MOSS

What MOSS does

MOSS Inc. is a Pasadena, Maryland–based specialty manufacturer of liquid-stable immunoassay reagents, founded in 1991 and operating for 34 years. Its product portfolio centers on liquid-stable enzyme substrates (HRP and AP detection in soluble, insoluble, and chemiluminescent formats), liquid-stable conjugates (PE, HRP, AP), stabilizing diluents (MossGuard), conjugation kits (MOSS-Link), and supporting assay buffers, all manufactured at an ISO 9001:2015-certified facility in Maryland with 2000-liter batch capacity and shelf-life stability of 36–48+ months. The underlying technology is a proprietary liquid stabilization chemistry that delivers demonstrated performance (e.g., no HRP activity loss over 3 years at 4°C; 100% conjugate activity retention after 60 days at 37°C), and is the primary technical differentiator versus lyophilized or shorter-shelf-life alternatives.

The company sells primarily to in-vitro diagnostic (IVD) manufacturers, veterinary diagnostic companies, biotechnology and life sciences firms, and contract research organizations. Revenue is generated through one-time B2B reagent product sales, bulk custom manufacturing services (up to 2000L batches with custom bottling, labeling, and packaging), custom conjugation and labeling services, and immunoassay/kit development services. Pricing is quote-based and not publicly disclosed. Distribution is a hybrid of direct enterprise sales — led by the CEO and VP Sales via phone, email, website inquiry, and trade show presence at events such as AACR and ADLM/AACC — and select third-party distributors serving global diagnostics and life sciences markets. In February 2025, MOSS received USDA APHIS listing (MD-TEC-0009), explicitly positioning the company to expand reagent supply into European veterinary diagnostic channels. A separate data source flags a December 2025 acquisition by Vomela Companies, but the source's description of the target as a "premium event graphics and structures" producer is inconsistent with MOSS's immunoassay reagent business; the bio-reagent company shows clear continuing-operations signals (AACR 2026 booth, ongoing trade show activity) and this acquisition entry should be treated as a data-integrity flag pending independent confirmation.

Name

MOSS

Legal name

MOSS Inc.

Website

https://mossbio.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

11–50 employees

Short description

MOSS Inc. is a Maryland-based, ISO 9001:2015-certified manufacturer of liquid-stable immunoassay reagents — substrates, conjugates, stabilizing diluents, and conjugation kits — serving IVD manufacturers, veterinary diagnostic companies, biotechnology firms, and CROs via direct B2B sales and bulk custom manufacturing.

Ownership category

akta.pro rank

Product category

Immunoassay Reagent Manufacturing

NAICS

In-Vitro Diagnostic Substance Manufacturing (325413), Chemical Manufacturing (325)

SIC

In Vitro & In Vivo Diagnostic Substances (2835), Miscellaneous Chemical Products (2890)

akta.pro primary industry

Reagents, Chemicals & Assay Kits (Buffers, Antibodies, ELISA, Enzymes) (HLAGAIAI)

akta.pro secondary industries

Bioprocess Consumables & Reagents (resins, membranes, media components, buffers) (HLAAAJAI), Raw Materials & Critical Reagents Supply (Media/Resins/Cytokines) (HLAGAGAI)

Keywords

• Immunoassay reagents
• Liquid stable substrates
• Diagnostic conjugates
• Bulk reagent manufacturing
• Veterinary diagnostics

Headquarters

HQ city

Pasadena

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Reagent Product Sales: Sale of liquid-stable immunoassay reagents including substrates, conjugates, stabilizing diluents, and supporting assay reagents to diagnostic and life sciences manufacturers.
2. Bulk Reagent Manufacturing Services: Custom reagent manufacturing at scale (up to 2000L batches) with bottling, labeling, and packaging services. End-to-end support from development to commercialization.
3. Conjugation and Labeling Services: Multi-gram batch conjugation services with signal-to-noise optimization, background reduction, and scalable production from small lot to multiple gram scale-up.
4. Immunoassay and Kit Development Services: Assay development, optimization, and kit development services with parameter optimization for sensitivity, specificity, and reproducibility.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

MOSS Inc. manufactures liquid-stable immunoassay reagents — including substrates, conjugates, stabilizing diluents, conjugation kits, and supporting assay buffers — for IVD manufacturers, life sciences, pharma, biotechnology, and veterinary diagnostic companies. The company also provides bulk reagent manufacturing (up to 2,000L batches), custom conjugation and labeling services, and immunoassay/kit development under ISO 9001:2015 quality standards from its Pasadena, Maryland facility.

Product overview

MOSS is a specialized manufacturer of high-quality liquid-stable immunoassay reagents for the IVD, life sciences, pharma, biotechnology, and veterinary diagnostics industries. The core product portfolio centers on liquid-stable substrates (soluble, insoluble, and chemiluminescent formats for HRP and AP enzymes), specialized conjugates (PE, HRP, AP conjugates), MOSS-Link conjugation kits, MossGuard stabilizing diluents, and supporting assay reagents. These products are designed to work together across immunoassay, flow cytometry, and multiplexing platforms including Luminex. MOSS offers comprehensive services including bulk reagent manufacturing (up to 2000L batches), conjugation and labeling services, and immunoassay/kit development. Products are manufactured at the ISO 9001:2015 certified Maryland facility with typical stability of 36-48+ months.

