Environmental Supply Company

What Environmental Supply Company does

Environmental Supply Company, Inc. (ESC) is a privately held US corporation headquartered in Durham, North Carolina, that manufactures source sampling and stack testing equipment meeting or exceeding US EPA requirements. The company sells directly to environmental testing professionals and industrial facilities through a toll-free phone line, its website, and a network of international distributors, targeting global customers requiring regulatory-grade emissions measurement.

ESC's product line is organized around four core categories: Isokinetic Sampling Systems (methods 5 automated and manual), Gas Sampling Systems (methods 6, 7, 8A, 18, 23, 26, VOST), Flow Measurement Equipment, and Mercury Systems. These are supported by a deep catalog of components — sampling consoles, pumps, probes, nozzles, umbilicals, glass filter assemblies in 2/3/4-inch sizes, precision ground glassware with ball-and-socket connections, Tedlar gas sampling bags (manufactured in-house), flow adapters, and method-specific systems for dioxin, PM10/PM2.5, condensibles, and hexavalent chromium. Underlying technical differentiators include precision-ground glass for leak-proof sealing, NIST-traceable electronics such as the TK-520KN thermocouple simulator, and the digital UNI-VOS-ACD low-flow console with 0.01 L resolution.

Revenue is generated primarily through one-time hardware sales of equipment and components, with secondary streams from in-house calibration services (wind tunnel calibration of Pitots, 3D probes, critical orifices, dry gas meters, and consoles) and from consumable replacement parts (O-rings, frits, filter media, Tedlar bags). Pricing is quote-based with quantity discounts on selected consumables, and no recurring subscription or service contract model is disclosed. The company is privately held with no disclosed parent, subsidiaries, funding rounds, or management team.

Name

Environmental Supply Company

Legal name

Environmental Supply Company, Inc.

Website

https://environsupply.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

11–50 employees

Short description

Environmental Supply Company (ESC) is a privately held Durham, North Carolina manufacturer of US EPA–compliant source sampling and stack testing equipment, selling isokinetic and gas sampling systems, flow measurement instruments, mercury systems, and consumables to environmental testing professionals and industrial facilities worldwide.

Ownership category

akta.pro rank

Product category

Environmental Testing Equipment

NAICS

Analytical Laboratory Instrument Manufacturing (334516), Other Measuring and Controlling Device Manufacturing (334519)

SIC

Laboratory Analytical Instruments (3826), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Stack/Source Emissions Testing & CEMS Support (EUAHACAB)

akta.pro secondary industry

Continuous Emissions Monitoring Systems (CEMS) & Stack Testing (EUAHADAA)

Keywords

• Stack testing equipment
• Isokinetic sampling systems
• EPA compliance testing
• Emissions monitoring equipment
• Gas sampling systems

Headquarters

HQ city

Durham

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Equipment and Hardware Sales: Sale of source testing equipment including isokinetic sampling systems, consoles, probes, nozzles, umbilicals, filter assemblies, glassware, and accessories. Products sold as one-time purchases with various EPA method compliance certifications.
2. Calibration Services: In-house calibration services for Pitots, 3D probes, critical orifices, dry gas meters, and console equipment. Includes NIST traceable calibration certifications.
3. Replacement Parts and Components: Ongoing sales of replacement parts including O-rings, frits, filter media, pinch clamps, and other consumable/accessory items

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Environmental Supply Company manufactures EPA-compliant source testing and stack emissions monitoring equipment, including isokinetic sampling systems, gas sampling systems, flow measurement instruments, and mercury sampling systems. The company sells precision-ground glassware, Tedlar gas sampling bags, sampling consoles, probes, nozzles, and umbilicals as standalone products or integrated systems. Complementary in-house services include wind tunnel calibration with NIST traceable certification, design, and engineering support for environmental compliance testing professionals worldwide.

Product overview

Environmental Supply Company offers a comprehensive portfolio of EPA-compliant source testing equipment for stack emissions monitoring. The product line centers on four core categories: Isokinetic Sampling Systems (including Method 5 automated and manual configurations), Gas Sampling Systems (covering Methods 6, 7, 8A, 18, 23, 26 and VOST), Flow Measurement Equipment, and Mercury Systems. These core offerings are supported by modular components including sampling consoles, pumps, probes, nozzles, umbilicals, and calibration equipment. The company also provides extensive glassware and filter assembly products in multiple sizes (2", 3", 4") with precision ground components, Tedlar sampling bags, temperature controllers, flow adapters, and method-specific sampling systems. Services include in-house calibration and engineering design.

Differentiator

Problem solved

Functional benefit

Products and services

• Isokinetic Sampling Systems
• Gas Sampling Systems
• Flow Measurement Equipment
• Mercury Systems
• Calibration Equipment and Services
• Tedlar Gas Sampling Bags

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• International DistributorsminorChannel Partner/ Reseller/ DistributorNetwork of international distributors that sell and support Environmental Supply Company products in markets outside the United States.

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• SICK AG: SICK AG is a major industrial sensor and emissions monitoring incumbent offering CEMS and stack gas analyzers, providing broader emissions measurement capabilities that compete with ESC's source testing equipment for industrial compliance buyers.
• HORIBA: HORIBA is a broad analytical and measurement instrument incumbent with a dedicated emissions monitoring portfolio (stack gas analyzers, CEMS) that competes with ESC's stack testing equipment for industrial environmental compliance customers.
• Thermo Fisher Scientific: Thermo Fisher is a broad analytical instrument incumbent whose environmental monitoring portfolio (including CEMS and stack gas analyzers) overlaps with ESC's emissions measurement equipment across industrial compliance customers.
• AMETEK: AMETEK is a broad industrial instrument manufacturer whose process and analytical instruments group produces equipment for emissions monitoring and stack testing, serving the same industrial compliance buyer base as ESC.

Direct peers

• Tisch Environmental: Tisch Environmental is a direct competitor specializing in high-volume source testing equipment and ambient air sampling, with overlapping product lines in EPA Method 5 glassware, isokinetic systems, and PM sampling.
• SKC Inc. SKC manufactures air sampling pumps, sampling media, and source testing accessories, overlapping with ESC's gas sampling systems and Tedlar bag consumables for industrial hygiene and stack testing applications.
• Sierra Instruments (McMillan Group): Sierra Instruments produces mass flow meters and flow measurement instruments used in stack testing and emissions monitoring, directly comparable to ESC's flow measurement and dry gas meter product lines.
• Instrumentation Industries Inc. Instrumentation Industries is a smaller specialty manufacturer of stack sampling equipment and S-type pitot tubes for source emissions testing, directly overlapping with ESC's flow measurement and isokinetic sampling products.
• Apex Instruments: Apex Instruments is a direct competitor manufacturing isokinetic source sampling equipment and stack testing systems for EPA compliance, offering very similar product categories (probes, consoles, glassware) to ESC.

Emerging players

• Air Metrics: Air Metrics is a smaller niche manufacturer specializing in continuous emissions monitoring and stack flow monitoring, offering partial overlap with ESC's flow measurement and emissions sampling categories.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/Environmental-Supply-Company-168599589824157
• LinkedInlinkedin.com/company/environmental-supply-company

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 Environmental Supply Company