Who owns Colilert?
Colilert is owned by IDEXX (the United States, NASDAQ: IDXX).[1]
Evidence: IDEXX Laboratories, Inc. Annual Report on Form 10-K filed 2026-02-20, SEC EDGAR, 20 February 2026. Verified from filings; last checked .
Key facts
- Current owner
- IDEXX Laboratories, Inc. verified
- Owner HQ
- 🇺🇸 United States, Westbrook, Maine
- Origin
- 🇺🇸 United States
- Category
- Healthcare & pharma › Care providers › Labs & diagnostics
- Parent ticker
- NASDAQ: IDXX
- Last verified
- · 1 sources
About Colilert
Colilert is the water test IDEXX describes as its principal water product, with Colilert-18 and Colisure, detecting total coliforms and E. coli in a sample as indicators of fecal contamination. A nutrient-indicator changes colour or fluorescence when microbes metabolise it, and government laboratories and water utilities use it to meet drinking water standards.
Ownership timeline of Colilert
Where Colilert sits in IDEXX
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full IDEXX ownership tree →
See the full IDEXX brand portfolio (9) →
Other brands owned by IDEXX
IDEXX controls 9 brands on Brandtree, 8 of them in healthcare & pharma.
Also in healthcare & pharma
Other brands in labs & diagnostics, and who owns them
The 13 brands in labs & diagnostics on Brandtree belong to 4 owners. The largest is Quest Diagnostics, with 5; IDEXX has 3.
| Brand | Owner | Owner based in |
|---|---|---|
| AmeriPath | Quest Diagnostics | 🇺🇸 United States |
| Petrifilm | Neogen | 🇺🇸 United States |
| Labcorp | Labcorp | 🇺🇸 United States |
| Dermpath Diagnostics | Quest Diagnostics | 🇺🇸 United States |
| ExamOne | Quest Diagnostics | 🇺🇸 United States |
| Haystack Oncology | Quest Diagnostics | 🇺🇸 United States |
| LifeLabs | Quest Diagnostics | 🇺🇸 United States |
| Reveal | Neogen | 🇺🇸 United States |
About the owner: IDEXX
IDEXX is a publicly listed company headquartered in Westbrook, Maine, United States. Brandtree records 9 brands under its control, and it is listed as NASDAQ: IDXX.
IDEXX Laboratories makes diagnostic tests, analysers and software for veterinarians and pet owners, and water testing products for utilities and laboratories. Its 10-K reports three segments, companion animal diagnostics, water quality and livestock, poultry and dairy, with 2025 revenue of $4.3 billion, most of it from companion animal diagnostics sold to veterinary clinics.
🇺🇸 Colilert and other American brands
Brandtree records a controlling owner for 2,399 brands that began in the United States. 461 of them (19%) are now controlled by a company headquartered in another country; Colilert is not one of them.
Frequently asked questions
Who is the parent company of Colilert?
The parent company of Colilert is IDEXX, a publicly listed company headquartered in the United States.
Is Colilert American?
Yes. Colilert originated in the United States and its owner, IDEXX, is also headquartered in the United States.
Is Colilert still owned by IDEXX?
Yes. As of 14 October 2026, Colilert is still owned by IDEXX. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] IDEXX Laboratories, Inc. Annual Report on Form 10-K filed 2026-02-20 — SEC EDGAR, SEC Form 10-K, published 20 February 2026; retrieved 14 October 2026.
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