Blog & Resources · Green Flow

Knowledge that
protects your facility.

Expert articles, case studies, technical guides, and resources on drain hygiene for hotels, hospitals, the food industry, and facility managers.

Hospital drains as a hidden infection source — what HSE IPC programmes overlook

Fifty-eight peer-reviewed studies link floor drains in healthcare facilities to reservoirs of Pseudomonas aeruginosa, Klebsiella pneumoniae, and NDM-producing organisms. What Irish HSE hospitals and EUDAMED-registered procurement teams should look at.

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Green Drain™ Infrastructure Case study Healthcare

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Technique & Specs

May 13, 2026·6 min

Plumbers recommend: a passive seal with a 5-year lifespan.

Drop-in design, no tools, no modifications to the existing installation — what do the experts in the field think about it?

FM & Property

May 10, 2026·8 min

ROI of passive drain seals in IE/UK facilities — with or without trap primers

Most Irish and UK buildings have no trap primer infrastructure. The hidden costs still exist. A 4-step ROI framework for IE/UK FM teams covering both scenarios.

General

April 30, 2026·9 min

Biofilm in Sewers — Why Bleach Isn't the Solution

Chlorine kills surface bacteria in 60 seconds. The biofilm underneath regenerates in a couple of hours. Bio-enzymatic degradation is the answer.

Food industry

April 17, 2026·8 minutes

HACCP and Drains in the Food Industry — A Forgotten CCP

BRC and IFS audits are increasingly requiring a documented drain control plan. What auditors ask and how to respond.

Schools & Daycare Centers

April 3, 2026·7 min

Why do schools smell like sewage on the first day of September?

7 weeks of summer + winter break = every P-trap is dry. Arithmetic that plagues 891 elementary schools and 447 high schools.

Healthcare

March 20, 2026·10 min

EU MDR Class I for Hospital Equipment — What It Means for Procurement

Guide for procurement, MEP designers and facility technical services in Irish HSE hospitals. EUDAMED registration, ISO 13485, HPRA-compatible.

Healthcare

March 5, 2026·12 min

Hospital drains as a source of infections — what IPC programs overlook

58 reviewed studies link drains to reservoirs of Pseudomonas aeruginosa, Klebsiella, and NDM organisms.

Hotels & HoReCa

February 20, 2026·7 min

Seasonal closures of Adriatic hotels — even the empty rooms stink

22.6 million overnight stays in H1 2025. Six months closed = five years of reviews.

Restaurants

February 5, 2026·7 min

Flies in kitchen drains — why chemicals don't solve the problem

DDD interventions are repeated because no one shuts off the source. IPM Tier 1 mechanical barrier.

General

January 15, 2026·8 minutes

What is a P-trap and why does it dry up when the fixture is empty?

A small amount of water that shouldn't be underestimated. 2–3 weeks of inactivity = a smell in the room.

Technical Resources

Documentation
and guides.

SDS sheets, technical specifications, installation guides, and certificates — all in one place.

📄

Green Drain™ — Safety Data Sheet

Complete SDS document in accordance with EU regulations. Chemical composition, safety data, disposal.

📥 PDF · 420 KB

📄

GreenSwirl™ — Safety Data Sheet

SDS for sodium hydrogen sulfate granules. pH ~2, density 2.74 g/cm³, VOC 0%.

📥 PDF · 380 KB

🔬

SGS Laboratory Test — Green Drain™

>99.9% blockage of viral aerosols. Independent testing, methodology, and results.

External link

Installation Guide — Green Drain™

Step-by-step installation for all sizes. 5 seconds, zero maintenance, silicone membrane.

📄 DOC · 1.2 MB

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Certificates & standards

SGS HACCP NSF/ANSI 2 CE cUPC WRAS ISO 9001 More by 7

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