrisburg, PA manufacturer founded in 1976 that designs and produces NHTSA-approved, NIST-traceable alcohol breath testing simulators, reference solutions, mouthpieces, and accessories for law enforcement, government agencies, hospitals, military, and educational institutions worldwide.

Ownership category

akta.pro rank

Product category

Breath Alcohol Testing Calibration Equipment

NAICS

Analytical Laboratory Instrument Manufacturing (334516), Testing Laboratories and Services (54138)

SIC

Laboratory Analytical Instruments (3826), Laboratory Apparatus & Furniture (3821)

akta.pro primary industry

Metrology, Calibration & Testing Equipment (Balances, pH/DO, Standards) (HLAGAIAL)

akta.pro secondary industry

General Lab Equipment (Centrifuges, Incubators, Shakers, Ovens) (HLAGAIAC)

Keywords

• Breath alcohol testing
• Alcohol breath simulators
• Calibration equipment
• Reference ethanol solutions
• Evidential breath analyzers

Headquarters

HQ city

Harrisburg

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Product Sales: Direct sale of alcohol breath testing equipment including simulators, testing supplies, alcohol solutions, and accessories through e-commerce platform and phone sales.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Guth Laboratories designs and manufactures high-precision alcohol breath testing calibration equipment, including electronically temperature-controlled water-alcohol breath simulators (12V500 Duplex, 34C, 10-4D), simulator pumps, NIST-traceable premix and certified alcohol reference solutions, dry gas cylinders and regulators, patented mouthpieces, digital thermometers, and replacement parts and connectors. Products are NHTSA-approved, UL-listed, and NIST-traceable, and are sold to law enforcement, government agencies, hospitals, military, and educational institutions worldwide.

Product overview

Guth Laboratories is a specialized manufacturer of high-precision alcohol breath testing products established in 1976. The product portfolio centers on breath alcohol calibration equipment including the flagship 12V500 Duplex Alcohol Simulator and supporting simulators (34C, 10-4D, 2100). Core offerings are complemented by simulator pumps (AFT-C, 10LM-AP, 10LM-EC, Dual Air Pump), alcohol reference solutions (Premix and Certified Stock), and dry gas testing supplies (cylinders and regulators). Testing accessories include patented mouthpieces (ULTRAP, Disposable, S-D2/S-D5), fuel cells, digital thermometers, test record tickets, and replacement parts (containers, gaskets, concentration retainer tops). Connectivity accessories (Sure-Loc fittings) enable integration with third-party breath analyzers including CMI models. All products are tested and approved by NHTSA and UL, with traceability to NIST standards.

Differentiator

Problem solved

Functional benefit

Products and services

• 12V500 Duplex Alcohol Simulator State-of-the-art electronically temperature-controlled water-alcohol instrument providing precise calibration standards for testing and calibrating alcohol breath analyzers. Maintains temperature at 34°C ±0.05°C and is used by law enforcement, government agencies, and laboratories worldwide.
• 34C Simulator NHTSA-approved alcohol breath calibration simulator with adjustable solid state temperature controller and chrome plated or stainless steel wet chamber components, used for calibrating evidential breath analyzers.
• 34C Rebuilt 110 Volt Simulator Reconditioned 34C simulator with 90-day warranty, available to US domestic market only, offered as a lower-cost alternative to a new 34C simulator.
• 10-4D Simulator Digital readout microprocessor-controlled water-alcohol breath simulator with graduated laboratory glass container and external fuse protection, used for calibrating breath alcohol analyzers.
• 2100 Simulator NHTSA-approved digital water-alcohol breath simulator with RS-232 9600 Baud serial output of temperature and instrument status; now an obsolete legacy model replaced by the 12V500.
• AFT-C Simulator Pump Standalone variable simulator pump with adjustable flow rate (5.5-10 LPM in 0.5 LPM increments), customizable sample duration (1-30 seconds), and configurable cycle testing for use with alcohol breath simulators.
• 10 LPM / 20 LPM Dual Air Pump Dual flow rate precision standalone air pump with switch-selectable 10 or 20 LPM output for calibration of ignition interlock systems and alcohol breath test instruments.
• 10LM-AP Standalone Simulator Pump All-metal standalone simulator pump with 10 LPM output through female Sure-Lok connector and variable timed output (1-23 seconds) for breath alcohol simulator calibration.
• 10LM-EC Economy Simulator Pump Economy simulator pump with lightweight high-impact ABS plastic construction and 10 liters per minute output at >1 PSI for breath alcohol simulator calibration.
• Premix Alcohol Reference Solution Certified premixed alcohol reference solution prepared for immediate use, eliminating field mixing; available in concentrations from .02% to .40%, analyzed by gas chromatography and NIST traceable.
• Certified Alcohol Stock Solution Stock solution ampoules prepared using Type I water and USP ethyl alcohol for end-users to prepare working solutions in the field; packaged 16 ampoules per box.
• Dry Gas Cylinder NHTSA-approved and NIST-traceable dry gas ethanol breath standard available in 38, 58, and 105 liter sizes with concentrations including .038, .040, .080, .100 and custom options.
• Dry Gas Regulator Regulator designed for use with Guth dry gas cylinders, available in 1.5 LPM and 6 LPM flow rate options.
• Guth Fuel Cell High quality electrochemical device that generates voltage across output electrodes when ethanol gas sample is introduced; designed as original or replacement component in hand carried and evidential alcohol breath analyzers.
• Digital Thermometer w/ 7" Probe Handheld RTD reference standard thermometer with 7-inch stainless steel probe, ultra-high accuracy ±0.02°C, 0.01°C resolution, and range of -200 to 200°C for calibration and verification.
• Digital Thermometer 5000 High precision digital thermometer with T-View software for recording, charting and storing data; ultra-high accuracy ±0.02°C, range -20 to 130°C, USB output to computer.
• Simulator Container Replacement glass container fitting Guth Models 10-4, 10-4D, 34C, 2100, and 12V500 simulators.
• Guth ULTRAP Mouthpieces Patented mouthpieces made of crystal clear virgin styrene with ultrasonically sealed seams; internal air passages and traps with baffles inhibit saliva and foreign material flow into breath analyzers, sold in bags of 100 or boxes of 1000.
• Disposable Mouthpiece Shatter-resistant mouthpiece with safety check valve preventing subject suck-back, integrated spit trap with high-capacity baffle system, and built-in lip guard; compatible with instruments using .250" ID opening including CMI 8000 and 9000 models, 100 count per package.
• S-D2 / S-D5 Mouthpieces Designed for use with Intoxilyzer S-D2 and Intoxilyzer S-D5; features small flange and restricted exit diameter to control breath flow, 250 per bag, individually wrapped.

Quantifiable outcome

• Temperature stability of better than ±0.05°C in 12V500 simulator
• +4 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Market position

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/guth-laboratories-inc.

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Guth Laboratories