Differentiator

Problem solved

Functional benefit

Products and services

• MOSS Liquid Stable Substrates High-quality liquid-stable enzyme substrates for horseradish peroxidase (HRP) and alkaline phosphatase (AP) detection, available in soluble, insoluble, and chemiluminescent formats. Used by IVD manufacturers and life sciences researchers in ELISA, immunoblotting, microarray, and bead-based assays.
• MOSS Specialized Conjugates Liquid-stable conjugates including Phycoerythrin (PE), Horseradish Peroxidase (HRP), and Alkaline Phosphatase (AP) conjugates with 48+ month stability. Designed for immunoassays, flow cytometry, and multiplexing platforms.
• MOSS-Link Conjugation Kits Ready-to-use conjugation kits for producing custom IgG conjugates with HRP, RPE, FITC, Biotin, and AP. Includes HRP-IgG Kit, RPE-IgG Kit, Biotin Labeling Kit, FITC-IgG Labeling Kit, and AP-IgG Conjugation Kit for labs needing reproducible custom conjugates.
• MossGuard HRP Stabilizing Diluents Stabilizing diluents that preserve the functional integrity and activity of horseradish peroxidase (HRP) conjugates at dilute concentrations for long-term storage. Available in multiple formulations with customizable colors and BSA concentrations for diagnostic manufacturers.
• MOSS Supporting Assay Reagents Optimized immunoassay buffers including conjugate diluents, sample preparation buffers, bead coupling buffers, stop solutions, assay buffers, and hybridization buffers for consistent assay performance.
• MOSS Bulk Reagent Manufacturing Services Large-scale bulk reagent manufacturing for diagnostic and life sciences customers, with 2,000-liter batch capacity and multiple lots produced weekly. Includes custom formulations, bottling (15mL bottles to 1,000L IBCs), labeling, and packaging under ISO 9001:2015.
• MOSS Conjugation and Labeling Services Multi-gram batch conjugation services with signal-to-noise optimization, signal enhancement, and background reduction for diagnostic and research customers. Production is scalable from small lots to multiple gram quantities.
• MOSS Immunoassay and Kit Development Services Assay and kit development services including parameter optimization for sensitivity, specificity, and reproducibility, with commercialization support from development through production for IVD and life sciences manufacturers.

Quantifiable outcome

• Products stable for 36+ months (substrates) and 48+ months (conjugates)
• +3 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 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.

• Vomela CompaniesmajorOthers · 16 December 2025Moss Inc. was acquired by Vomela Companies, forming a global experiential events production powerhouse. The integration expands Vomela's service offerings, international reach, and operational scale. This represents Moss being absorbed into Vomela's portfolio rather than a traditional partnership.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Bethyl Laboratories: Specialist antibody manufacturer offering validated antibodies and custom conjugation services. Comparable as a privately-held niche reagent producer serving diagnostic manufacturers and research end-users.
• SouthernBiotech: Birmingham, Alabama-based manufacturer of antibodies and immunoassay reagents including HRP/AP conjugates and secondary reagents. Closely comparable as a similarly-sized, privately-held specialist serving IVD and life sciences customers with a comparable product portfolio.
• Jackson ImmunoResearch: Specialist manufacturer of affinity-purified secondary antibodies and custom antibody conjugates (HRP, biotin, fluorescent). Comparable as a niche, privately-held reagent producer focused on conjugation chemistry for immunoassay and detection applications.
• Rockland Immunochemicals: Privately-held manufacturer of antibodies, antibody conjugates and immunoassay reagents. Directly comparable product range (antibody conjugates, buffers, assay reagents) and similar B2B supply model to diagnostic and research manufacturers.
• AAT Bioquest: Specialist developer of fluorescent and colorimetric immunoassay reagents including substrates and conjugates. Comparable as a niche reagent manufacturer addressing similar ELISA, multiplexing and immunoassay end-markets as MOSS.
• Fitzgerald Industries International: Manufacturer and distributor of antibodies, antigens and immunoassay reagents for the IVD and research markets. Comparable as a similarly-sized specialist supplier with overlapping assay-reagent product lines.
• Surmodics: Historically operated a Diagnostics Reagents business producing immunoassay reagents and substrates; even post-divestiture it remains a comparable reference point for the immunoassay reagent niche MOSS serves.

Broad incumbents

• Bio-Rad Laboratories: Large, diversified life sciences company with a substantial IVD and immunoassay reagent business. Comparable as a broad incumbent offering overlapping substrates, conjugates and immunoassay kits across a much larger product portfolio.
• Bio-Techne: Large life-sciences tools and reagent company housing the R&D Systems brand, with a deep catalogue of immunoassay reagents, antibodies and substrates. Overlaps with MOSS in core reagent categories but at much greater scale.
• MilliporeSigma (Merck KGaA Life Science): Largest life-science reagents and chemicals supplier. Comparable as a broad incumbent in immunoassay reagents, buffers and substrates with global manufacturing and distribution that competes with MOSS at multiple OEM accounts.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php?id=100095362070052
• LinkedInlinkedin.com/company/moss-biotech-inc

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 MOSS